Foods with a lot of simple carbs like white bread, white bagels, corn flakes, cooked spaghetti, and even raisins kick your blood sugar up quickly. That triggers your body to make more insulin, a hormone that pumps up the production of oil, which can clog your pores and lead to pimples.
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When you're vegetarian or vegan, your skin tends to be:
More vitamin A in your blood means less of your skin's natural oils, known as sebum. Butternut squash, cantaloupe, carrots, green leafy vegetables, mangoes, pumpkins, and sweet potatoes are rich sources of it.