Almost all living beings on planet Earth, including humans, need solar energy. People can feel the sun's heat and light on their skin. But from year to year, all scientists talk about an ever-increasing level of radiation coming from the Sun. Let's take a look at the pros and cons of tanning.
The healing power of the sun is known to all. It is easy enough to understand the human longing for the sun. The need for sunlight is laid down genetically, it is absolutely different for different peoples - for the southern peoples it is undoubtedly much higher than for the northern ones. For example, the skin of a southerner who finds himself in the conditions of the Far North experiences severe stress, because the need for solar radiation formed by generations is not satisfied by the stingy northern sun.
Sunlight is involved in the reactions of maintaining the synthesis of insulin (pancreatic hormone), maintains the balance of skin microflora. Well, the positive impact on the human psyche is no longer disputed by doctors. Recall also that under the influence of ultraviolet radiation, vitamin D is produced - an important regulator of calcium-phosphorus metabolism in the body - and serotonin - a substance (it is also called a "chemical binder") that controls impulses between nerve cells the brain, under its "supervision" of which the appetite, sleep, mood and emotions of a person.
With a decrease in the production of serotonin, a depressive mood of the body, an increase in pain sensitivity, insomnia, and migraine attacks are noted. Serotonin is often referred to as the "hormone of happiness" because it is produced in large quantities in moments of joy. Serotonin requires light to produce, and the lack of sunlight during the winter season is the reason why seasonal depression is so common. In addition, excess light inhibits the formation of another hormone - melatonin, which is important in the occurrence of depressive states.
Hardening by sunlight increases the resistance of the child's body to colds, strengthens the immune system, and trains the mechanisms of thermoregulation. But the luminary can also cause serious injuries and even diseases. We will talk about precautions when taking air baths today.
Direct sunlight contains ultraviolet rays. Thanks to their effects, anti-rachitic vitamin D enhances its work. It's also the best natural remedy fight against anemia. The sun dilates blood vessels, increases blood pressure and increases metabolism. In addition, children simply get prettier from sunburn and their mood improves.
However, due to the increased average period of human life compared to the distant past, according to physicians, the benefit of the Sun has become less significant compared to the harm. Over the past three centuries, people began to live about twice as much. In the past, for a short period of life (up to 40 years), the human body did not have time to gain that many mutations, the level of which is life-threatening (Sun radiation is the cause of such mutations). For this reason, skin cancer and other effects of solar radiation were not known in medicine. In addition, very often people modern world live in latitudes for which their genotype is not adapted, they travel a lot and the sun of far latitudes is very sensitive for travelers. Stefan Ruppert, MD, cites the example that Australian Aborigines do not have skin cancer, and white people living in Australia have the highest rate of cancer on the planet.
Scientists have counted more than two dozen different diseases that occur or are aggravated by the action of sunlight, among them xeroderma pigmentosa, squamous cell skin cancer, basalioma, melanoma, cataracts.
The best-known effect of excessive exposure to the sun is erythema, red or tanned skin. A further, less obvious adaptive effect is the thickening of the outermost layers of the skin, which reduces UV radiation penetration to the deeper layers of the skin. All of these changes are a sign of skin damage.
Frequent exposure of the skin to UV radiation also causes many degenerative changes in the cells, fibrous tissue and blood vessels of the skin. They include freckles, nevi and lentigines, which are pigmented areas on the skin that spread brown pigmentation. UV radiation accelerates skin aging, and the gradual loss of skin elasticity leads to dry, rough skin and wrinkles.
Non-melanoma skin cancers include basal cell carcinoma and squamous cell carcinoma. These carcinomas are only rarely fatal, but are painful and surgical removal does not add to their appeal.
Malignant melanoma, although much less common than non-melanoma skin cancers, is the leading cause of death from skin cancer.
A large number of studies indicate that there is a link between genetic and personal characteristics, UV radiation and malignant melanoma.
The main risk factors for humans:
A large number of atypical moles (birthmarks) is the strongest risk factor for malignant melanoma for fair-skinned people;
Malignant melanoma is more common in people with a pale complexion, blue eyes, and red or blond hair;
High, intermittent levels of solar ultraviolet radiation are a significant risk factor for the development of malignant melanoma;
The prevalence of malignant melanoma among light-skinned races increases with a decrease in the geographical latitude of the place of residence;
Some epidemiological studies support an association with sunburn, especially sunburn at an early age.
