Vitamin D is one of the fat-soluble vitamins and is also called the sunshine vitamin, as the body manufactures it when exposed to ultraviolet rays of the sun, and sunlight is the most important factor in the manufacture of vitamin D in the body through the skin.
Dr. Olesya Savelyeva revealed that rapid fatigue and brittle nails indicate a lack of vitamin D in the body.
She pointed out that vitamin D contributes to many important processes taking place in the body, and is responsible for mood stability and good health.
She explained: “Vitamin D is an essential fat-soluble secosteroid (chemical compound) that can be produced in the body when exposed to sunlight or with foods. This vitamin is responsible for regulating the metabolism of minerals in the body and supporting the immune system, and is necessary for the growth and health of bones and the functioning of the heart. And blood vessels and to reduce inflammation as well as for the functioning of the thyroid gland and normal blood clotting.It also provides mood stability and a good state of health, “according to Russia Today.
She added: “Fatigue, depression, a weak immune system, weight gain, brittle nails and hair, excessive sweating, muscle weakness, sleep disturbances, rapid fatigue and mood swings are all signs indicating a lack of vitamin D in the body.”
And the doctor indicated that the body gets vitamin D with the foods and supplements that the person eats. The body also produces it when exposed to sunlight, as 15-30 minutes are sufficient to produce the body’s daily need of it.
Sources of Vitamin D
And she adds, “The most important sources of vitamin D are dairy products, mushrooms, fatty fish, and egg yolks. When you need to compensate for its deficiency, you must first consult a doctor who determines the appropriate dose of it.”