The effects of vitamin D deficiency and excess sun on health!

The effects of vitamin D deficiency and excess sun on health!

The existence of almost all life on Earth depends on sunlight, and in addition to keeping us warm, there are many advantages associated with exposure to sunlight. But while the ultraviolet rays found in sunlight provide a range of benefits to our well-being, staying too long in the sun sun Without protection it can lead to other problems.

Is there any benefit to extremes and always staying in the shadows? Don't you dare: lack of sunlight prevents the production of vitamin D, which can lead to serious damage to the body and mind.

Discover in the exhibition the effects of the absence of excess sunlight on your health.

©

Stock struggle

the sun

The sun is the star located at the center of the solar system. It is the most important source of energy for life on Earth. This star has an almost complete ball of hot plasma and is 150 million kilometers away from us.

©

Stock struggle

UV

Sunlight reaches Earth in the form of ultraviolet radiation. Sunlight has both positive and negative effects on health.

©

Stock struggle

Vitamin D

Sunlight is the main source of vitamin D. When the skin is exposed to sunlight, it produces vitamin D from cholesterol. This nutrient, known as the sunshine vitamin, has many functions in the body and is essential for health.

©

Stock struggle

Calcium and phosphate levels

Vitamin D helps regulate the amount of calcium and phosphate in the body. These nutrients are essential for maintaining healthy bones and muscles. Vitamin D may also protect against respiratory infections, cognitive decline, dementia, and more.

©

Stock struggle

Boosts mood

Another benefit of exposure to UV rays is improved mood. Sunlight provides warmth and light that encourages an overall feeling of well-being. Sunlight can also stimulate blood circulation, which increases energy levels in the body.

©

Stock struggle

But how long to sunbathe?

Global Health Organization States Exposure to sunlight for 5 to 15 minutes, including on the hands, face, and arms, two to three times a week during the summer months is enough to keep vitamin D levels high.

©

Stock struggle

Sleep-wake cycle

Sun exposure is associated with the timing of melatonin synthesis. Melatonin is the hormone that regulates the cycle Sleeps-The protest. Sunlight is also responsible for maintaining normal, robust circadian rhythms, a natural internal process that regulates the sleep-wake cycle and repeats approximately every 24 hours.

©

Stock struggle

Exposure to sunlight may help prevent obesity

The ultraviolet rays in sunlight not only provide the body with vitamin D, but are also a vital source of nitric oxide, which is essential to the human body as a tool for regulating important physiological processes, including blood circulation and metabolism. Adequate exposure to nitric oxide from the sun will help keep your metabolism running smoothly and discourage you from overeating.

©

Stock struggle

Reducing the risk of seasonal affective disorder

Regular exposure to sunlight may reduce the risk of seasonal affective disorder (SAD).

©

Stock struggle

What is seasonal affective disorder?

SAD is a mood disorder, also known as seasonal depression or “winter depression,” whose symptoms appear in the fall and last until the end of the coldest season of the year. This condition is directly related to decreased sunlight.

©

Stock struggle

“winter depression”

Sometimes called the “winter blues,” SAD has been linked to a biochemical imbalance in the brain caused by fewer daylight hours, which means less sunlight in winter. The symptoms — which include sleeping too much, having little or no energy, and overeating — can be bothersome and interfere with a person's routine. Summer condition may include increased anxiety.

©

Stock struggle

depression

studies He pointed out that women are more susceptible to seasonal affective disorder than men. The average age at which the disorder usually appears is between 18 and 30 years. Interestingly, SAD is almost non-existent in people over 60 years of age.

©

Stock struggle

Treating grief

In the winter, treatments for classic seasonal affective disorder include phototherapy (phototherapy), which involves sitting in front of a specialized box that emits very bright light (and filters out harmful UV rays). In general, 20 minutes or more daily is needed and light exposure is done in the morning.

©

Stock struggle

Health risks of not getting enough sunlight

A lack of sunlight can lead to vitamin D deficiency, which can lead to numerous health problems, including an increased risk of osteoporosis, heart disease, some cancers, infectious diseases, and even the flu, according to news.com. Harvard School of Public Health.