The sun also affects vision. The eye is protected by the eyebrow protrusion, eyebrows and eyelashes. Bright light activates pupil constriction to minimize the penetration of the sun's rays into the eye. However, the effectiveness of this natural defense against UV radiation is limited. For example, in some situations, such as using a sun lounger or strong reflection from sand, water and snow.
Acute cases of UV exposure are photokeratitis and photoconjunctivitis. These inflammatory reactions, comparable to sunburn in the very sensitive skin-like tissues of the eyeball and eyelids, usually appear within a few hours of sun exposure. They can be very painful, but are reversible and do not result in any fatal damage to the eyes or vision. Extreme forms of photokeratitis are "bunnies" and "snow blindness".
Cataract is the main cause of blindness. Even though most people develop cataracts as they age, solar UV radiation (UV-B rays) is a major risk factor for developing cataracts.
Even coupled with these problems, the benefits of the Sun remain invaluable in supporting and strengthening human health, but you need to use the sun's rays very carefully.
To prevent skin diseases, in the occurrence and development of which exposure to sunlight plays a decisive role, it is first necessary to exclude or limit the time of exposure to UVA and UVB radiation on a person.
Doctors recommend sunbathing for healthy people in doses in the morning (before 11 o'clock) and evening (after 16 o'clock) time. Depending on the skin phototype, the time spent in the sun begins to increase daily from the minimum (several minutes) to several tens of minutes as a persistent tan appears. When in the sun, be sure to use a hat, sunglasses and cosmetics that have both UVB and UVA protective filters. It is necessary to protect yourself from the sun not only when you are in the southern latitudes or high in the mountains, but also in the spring and summer middle lane. It is necessary to avoid even superficial sunburn and direct exposure to ultraviolet radiation on nevi and birthmarks. In the daytime, it is safer to be in the shade, eliminating direct sunlight on unprotected skin. It should be remembered that being in the water, on the sand, active games and sports reduce the protective properties of sunscreen, which requires more frequent application.
A series of sunscreens must be adapted to each skin type, each phototype.
The Fitzpatrick scale provides for six phototypes. We will not consider the last two, since their representatives mainly live in Africa and other hot countries. And among us Europeans, only the first four phototypes are found.
- I type: very light sensitive skin, blue or green eyes, blond or red hair, freckles. Such skin is contraindicated in direct sunlight, as it instantly burns. For protection, you should use the most powerful sunscreens marked "for sensitive skin": in the first days of sun exposure SPF 40, then - SPF 30. Oil for intense tanning is contraindicated!
- II type: fair skin, blue or brown eyes, blond or red hair, freckles. The skin of this phototype can tan, but in order not to get burned, it must be gradually accustomed to the sun's rays. On the beach, it is better to use waterproof products: the first days - SPF 30, later - SPF 15.
- III type: fairly fair skin, dark eyes, brown or blond hair. This is the most common phototype in our country. Its representatives tan easily and quickly, often bypassing the unpleasant stage of skin redness. Such skin is not afraid of the mid-latitude sun, but the scorching southern heat is dangerous for it. The first days in the sun you need to use products with a protection factor of at least SPF 15, in the future - SPF 8-10.
- IV type: dark skin, black hair, dark brown eyes, no freckles. Representatives of this phototype tan quickly and easily, never burning in the sun. And although such skin does not give owners the trouble associated with sunburn, it still needs to be protected from photoaging with products marked “for dark skin”, which will moisturize and make it even more beautiful. Even if the skin does not clearly protest against long exposure to the sun, it is advisable to use SPF 6-8 sunscreens to protect against photoaging.
Sun exposure is contraindicated for patients suffering from photodermatosis, who have or have had malignant skin tumors or precancerous dermatoses in the past. Of the photoprotective cosmetics, they are recommended special creams with the highest degree of protection, which must be applied daily in the spring and summer to open areas of the skin every time they appear in the sun. It is recommended that such patients visit a dermato-oncologist for a preventive examination at least once a year.
