Difficult to bask in the sun without a second thought. Yet we do not want to deprive ourselves of such happiness. We feel it well, our body needs its light, its heat. So, what are his real benefits? And how to enjoy it without suffering?
The excesses follow each other and are not the same: in the 1930s, exposure to the sun was supposed to cure all ailments, from tuberculosis to nervous exhaustion. The health commissioner of New York City declared then that it "constitutes the most powerful drug existing in the universe"!
If some doctors quickly warned its worshipers against the risk of premature aging, the appearance of the first sun creams combined exposure and protection without feeling guilty ... It was not until the last fifteen years that the risks of the sun to long term are put forward, leaving even hovering doubt on its benefits. Yet the sun remains a precious ally of our health. Provided you know how to tame it.
It helps us to make an exceptional vitamin
Contrary to belief, vitamin D is not only used to make old bones (even if it controls the absorption and fixation of calcium). In fact, this vitamin behaves like a hormone. The necessary ingredient for the reaction that allows the formation of vitamin D is UV light, which is why the only body organ that can produce it is the skin. The more the sun caresses the skin, the more we produce this amazing vitamin. If researchers are interested in its role on the immune system, mood and prevention of cardiovascular disease, it is its anti-cancer action that is best demonstrated. Many studies point out that the closer we get to the equator, the lower the rates of cancers - including skin cancer - are.
How to benefit from the protective role of this precious vitamin? It is enough to expose oneself to the sun a quarter of an hour a day in summer. In the spring and autumn, you can eat with oily fish, which are full of them. In winter, it is better to take it in capsules and reduce the dairy products (too much calcium decreases the rate of vitamin D in circulation)
It paces our life
Metabolism, body temperature, blood pressure, hormonal secretions are based on the alternation of day and night. Our energy level climbs and falls during each rotation of the Earth. Some people are more sensitive to these fluctuations. Tired - or even depressed - in winter, they are in great shape in the spring and summer. The reason is simple: the light varies certain chemical messengers of the nervous system intervening in all our behaviors.This is confirmed by psychiatrist David Servan-Schreiber in "Curing stress, anxiety and depression without drugs or psychoanalysis" (Robert Laffont): "Light controls most vital instincts, such as the appetite for food and food. sexual appetite, and even the appetite for exploration and novelty. "
In addition, it causes the secretion of melatonin secreted by the pineal gland, which promotes sleep. Released with the darkness, this hormone sees its rate decrease with the arrival of the day. Some animals have a real "third eye", a piece of retinal tissue located between the two eyes and connected to this gland to inform it of the light fluctuations. In humans, it is located deep in the brain. It is connected with the eyes to receive information from light or darkness and retransmit it as a biochemical message that regulates rhythms throughout the body. When we expose our eyes to intense light (rarely achieved by the usual indoor lighting), it stops producing melatonin after half an hour, and we are ready to start our day. A regular walk from the onset of the sun will soon overcome the drops of shape.