Everyone needs the sun: flowers, animals, and man. How does the sun affect the body and is tan useful?
Under the influence of the sun, the human bodyis able to synthesize vitamin "D". This axiom, probably, everyone remembers from early childhood, because that's when many of us got acquainted with the fish oil that we had to drink if there was not enough of this vitamin. The sun, perhaps, is much more pleasant in this respect.
The lack of sun lowers the body's resistance to diseases, inhibits mental and physical performance, negatively affects tooth enamel and bone strength.
There is a special method of sun treatment - heliotherapy. Infrared rays have a thermal effect, increasing vitality.
Effect of the sun on the body
Solar ultraviolet is able to penetrate the skinto a depth of 1 mm, but this is enough to reduce the viscosity of the blood, reduce cholesterol, prevent atherosclerosis, destroy viruses and bacteria, increase immunity, increase tissue respiration, restore metabolic processes. In addition, the sun helps synthesize protein, enzymes and hormones.
Is sunburn good??
Sunburn itself can not be qualified as a useful or harmful phenomenon for the body. Good for your health the sun. Bronze tan is a natural manifestation of melanin in our skin after a certain time of exposure to direct rays.
On the other hand, if the norms of sun exposure are exceeded, it can become a real danger from an assistant to health. Excessive ultraviolet radiation can cause irreparable harm. And burns and sunstroke - this is not the mostterrible. Much worse is the so-called "deferred consequences", which can manifest themselves years later in the form of serious diseases, for example, malignant tumors.
The norm of the sun, which is beneficial
The World Health Organizationthe norm of a person's daily life under the sun, which is useful for health. This is 60 IEA ("minimal erythematous doses") during the year. That is, under direct rays can be in the beginning of 5-10 minutes, then the time can be brought up to 50 minutes a day.
During holidays or just during the hot months inwe exceed this norm much. Therefore, you need to ensure that the sun does not cause harm to the body, since it can punish violators with serious illnesses.
Is tan useful? If we talk about tanning, which is acquired purposefully, and not a natural consequence of being in the sun, it is best to sunbathe it in the morning for its acquisition. The optimal time is from 8 to 10-11 in the morning. Closer to noon, the sun becomes aggressive, and the air is saturated with water vapor.
You can also sunbathe after 16-17 hours. In between this time, if you decide to stay on the beach, be sure to hide in the shade.
To whom the sun can harm
To the perception of ultraviolet light-skinned women, people suffering from thyroid gland diseases, deficient in iodine, vitamins, and calcium are especially susceptible.
Long exposure to the sun is unacceptable forpeople suffering from acute diseases, bleeding, insufficient blood circulation, bronchial asthma, angina pectoris. In this case it is very easy to provoke skin diseases.
It is forbidden to sunbathe people with neoplasms, not only malignant, but also benign.
People prone to allergic reactions to the sun should avoid being under direct rays. They can be on the beach only in the early morning.
Unthinking ignition can damage the skin, accelerating the processes of its aging, and also contribute to the occurrence of diseases.
How to protect the skin from the sun?
For this, there is a special cosmetics in the form ofsunscreens: creams, lotions, gels. Any anti-tanning cream is characterized by the degree of sunscreen factor, which is indicated on tubes as SPF. The higher its value, the more reliably it will protect the skin from burns and the negative impact of sun's overabundance.
So, is tan useful? I guess, yes. But within reasonable limits and with the right approach to sunbathing.