If you are nevertheless burned, the skin turns red, becomes hot, it hurts to touch it, immediately take the necessary measures. The main thing - do not lubricate it vegetable oil and creams with a greasy base, as they make it difficult to release heat. The task is to help the burnt area to relieve heat. There are many ways.
Your actions
Method 1. Cool sun-damaged skin for five to ten minutes (or longer if needed) with ice cubes wrapped in a clean cloth. Until the pain subsides, American doctors recommend applying a package of frozen vegetables wrapped in a towel to the burnt body.
Method 2. Moisten a bandage (gauze) folded in four to six layers cold water or regular milk from the refrigerator and apply a compress to the burned area. After that, wash off the traces of milk with a cotton swab dipped in cool water. Repeat the procedure every two to four hours throughout the day.
Method 3. Another effective remedy is an oatmeal compress, which is used in the same way as a milk compress. Spread dry oats in a layer of one or two centimeters on a piece of clean cloth, wrap the ends, covering it completely, moisten with cool water, let it drain and apply a compress to the affected skin.
Method 4. ethnoscience advises covering damaged areas with fresh leaves white cabbage, thinly sliced raw cucumber, potato or apple.
Method 5. For the next week, take two tablets of tocopherol (vitamin E) three times a day. It will relieve inflammation of the skin resulting from a burn.
Method 6. Avoid soaps, colognes, and perfumes that irritate your skin until discomfort subsides. Make sure that the water pressure in the shower is weak - there is no need to injure the affected skin once again! For the same reason, forget about the jacuzzi for a while.
Keep your skin out of the sun and drink plenty of fluids until the burns are completely healed. Green tea is especially beneficial.
The desire of some people to tan faster and stronger is so great that they sometimes do not take into account that the body cannot instantly adapt to sudden changes in environmental temperature. Excessive exposure to the sun, especially in calm weather with high humidity, can lead to overheating of the body. As a result of an imbalance between the amount of heat received by the body from the outside and its return to the external environment, heat or sunstroke occurs.
The first symptoms sunstroke malaise, weakness, a feeling of weakness and fatigue usually serve. Gradually appear dizziness, headache. Often, sunstroke is accompanied by an increase in body temperature up to 39-40 degrees, nausea and vomiting. In a person who has suffered from sunstroke, there is a sharp staining of the skin in a bright pink color, sweating increases. In especially severe conditions, the development of fainting and even convulsive states is possible. Nosebleeds and tinnitus can also be integral part sunstroke clinics.
To provide first aid, the victim must be moved to a shady cool place. The patient should take a horizontal position with legs raised up. After that, you should unfasten your clothes and open the windows if help is provided in the room. The supply of fresh air is an integral part of measures to improve the condition of patients with sunstroke. To cool the skin, you can attach a piece of cloth moistened with cold water. In parallel with this, rehydration therapy is being carried out - the patient should receive the optimal amount of fluid, it is better to give mineral or ordinary drinking water. When consciousness is clouded, inhalation of ammonia has a good effect. You can bring a cotton swab moistened with ammonia to the patient's nose or wipe his temples with it.
Doctors do not advise the use of antipyretic drugs. In case of sunstroke, it is better to wipe the palms and feet of the victim with a solution of vinegar diluted half with water.
Symptoms heat stroke in many ways similar to those of a sunstroke. Heat stroke is also accompanied by tachycardia (the pulse rises to 120-150 beats per minute), changes in nervous system(delusions and hallucinations may appear).
First aid for heat stroke is no different from first aid for sunstroke.
Heat stroke and sunstroke usually go away on their own within a day to a week and rarely lead to serious consequences. However, it is better to carry out the prevention of these conditions than to seek help later.
And to protect yourself from heat and sunstroke, avoid prolonged exposure to the sun, on the beach. Sunbathing is better not lying down, but in motion, taking sunbaths in the morning and evening hours and not earlier than an hour after eating. It is useful to combine them with swimming. Protect your head with a light, light-colored hat, and your eyes with dark glasses. Wear light, light-colored clothing that does not prevent sweat from evaporating. In hot weather, do not eat too much and do not drink too much liquid. Give preference fermented milk products and vegetables.
