Free radicals are very unstable oxygen molecules that are produced by the body. They are the main cause of diseases and of the aging of living beings. When the amount of free radicals that we produce is higher than the physiological one, our anti oxidizing system can no longer neutralize this excess production, therefore free radicals wreak havoc on healthy cells.
The catechins that are present in Green Tea eliminate free radicals in excess thus restoring the physiological balance. Therefore we can state that Green Tea can slow down the general aging of our body.
Dr Stephen Hsu is a cell biologist at the Medical College of Georgia, Department of Oral Biology; he has gathered information about the characteristics of this plant for years, and has finally discovered that its components called polyphenols help to get rid of free radicals; these molecules can cause alterations of DNA and therefore can cause cancer. In particular, Dr Hsu has concentrated his searches on the EGCG (epigallocatechingallate). He has collected some sample of cheratin (skin) and has compared skin growth on its own with skin growth combined with EGCG. He has discovered that this substance can reactivate dying cells.
Human skin is made up of three layers: epidermis (the external layer), dermis and hypodermis (the internal layer).
When stem cells "migrate" towards the epidermis they lose most of their activeness and energy; indeed, as they continually provide water for the protection of tissues, they slowly die.
Within one month the whole process takes place, with an uninterrupted and virtually boundless cycle of cell regeneration. In this process EGCG plays a crucial role. This polyphenol is able to rejuvenate epidermis cells that are also the most fragile. "When these 'old' cells are exposed to EGCG, they begin to divide again", says Dr Hsu, "They reproduce DNA and energy: in practice they become active again. Much is still unknown, but if we can energize dying cells, probably we will also be able to improve the skin in general".
This discovery could be crucial to treat such skin diseases as psoriasis, ulcers, rosacea, burns or weak skin cells caused by diabetes.