©

Stock struggle

Snow blindness

Sunlight can cause snow blindness or photokeratitis. This is a painful eye condition that results from exposure of eyes that are not well protected to ultraviolet rays from intense sunlight or artificial sources, including the electric arc of a welding tool. The reflection of snow and ice increases the intensity of UV rays.

©

Stock struggle

My heart disease

One seek He pointed out that vitamin D deficiency in men resulting from lack of exposure to sunlight makes them twice as likely to develop heart disease.

©

Stock struggle

Lack of sunlight can harm a baby's vision

Children who spend more time outside reduce their risk of developing myopia (difficulty seeing far away). Myopia develops in young people when the lens no longer compensates for the eye's continued growth. People who are exposed to higher levels of ultraviolet radiation — a factor closely related to time spent outdoors and exposed to sunlight — are less likely to develop this vision problem.

©

Stock struggle

Healthy tan?

Skin tanning process correct? It does not exist, whatever its degree. When you bake on the beach, your skin produces a dark pigment, melanin, as a shield against further damage from UV rays. However, there is no defense against long-term UV damage, which can cause skin cancer. A tan may be aesthetically desirable, but it's actually nothing more than a sign that your skin is damaged and trying to protect itself.

©

Stock struggle

Risks of prolonged exposure to sunlight

It is also important to remember that prolonged exposure to sunlight is associated with many health problems.

© iStock

skin cancer

The rarest and most dangerous type of skin cancer is melanoma. The main cause of melanoma is exposure to ultraviolet radiation in people who have low levels of melanin, the skin pigment. People with a lottags)Family members with a history of melanoma and poor immune function are at greater risk.

©

Stock struggle

Black people

Black-skinned people also need to be careful when exposed to the sun, although their risk of developing skin cancer or non-melanoma skin cancer is lower than that of light-skinned people. Black people can safely tolerate relatively high levels of UV radiation without getting burned. But regardless of skin color, the risk of eye damage and its harmful effects on the immune system remains, he says WHO guidance.

©

Stock struggle

Immunity

One of the most important effects of exposure to sunlight for long periods UV-induced immunosuppressiona defective immune response caused by ultraviolet radiation that first affects the skin and then the entire body.

©

Stock struggle

eye lens darkening

Although cataracts are more common with age, prolonged exposure to sunlight, among other causes, can also cause the lens to cloud, leading to blurred vision and, consequently, decreased ability to see.

©

Stock struggle

Sensitivity to light

A small percentage of the population suffers from a skin condition that makes them particularly sensitive to the sun's ultraviolet rays. Known as photosensitivity, a minimal dose of UV radiation is enough to trigger an allergic reaction that results in a rash or severe sunburn. There is a more general disease Polymorphous light explosiona fairly common rash caused by exposure to sunlight or artificial ultraviolet radiation.

©

Stock struggle

sunstroke

The most obvious result of overexposure to ultraviolet rays from the sun is sunburn. Signs and symptoms include pink or red skin, pain, aching, and itching. Staying in the sun for a long time can also cause swelling and blisters on the skin. Headache, fever, nausea, and fatigue may occur if the sunburn is severe.

©

Stock struggle

Avoid sunburn

Sunscreen and appropriate clothing prevent sunburn and some types of skin cancer. Children are especially vulnerable to sunburn. So, pay close attention to the little ones.

©

Stock struggle

What place receives the least sunlight?

UN climate records show that Torshavn, the Faroe Islands' capital and largest city, receives an annual average of just 840 hours of sunshine per year, making it the darkest or least sunny destination on the planet.

©

Stock struggle

And the sunniest place on earth?

According to the World Meteorological OrganizationYuma (photo), in Arizona (USA), is the sunniest place in the world. The destination enjoys a total of 11 hours of sunlight in winter and up to 13 hours in summer. This means that Yuma is exposed to sunlight at a rate of 4015 hours per year!

©

Stock struggle