And in conclusion, a few words about what worries mothers and grandmothers so much: is it possible for a child to sunbathe? Pediatricians categorically forbid children under three years of age to be in direct sunlight. It has been scientifically proven that burns received in childhood increase the risk of developing malignant skin tumors several times in the future. To avoid the damaging effects of aggressive sunlight on delicate children's skin, parents should take care of their beloved offspring in advance: buy a special protective children's cream with SPF 30. It must be applied to the child's skin before each walk. But even then, the baby's skin cannot be considered completely protected. Therefore, walking with a child in the summer is possible only in the shade, where ultraviolet radiation is 20% less than in the sun.
Of course, a tanned body color is beautiful and sexy, but we should not forget that the summer sun can be not only gentle, but also ruthless. Caution and attentiveness will allow you to fully enjoy the beneficial effects of sunbathing, get a beautiful tan without any unpleasant surprises and disappointments.
The question of how the sun is useful and how it affects the human body was asked in antiquity. The ancient sages already understood that fresh air and sunbathing help to quickly heal wounds and relieve many external and internal health problems.
Today, the influence of UV rays is well studied, and, therefore, to extract maximum benefit from sunbathing is really possible.
Health Benefits of the Sun
Solar radiation that reaches the earth's surface is divided into ultraviolet A and B. Ultraviolet C is the most dangerous, it is delayed by the ozone layer of the atmosphere. UVA and UVB stimulate the production of specific substances in human skin. This is the reason for the positive influence of the sun.
Benefits of contacting UV rays with human skin:
- stimulation of the production of vitamin D, which is involved in the processes of calcium metabolism, protects against malignant neoplasms and strengthens the immune system;
- decrease in moderate sun exposure blood pressure, normalization of heart rate;
- increasing the functioning of the immune system due to the production of antibodies;
- healing of wounds on the skin, improvement in dermatitis, psoriasis, acne and acne;
- increase in metabolic processes and activation of cellular respiration.
The sun directly affects the mood and general emotional state of a person. With the first rays of spring, apathy, depressive states disappear in a person, tearfulness and insomnia disappear. This is the merit of the hormone serotonin, which is actively produced under the influence of UV rays. In addition to serotonin, the sun improves the synthesis of sex hormones in women and men, therefore, in the spring and summer, sexual desire is increased, and dyshormonal conditions are temporarily stabilized.
Sunburn is another conditional benefit of the sun, which lies in the beautiful color of the skin. In fact, this is the protection of the body from ultraviolet radiation, but in the light of fashion trends, it acts as a positive point.
The benefits and harms of sun tanning
Under the influence of ultraviolet radiation in the upper layer of the skin - the epidermis, the substance melanin is formed. It is synthesized by special cells - melanocytes. It is enough for the rays of the sun to touch the skin of a person for only 5 minutes to start the production of melanin and vitamin D. The intensity of their formation depends on the type of skin and the time spent outdoors. If you regularly take sunbathing, the tan lasts throughout the warm season. In winter, melanin is partially destroyed and removed from the cells. Vitamin D is also gone.
But besides the benefits, there is also harm:
- the rate of photoaging of the skin increases (dryness of the epidermis, deepening of wrinkles, including mimic ones);
- increases the risk of developing skin cancer and its most complex form - melanoma;
- the likelihood of allergies with prolonged exposure to the sun;
- worsening of the course of some chronic skin diseases;
- the appearance of age spots, white spots.
Sunburn is especially harmful to people with fair skin and hair, children and nursing mothers. They have an increased sensitivity to ultraviolet radiation, and the protection processes, that is, the production of melanin, are not intense. Therefore, staying in UV rays for more than 20-30 minutes leads to a burn.
How to sunbathe
Due to the frequency of developing skin cancers, doctors have created a list of recommendations for sunbathing. Their main rule is moderation and protection. How long to bathe in UV rays, at what time and what protection to use depends on the skin type and region. The closer the region is to the equator, the more intense the solar radiation and the higher the risk of burns.
What is the best time to sunbathe
Ultraviolet radiation peaks from 12 noon to 4 pm. The rest of the day is relatively safe. This does not mean that you can only go out and sunbathe in the morning and evening. On vacation at sea, such a regime is difficult to observe. Therefore, it is permissible to actively sunbathe from 8.00 to 11.00 or from 17.00 to 20.00. The rest of the time you can sit under an umbrella, on a covered terrace, under a canopy so that direct sunlight does not touch your skin.
