Does eating simple carbohydrates affects the skin quality ? Will it make skin dark, old, dull, dry, wrinkled, saggy, or cause fine lines or age spots?
Yes, long-term eating of a large amount of simple carbohydrates may affect skin quality.
The effect of sugars on aging skin is governed by the simple act of covalently cross-linking two collagen fibers, which renders both of them incapable of easy repair. Glucose and fructose link the amino acids present in the collagen and elastin that support the dermis, producing advanced glycation end products or "AGEs." This process is accelerated in all body tissues when sugar is elevated and is further stimulated by ultraviolet light in the skin.
Rhytides, sagging of skin, and loss of elasticity are all related to changes in the collagen and elastic fibers of the skin, which are themselves impacted by diet. Ingestion of sugar, in particular, can accelerate these signs of aging...
Foods with a high glycemic index, such as sugar, white bread, and white rice, are rapidly absorbed, leading to higher serum glucose levels and corresponding elevated levels of insulin. Insulin and IGF-1 have been shown to augment sebum production, stimulate adrenal androgen synthesis, and increase androgen bioavailability, all of which play a role in the pathogenesis of acne.