Of vitamin "A" comes mainly from food in the form of beta-carotene (or carotenoids), which protects cells from free radicals and other harmful influences that contribute to premature aging of the skin. People with sufficient saturation cells carotene, much longer retain their youth and have a firm and elastic skin.
Signs of deficiency of vitamin "A":
- Fragile and slow-growing nails and hair.
- Dry skin with possible manifestations of rash.
- Decrease or loss of appetite and weight.
- Tendency to frequent infections.
- Fatigue.
- Reduction of dusk.
- Violation of the process of growth during puberty.
- Infertility or insufficient development of the reproductive organs during sexual development.
Ready vitamin "A" found in some foods of animal origin: eggs, fish oil, cheese, butter, whole milk and liver.
In products of vegetable origin contains the vitamin precursor (beta-carotene). The main products with its content - is carrots and dark green foliage vegetables. Also contained in the pumpkin, apricots, peaches, tomatoes, green peas, asparagus.
With clear evidence of a lack of vitamin "A" as soon as possible to begin treatment, because of its accumulation in the body needs some time (up to 5-6 weeks). To carotene concentration in the blood increases, it is recommended consumption of vegetables with fat (small amount) as a fat-soluble vitamin.
Abuse of alcohol, drugs, excessive exercise, stress, gastrointestinal disease - make it difficult absorption of vitamin "A" or significantly increase the need for it.
To make up for the lack of this vitamin, it is necessary to add it in the form of vitamin "A", it will save health of the skin and prolong its beauty. Daily demand for it is 800-1000 mg.