Advice! During active sunbathing, it is recommended to wear a hat to prevent heat stroke and protect hair from moisture loss.
The first days by the sea choose places further from the water's edge, since the surface of the sea has a reflective ability, which means that the risk of burns increases significantly. Also, you can not sunbathe immediately after leaving the water, you must definitely dry the body with a towel.
How long can you sunbathe
The lighter the skin, the shorter the sun exposure. Active sunbathing begins with a 15-minute sunbath at the allowed time. At the same time, a protective cream is applied to the skin 30 minutes before going outside. If the skin is white and thin, sunbathe on the first day for 5-10 minutes in the morning and evening.
For 1 week, sunbathing time is adjusted to 30-40 minutes, for people with active melanin production, this time is increased to 1 hour. If you use a protective cream with a protection level of more than 30, even 2 hours in the sun will not harm your health, but only with preliminary preparation of the skin.
Is it possible for pregnant and lactating women to sunbathe in the sun
Ultraviolet penetrates the skin only 15 mm. That is, other tissues and organs do not feel its direct impact. This means that sunburn is absolutely safe for the fetus, but not always for a pregnant woman. The point is the increased sensitivity of the body of a pregnant woman to any external influences, including sunlight. In combination with a special hormonal status, a woman has an increased risk of age spots on her face and body.
Other negative sunburn factors:
- increased blood pressure;
- increased blood flow;
- allergy.
Not everyone has such a reaction, but in order not to fall into the risk group, it is better to limit the time of sunbathing to the recommended ones.
sun for children
Ultraviolet for children is a good doctor. The baby can be healed with simple sunbathing combined with clean sea air. This will increase his defenses for many months, strengthen his bones and improve his condition with atopic dermatitis. The body of a child reacts brighter to ultraviolet than an adult. All metabolic processes are accelerated, vitamin D is actively produced and calcium is absorbed, blood pressure rises and blood vessels dilate.
Some rules for sun exposure with children:
- children under 2 years old can only be under direct rays for 10 minutes a day;
- children from 3 years of age increase the stay to 30 minutes, but with a covered head and shoulders;
- a ban on walking at temperatures above 25 ° C;
- to avoid rapid loss of moisture observe the drinking regimen. Drink often, but little by little.
The sun's rays for children are useful only in moderation. Any burn is fraught with an increase in pigmentation in the future and the development of an allergy to UV. If the family leaves, in 2 weeks they begin to prepare the child for active exposure to the sun. To do this, they walk every day 2 times in the morning and in the evening, in hot and sunny weather they lubricate the body with a special cream. They teach the child to wear a hat, preferably a panama hat with fields that will protect the face, neck and hair.
How to protect your skin and hair from the sun
With prolonged exposure to ultraviolet radiation, protection and hydration are important. If the body is more often covered with clothes, then the face, hands and hair are almost always open. These areas need to be looked after more carefully. Headgear - the first and most effective remedy protection. This is a cap or a hat with a brim, or panama mostly white color. The hair and skin of the face are well protected in this case.
If the headgear is inappropriate, you must:
- in the morning, lubricate the skin of the face and neck with a moisturizing cream, and 20-30 minutes before going outside, apply a sunscreen spray or cream with SPF 15 or higher;
- collect hair in a light hairstyle. Tight and complex hairstyles with varnish and other styling products increase hair brittleness, and in summer they lose a lot of moisture and often fall out;
- in the evening after a shower, make moisturizing and caring facial and hair masks from natural homemade ingredients 2-3 times a week.
While relaxing at sea, in order to protect your face from the sun, you can not use alcohol-containing lotions. They increase sensitivity to ultraviolet radiation and provoke skin pigmentation.
How to choose sunscreen
It all depends on the time spent in the sun, skin type and reaction to ultraviolet radiation. The darker the skin, the less protection in the form of a cream is needed. So blacks do not need it at all.
The essence of any protective equipment is the reflection of sunlight and the adsorption of ultraviolet radiation. The degree of protection shows how long a person can conditionally stay in the sun without a threat to the skin. To calculate this time you need:
- determine how many minutes of exposure to the sun the skin turns red without protection;
- multiply this time in minutes by the number of SPF;
- so, if the skin is redder in 5 minutes, and a cream with a degree of 10 is chosen, then you can stay in the sun for 50 minutes (5 × 10).
