Everyone needs the sun: flowers, animals, and people. How does the sun affect the body and is tan useful?
Under the influence of the sun, the human body is able to synthesize vitamin "D". Everyone probably remembers this axiom from early childhood, because it was then that many of us got acquainted with fish oil, which we had to drink if this vitamin was not enough. The sun is perhaps much nicer in this regard.
Lack of sun reduces the body's resistance to disease, inhibits mental and physical performance, negatively affects tooth enamel and bone strength.
There is a special method of treating the sun - heliotherapy. Infrared rays have a thermal effect, increasing vitality.
The effect of the sun on the body
Solar ultraviolet can penetrate the skin to a depth of 1 mm, but this is enough to reduce blood viscosity, lower cholesterol, prevent atherosclerosis, destroy viruses and bacteria, increase immunity, strengthen tissue respiration, and restore metabolic processes. In addition, the sun helps synthesize protein, enzymes and hormones.
Is tanning good ?
A tan as such cannot be qualified as a beneficial or harmful phenomenon for the body. Healthy for the sun. A bronze tan is a natural manifestation of melanin in our skin after a certain time spent under direct rays.
On the other hand, if the norms of exposure to the sun are exceeded, it can turn from a health assistant into a very real danger. Excessive ultraviolet radiation can cause irreparable harm . Moreover, burns and sunstrokes - this is not the worst. Much worse are the so-called “delayed effects", which can manifest themselves years later in the form of serious diseases, for example, malignant tumors.
Norm of the sun, beneficial
The World Health Organization has set a standard for a person to be in the sun every day, which is good for health. This is 60 MEA ("minimum erythema doses") for a year. That is, under direct rays, you can be at the beginning of 5-10 minutes, then the time can be brought up to 50 minutes per day.
During holidays or just during the hot months in the city, we far exceed this norm. Therefore, you need to ensure that the sun does not harm the body, since it can punish violators with serious diseases.
Is tanning good? If we talk about tanning, which is acquired purposefully, and is not a natural consequence of exposure to the sun, it is best to sunbathe in the morning for its acquisition. The optimal time is from 8 to 10-11 in the morning. Toward noon, the sun becomes aggressive, and the air is saturated with water vapor.
You can also sunbathe after 16-17 hours. Between this time, if you decide to stay on the beach, be sure to hide in the shade.
To whom the sun could harm
Light-skinned women, people suffering from thyroid diseases, experiencing a deficiency of iodine, vitamins, calcium, are especially susceptible to ultraviolet perception.
Long exposure to the sun is unacceptable for people suffering from acute illness, bleeding, poor blood circulation, bronchial asthma, angina pectoris. In this case, it is very easy to provoke skin diseases.
It is forbidden to sunbathe to people with neoplasms, not only malignant, but also benign.
People prone to allergic reactions to the sun should avoid exposure to direct sunlight. They can only be on the beach in the early morning.
Mindless sunbathing can harm the skin, accelerating the aging process, as well as contribute to the onset of diseases.
How to protect the skin from the sun?
For this, there is special cosmetics in the form of sunscreens: creams, lotions, gels. Any anti-tanning cream is characterized by the degree of sun protection factor, which is indicated on the tubes as SPF. The higher its indicator, the more reliably it will protect the skin from burns and the negative effects of an excess of sun.
So, is tan useful? I guess, yes. But within reasonable limits and with the right approach to sunbathing.