But marketers have already accustomed all people, including Russians, that for the general strengthening of health and skin rejuvenation you need to consume vitamins and nutritional supplements with collagen. In Japan and South Korea, bottles with collagen are sold even in street vending machines. Meanwhile, scientists to such drugs are skeptical. Dr.-dermatologist Whitney Bowe of New York University in her writings states that the action of collagen, when administered orally, in the human body is very limited. Getting into the aggressive acid-alkaline environment of the stomach, this substance is partially destroyed and does not fully penetrate the skin cells and joints. But much worse, synthesized collagen can harm. In food additives, it is not only of animal origin, but also created from seafood. Its structured compound is much more effective in human cells, but it can cause side effects.

In Germany, the International Commission on the Ethics of Freiburg (FEKI) conducted a clinical study of the effect of collagen on 114 healthy women aged 45 to 65 years. For the reception, collagen from the pig, collagen from seaweed, shellfish and skin of fish and powder-placebo. Groups of volunteers did not know who and what exactly took the drugs that they used for 8 weeks. Test areas were areas of wrinkles around the eyes and forearms. For the analysis, wrinkle measurement and corn biopsy. After only 2 weeks of admission, 17% of volunteers taking collagen from pigs and 39% of women who consumed seafood collagen were found to have allergic reactions. 6 of them even had to stop their participation in testing because they needed medical help! In addition to edema, including Quincke's reaction, 2 women had serious heart failure. Well, as a result of the study, there were very minor changes (slightly more than 2%) in the condition of the skin around the eyes and callus of the forearms compared to the data of women taking placebo.

Collagen for injections under the skin Studies of reactions to collagen in solutions that are administered inside and under the skin, there are not so many, and they are all commercial, ordered by cosmetology firms. These injections are considered harmless, but have a short-term cosmetic effect - no more than 3 months. Among the side effect of the experts called small swelling and bruising. However, the doctors of the University ophthalmologic clinic of the city of McBurg, Germany, in their annual reports indicate that among their patients about 10% are those who were hospitalized in the clinic just after the "pricks of beauty". The diagnosis in such patients is always associated with a skin-contaminated infection, which eventually affected the eyelids and the eyes themselves. And for the treatment and the subsequent recovery of vision in patients took years, which often were paid not by insurance companies, but by personal means.

More recently, the American magazine "LiveScience" published an article in which ophthalmologist Michelle Carl from Los Angeles and her colleagues from Retina's network of medical clinics Vitruous Associated told about cases of vision loss in several women and one man after their calls to cosmetology salons. All of them were injected with biogel from bovine collagen to the forehead region. After that, they were forced to turn to ophthalmologists.

In each of the patients there was an acute violation of the blood supply to the eye fundus of one or even both eyes. After the collagen injection near the hair growth line, the man was subsequently diagnosed with a violation of the patency of the blood vessels, which led to a partial cessation of the blood supply to the retina of the left eye. Completely restore the eyes of their patients to American ophthalmologists and failed.

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