These are conditional calculations, since individual characteristics are not taken into account. And these include age and skin condition. So up to 35 years old, the skin can independently cope with moderate UV radiation, and if the UV index does not exceed 3, then on this day you can not use the cream at all. The value of the UV index can be viewed in the weather forecasts of your region. To protect the child from the sun, use creams with an SPF of 30-50.
The benefits and harms of sunscreen
The action of any sunscreen or spray is based on the work of the filters contained in it. Their role is played by substances such as benzophenone or titanium dioxide, which, if used frequently, cause allergies or exacerbate skin diseases. Therefore, it is important to choose the remedy that is optimally suited for all indicators from the type and condition of the skin to age and place of residence.
Important! With frequent use, chemical filters accumulate in the upper layers of the skin, and, in addition to allergies or inflammation, provoke cancer.
It is believed that spring tanning is the most aggressive, since the skin after winter is very sensitive to ultraviolet radiation, so the negative consequences of sunbathing in the form of burns or allergies are almost inevitable. In the spring, doctors recommend actively using creams with protection from 15 and above, and in the summer it switches to a lower degree from 2-4 SPF.
If we talk about the benefits, then it consists in reflecting ultraviolet radiation and protecting it from penetrating into the deeper layers of the skin. A burn or pigmentation with the right selection of cream is not dangerous.
Harm of sunlight for humans
In general, the sun is good for health and general well-being. But negative impacts also need to be considered. At risk are people with large moles on the body and those with hormonal imbalances. Under the influence of ultraviolet radiation, processes of cell transformation from normal to malignant can arise in moles. This can be determined by their intensive growth, change in shape, discomfort in the problem area.
The harm of the sun to the skin in people with hormonal disorders is the appearance of large age spots. This indicates a violation of the formation of melanin in the epidermis of different parts of the body. Usually pigmentation affects open areas of the body: face, shoulders, chest. Not everyone develops such a reaction.
Photoaging is another harm that ultraviolet brings. If the skin is not protected, ultraviolet light penetrates deep into the skin, causing water imbalance. From this, the skin tone decreases, it loses moisture, the processes of collagen synthesis are disrupted. From this, a network of wrinkles and noticeable fading of the skin appear on the face and body.
Hypertensive patients and core patients from prolonged exposure to the sun suffer from a hypertensive crisis and tachycardia.
Who should not sunbathe
The list of contraindications for sunbathing can be presented as follows:
- hypertension, poor circulation;
- diseases endocrine system in particular the thyroid gland;
- neurosis;
- varicose veins (legs and other areas are protected by clothing);
- children's age up to 2 years.
Photosensitivity, old age, obesity, skin diseases - a reason to limit the time spent in the sun. Particular care should be taken to protect children from the sun, especially if the child has light color skin and hair.
The benefits of the sun for humans have been confirmed. Not in vain the best treatment from a bad mood and well-being - a resort on the shores of the warm sea. The production of vitamin D and the happiness hormone serotonin are two components of effective recovery.
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The sun can be both a friend and an enemy to us. With a competent approach, it can be used to strengthen your health, increase immunity and improve mood. And, on the contrary, the unreasonable use of its capabilities can cause serious health problems. In this short article, we will consider the positive and negative effects of the Sun on the human body.
Benefits of the sun for human health
Regular sunbathing has a positive effect on our body. They help improve metabolism and blood composition, increase overall tone.
The positive influence of the Sun on the human body was noticed already in ancient times. Sick and weakened people were prescribed outdoor walks and sunbathing. This contributed to the improvement of their health.
It has long been proven that sunlight can kill pathogens of many diseases, including such serious ones as skin tuberculosis. In addition, under the influence of ultraviolet rays in the human body, vitamin D is produced, on which the strength of our bones and teeth depends. With a deficiency of this vitamin in children, rickets occurs.
An overdose of even the most useful medicine is harmful. The same can be said about the sun's rays. Too much sun exposure leads to a lot of unpleasant consequences. This is definitely worth knowing for those who like to sunbathe for hours on the beaches.
