Functions of Vitamin A on General Metabolism

This function is apparently closely related to protein metabolism.

Epithelial integrity. Vitamin A deficiency occurs on the structure and function of epithelium disorders, especially those from ectoderm. Skin epithelial thickening and hyperkeratosis occurred. The skin showed xerosis (dry) and the lines of skin picture looks clear. At the mouth of hair occurs follicle palpable lumps hard keratin, giving the impression of a bulge like a frog skin soil (toad skin). This condition is also called phrenoderma or hyperkeratosis follicularis. The surface of the skin is often itchy (pruritus).

Epithelial ducts in the body also showed abnormalities, such as respiratory tract tract, urogenital tract and lymph channels. Epithelial columnar and transitional epithelial metaplasia showed changes, becoming epithelial skwamosa. Occur keratin clumps that can become the center of calcification and saw various calculi (limestone).

Growth. Vitamin A deficiency occurs on growth inhibition. Apparently the basis of this growth inhibition of protein synthesis obstructions. These symptoms appear, especially in children (CHILDREN), who were in a period of unprecedented growth. It seems that protein synthesis requires vitamin A, so that the deficiency of this vitamin occurs barriers protein synthesis which in turn inhibits growth. It has been reported that vitamin A deficiency there is decreased synthesis of RNA, while RNA is an important factor in the process of protein synthesis.

Membrane Permeability. Various experiments in vitro and in vivo studies indicate that vitamin A plays a role in regulating the permeability of cell membranes and membranes of cellular suborganel. Through the cell membrane permeability regulation, regulate vitamin A concentration of nutrients in the cells needed for cellular metabolism.

Growth of Dentistry. Ameloblast an email form is strongly influenced by vitamin A. In conditions of deficiency of vitamin A when going to the teeth being formed, place constraints on the function of ameloblast, enamel forming defected and very sensitive to the influence of factors cryogenic.

Rows of cells induce ameloblast-odontoblast cells to make the dentin. Disturbances in the ameloblast disruption also resulted in odontoblast function, so that also formed hard tissue dentin defected and sensitive to attacks Dental caries.

Production of Steroid Hormones. It is well known that Vitamin A plays a role in the synthesis of steroid hormones. There are a number of steroid hormones concerned with the process of pregnancy and regulation of salt balance and body fluids. Various studies and experiments show that the deficiency of Vitamin A blockage in the synthesis of steroid hormones. 

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Tomatoes Prevent Cancer

Tomatoes and products derived from tomatoes such as marinara and pizza sauce are both good for health, as well as relatively low in fat and calories also has a high nutrient content, including potassium, vitamins A and C.

There is some evidence to support that the spaghetti sauce and other tomato products than offer protection against certain cancers and other conditions of decline. Among other research conducted at Harvard University of Public Health reveals a man who ate tomatoes, 45% less likely to get prostate cancer.

Scientists believe that lycopene content in tomatoes that gives red tomatoes is an antioxidant that much has compared the efficacy of beta-carotene.

As with other antioxidants, lycopene protects the body from free radicals, destructive cells are formed in the body due to pollution, smoking, and ultra violet rays. Lycopene may help of cell damage that can result in cancer and other diseases. Lycopene is also found in fruit / other foods such as red grapes, watermelon and papaya, but tomatoes are still by far the richest source of lycopene.

Amazingly, it turns out that crushed tomatoes or cooked it seemed a better source of lycopene than raw tomatoes. The researchers speculate that cooked tomatoes or lycopene spend more destroyed so easily absorbed by the body, such as spaghetti sauce, pizza, and other foods made from tomatoes that have been processed.

Tomato juice is also good as far as packaged in bottles or cans. As with other nutrients in the carotenoid family, lycopene is fat soluble. That means your body will more easily absorb if you eat tomatoes with a little vegetable oil.