Question

It is widely believed that chocolate causes acne, since people susceptible to acne frequently assert that eating chocolate is invariably followed by an outbreak of the skin condition. However, Donald G. Bruns, in a letter to Science News, wondered whether those who have the belief that chocolate causes acne might not have things backwards. Some studies indicate that hormonal changes associated with stress may cause acne, he notes. Other studies indicate that people fond of chocolate may tend to eat more chocolate when under stress. Given these studies, Bruns comments, it may be easy to confuse which, the chocolate or the acne, is the causeand which is the effect.

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