Ultraviolet light can have a damaging effect on the skin. Too much sunbathing can cause premature aging of the skin and early appearance of wrinkles. In addition, excessive sun exposure increases the risk of melanoma and other dangerous diseases. In order to avoid these consequences, you should sunbathe between 9 a.m. and 11 a.m. and 4 p.m. to 7 p.m., when UV rays are at their weakest. Going outside, be sure to use protective products for the skin and hair to reduce Negative influence sun on the human body.
It is necessary to protect not only the head and body, but also the eyes, since ultraviolet destroys the retina. To avoid this, you should wear sunglasses. Their choice should be approached very responsibly. Poor quality glasses can only increase the destructive power of UV rays. So you should buy this important accessory only in opticians, and not in underground passages and other dubious places.
Sunlight, air and water are necessary for a person, if there were no Sun, then life on Earth would be different!
The benefits of the Sun have been known since ancient times. In ancient Rome, it was believed that being in the sun strengthens the spirit and tempers health. People living in temperate climates note that mood and well-being improves on sunny days and worsens in cloudy autumn.
Experts led by Richard Weller (Edinburgh) found that when a person is in the Sun, blood pressure decreases, blood clots decrease, and therefore the Sun not only improves health, but also prolongs life, and can prevent the occurrence of such serious diseases as stroke and heart attack. The conclusions of the experts are fundamental, since it was previously believed that the benefit of the sun was exclusively in the production of vitamin D.
In the human brain, under the influence of sunlight, there is an increased production of serotonin. This "hormone of happiness" not only improves mood, but also plays an important role in the processes of blood clotting.
Under the action of the sun, vitamin D (calciferol) is produced, which helps to strengthen bone tissue, helps to remove heavy metals from the body, and strengthens the immune system.
Under the influence of the sun's rays, the biologically inert nitrite is released in the body and converted into nitrate and nitric oxide, which lower blood pressure and reduce the likelihood of heart attacks and strokes.
The sun has an antibacterial effect and therefore healing processes occur much faster.
Sunlight Benefits:
The sun actively prolongs the quality of life: experts have recently discovered this unique property of vitamin D. Vitamin D deficiency provokes the development of hypertension and increases the tendency to be overweight.
The sun heals skin diseases: the condition of patients with skin diseases improves significantly in summer, various inflammations on the skin disappear. Ultraviolet rays have a bactericidal effect and kill bacteria.
The sun improves mood: the rays of the sun stimulate the production of serotonin and endorphins in the body. Endorphins are called the "hormone of joy and happiness" - they improve mood and increase tone. Studies have shown that residents of northern countries are more likely to suffer from depression than southerners. This is due to the lack of sunlight. Sun deficiency reduces mental and physical performance at times. Serotonin is also called the "hormone of joy".
The sun lowers blood pressure levels: Edinburgh experts claim that the sun lowers blood pressure levels and reduces the risk of blood clots.
Under the influence of sunlight human body the release of nitric oxide begins and its conversion into nitric oxide and nitrate, and these substances reduce pressure and prevent thrombosis.
The sun prevents the occurrence of sclerosis: scientists have proven the beneficial effects of sunlight. If a person in childhood was not deprived of sunbathing, then in adulthood he has a lower risk of developing multiple sclerosis than in children who grew up in conditions of sun deficiency.
The sun helps to lose weight: if you are in the sun in the morning, it is easier to fight excess weight and it is easier to maintain normal weight all the time without much effort.
Products that help you get a beautiful tan:
Beta-carotene - a pigment that helps protect the skin from ultraviolet radiation and, consequently, burns, an antioxidant, found in red, yellow products of plant origin;
Tocopherol - vitamin E, prevents the removal of moisture from the surface of the skin, and as a result - aging, the main content in vegetable oils;
Selenium is a chemical element that strengthens immune system, found in large quantities in seafood (squid, sea kale), in cabbage, garlic;
Lycopene is a pigment that promotes an even tan, found in red fruits.
You will be surprised, but this world was created for joy and pleasure!
In childhood, everyone dreams of miracles and pleasant surprises, and many do not lose hope for miracles when they become adults.
Why is this happening?
The fact is that our consciousness is very similar to a computer. And the speed and efficiency of performing vital tasks depends on how many virus files got into our consciousness. A dream can be very close, but a little effort is not enough to make it come true. This effort is hindered by various limiting beliefs, false stereotypes, and misconceptions about what is good for us and what is bad for us.
