16. Premature Aging
Wrinkles, sagging, dark spots, and loss of luminescence. Lifestyle-related damage is outpacing your skin’s repair capacity.
The proteins and fats that give skin its youthful appearance (namely collagen and elastin) are highly sensitive to diet and lifestyle factors. Too many oxidizing free radicals (produced by a poor diet, stress, and smoking) can damage skin’s tissues, making skin look old before its time.
Sugar can do an especially nasty number on your skin because it not only drives inflammation and free-radical activity, it also bombards the body’s cells with glycation, a process in which glucose latches onto your skin’s collagen and elastin supply.
This process leads to what are known as “advanced glycation end products” (with the appropriate acronym AGEs), which cause the proteins in skin to become discolored and weak.
Glycation happens both inside and outside the body. This is another way that a poor diet can inflame the entire immune system, with the repercussions in the skin as the most obvious sign.
A certain amount of glycation is the unavoidable by product of eating and being alive, but a high-glycemic, low-nutrition diet amplifies the damage, causing skin to lose its radiance and suppleness far earlier than it otherwise would.
Source : http://selfcarers.com/things-your-skin-says-about-your-health/