Loading up on empty carbs
Researchers have found a connection between acne and diets with a high glycemic load -- in other words, diets packed with refined carbohydrates and sweets such as bread, candy, pasta, soda and juice. These foods cause your blood sugar to spike, unleashing hormones that stimulate oil production and make pore-clogging skin cells shed faster [source: Bowers]. There's also some evidence that high-sugar diets encourage fine lines and premature aging by damaging collagen and elastin, the connective tissues that keep the skin firm and supple [source: Repinksi]. So if you're acne-prone or concerned about wrinkles, consider replacing processed carbs with more protein, vegetables and whole grains, which don't cause a rise in blood sugar.