Stretch marks are unsightly and hard to erase, but you may be able to blame your DNA. A study in the November/December 2005 Aesthetic Surgery Journal found that women with stretch marks have a pronounced deficiency of total DNA and protein in the skin, and are slower to repair stretch-dependent skin injuries.
When the skin is overstretched in a particular area, the fibers in the elastic middle layer of the skin tear, causing stretch marks to develop. Regardless of your genetic makeup, stretch marks may be preventable. In times of weight fluctuation, keep skin well moisturized with hydrating creams or lotions.
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