White spots on nails sign calcium deficiency

False.
This is the manifestation of no lack, only a small bug without gravity in the growth of the nail. "The keratin grows in lamellae that attach to each other, and if some are less tight or relax slightly, it shows in the form of a white spot," says Gerard Lorette, dermatologist at CHU Tours. On the other hand, the appearance of the nail speaks volumes about our health: "A nail that is rough or has tiny cells, like a thimble, can be a sign of alopecia areata, eczema or psoriasis", Professor Lorette warns - with the originality of often wearing the stigmata eight to ten months before the manifestation of the disease. And a fingernail with a horizontal furrow (relative to the lunula) reveals past stress, which has disrupted growth. If you are short on vitamin C, the nail becomes concave instead of convex.

To relieve a burn, apply butter, toothpaste or potato

False.
It's even criminal! Not only does this stop the burn, which continues to deepen, but it may infect the injured skin, or even abrade a little more. "The first reflex is to place the affected area 15 minutes under cold water to stop the burning process. Then we apply grease tulle or a suitable gel, but nothing else, "insists Professor Daniel Wassermann, head of the burns department at Cochin Hospital. If the surface of the burn exceeds half of the palm of the hand and if the skin blisters or is raw (2nd degree burn), consult without delay. Namely: a very serious burn, including the 3rd degree, can be painless, because the nerve endings are destroyed.

One does not spoil one's eyes when one reads or writes in the dim light.

True.
The discomfort felt just corresponds to a temporary visual fatigue, due to the additional effort of accommodation of the crystalline lens and the more sustained work of the muscles controlling the eye movements, to ensure a clear and raised view. We see double or turbid, but the physiology of the lens, retina and muscles remains unscathed.

It is good to stop the pill from time to time to rest the body.

False.
The pill does not get intoxicated, the breaks are useless. "Studies have shown that it protects against endometriosis (a condition affecting the endometrium of the uterus) and ovarian cysts," says Dr. Sophie Silcret-Grieu, immuno-allergist and co-author of "Dr. I was told that ... "(Flammarion ed.) As for the risks of which the pill is accused, the World Health Organization (WHO) and the French gynecologists affirm in concert: "The carcinogenic risks of the pills, certainly real but rather weak, must be weighed against the advantages. Conclusion: for most women, the health benefits clearly outweigh the risks. "

You should avoid moving and lying down when you have back pain.

False.
It is the opposite: it is advisable to continue its activities, even to get rid of the lumbar belt, because the prolonged rest promotes muscle wasting.

Cholesterol is vital.

True.
It contributes to the construction and maintenance of cell walls, as well as the synthesis of many hormones, including sexual hormones, and vitamin D. Finally, it participates in the production of bile acids that are involved in digestion fats.

Women who live or work together have synchronized rules.

False.
It would confuse us with the animal kingdom, for which it is true. However, the influence does not come from the life in community: "It is the sunshine and the outside temperature which play on the hormonal secretions of the females. Sharing the same living conditions, they have their heat at the same time, "says Dr. Silcret-Grieu. Women have totally independent cycles.