Processed foods
A recent study, conducted by the US Colorado State University, indicated that refined carbohydrates and highly processed foods, like white bread, pizza, cake and pastries, cause a series of reactions in the body that increases the production of acne-causing bacteria.

The researchers found that these foods cause the body to produce high levels of insulin, which in turn leads to an excess of the male hormones responsible for acne in the body. However, these results need to be verified.

Vitamin A
Vitamin A is an important nutrient in the treatment of acne. This vitamin actually reduces the production of sebum, the fatty substance found in the body's pores, that causes the flare-ups.

But too much vitamin A can be toxic to the body. To prevent the absorption of excessive amounts of vitamin A, the acne sufferer should also include food sources rich in vitamin E. This nutrient helps to regulate the vitamin A levels in the body.

Important food sources of vitamin A include dairy products, green, yellow and orange vegetables and deep yellow and orange fruit. These should be combined with vitamin E rich foods, like poultry, seafood, seeds and nuts, on a daily basis.