Such virus files enter our consciousness in early childhood when we have unlimited trust in the people around us and cannot critically perceive the information that we hear from the most significant people - dad, mom, grandparents. We can live with these files all our lives and never know about their destructive influence. We can strive for happiness, but never achieve it.
All living organisms that exist on our planet, almost completely owe this to the sun. Largely thanks to the sun, the world around us was formed in such a form in which we can observe it, perhaps life on the planet would not have originated at all, or had a completely different appearance if it were otherwise located in outer space relative to the sun. The sun plays a very important role in the development and existence of all forms of life living on the planet, almost all of its inhabitants love its light and warmth, which it generously shares for millions of years, since life originated on the planet. The sun is vital for all plants, animals and other inhabitants of our world, including people.
Most people love spending time under the sun. Many are looking forward to summer, some are ready to fly to hot countries in winter just to soak up the beach under the warm sun. In gray cloudy weather, many note a breakdown, a decrease in mood and vitality, they don’t want to do anything, they don’t want to go anywhere, but when bright sunny days come, we seem to wake up from hibernation, we are drawn like a magnet to the street, to sit under its rays , take a sunbath, lie on the beach or go and have a picnic in nature. All these changes in mood occur at a subconscious level, since it has been proven that under the influence of the sun, a substance is produced in the human brain - serotonin, which is also called the "hormone of happiness", and our brain strives to get its dose as soon as possible, such a reaction can be caused not only sunlight, but also many other factors, for example, delicious food, we are drawn to try some kind of yummy, because it is tasty and pleasant, and our brain remembers it.
The hormone of happiness improves our mood, gives us strength, puts us in a state of euphoria for a while, but this can also be dangerous, since many can lose their measure and stay in the sun longer than they really need to.
In moderate doses, the sun helps a person, under its rays, the body produces a very important vitamin D, which strengthens bones, promotes the absorption of many minerals and strengthens the immune system. Ultraviolet (UV) radiation, in small doses, can also be useful, it has an antibacterial effect, has a beneficial effect on skin health, acne disappears, wounds heal, blood vessels expand, blood circulation improves, the skin becomes healthier and more elastic.
: the harm of sunburn
However, all the benefits of the sun can at one moment turn against a person, and from a friend it turns into a pest for our body, this usually happens when nailing in the sun for too long, because a tan is nothing more than defensive reaction body to UV radiation and the first signs of sun damage are usually on the skin. Often, the day after a day at the beach, the skin starts to hurt, redness and burning appear, then it begins to peel off, which means that you have received a sunburn. You should find out what phototype your skin has (there are 5 in total), how it perceives UV radiation directly depends on this, the sun is most dangerous for people with skin phototypes 1 and 2, their owners usually have light skin, light eyes and hair (often red), freckles are often present. For them, exposure to the sun has a particular risk, since people with such skin are most susceptible to formation melanoma, a disease known as skin cancer. In addition, prolonged exposure to ultraviolet radiation dries the skin and contributes to its premature aging, destroys proteins and other beneficial substances.
: sunstroke
The harm of the sun can be not only for the skin, but also for the brain, if you stay under the scorching sun with your head uncovered for a long time, you can get sunstroke, it can be very dangerous for both children and adults. It can be of varying severity. In people who have received sunstroke, the temperature rises, sometimes up to 40-41 degrees, nausea, increased heart rate and heartbeat, headache, there may be loss of consciousness, etc., with a severe degree of headstroke, even death is possible.
: precautionary measures
Of course, the sun is far from harmless, but if you protect yourself, you can completely avoid all the negative effects from the sun. It should be remembered that if you are going to spend a day under the sun in hot weather, then you definitely need to have a hat with you, if you sunbathe for a long time on the beach, then use special tanning products, if possible it is better to have something protecting from the sun, for example umbrella. If you go in for sports in the heat, or any other physical activity Be sure to drink plenty of fluids to avoid heat stroke. Another important accessory is sunglasses, they are no less important, because looking at the sun with unprotected eyes is also very harmful. In any case, in the summer, nothing will prevent us from enjoying the warmth of the sun's rays, and if we do not abuse its kindness, then it will give us a lot of health and joy.
