皮膚科 劉權毅醫師

Acne has historically been associated with diet – but is there any truth to this myth? The frequent consumption of carbohydrates – the "Western diet" – which means a high glycemic index, may repeatedly expose adolescents to acute hyperinsulinemia. Indeed, the absence of acne in natives from Kitava and Papua New Guinea, and the Ache people of Paraguay, has been attributed to their diet, which is substantially based on a lower glycemic index. However, its prevalence can be increased upon adoption of a Western diet. Therefore, this reinforces the idea of a relationship between acne and diet. In his article, Dr Costa describes how the most influential component in this relationship is sebum, the production of which is increased by hyperinsulinemia. He concludes that “it is possible to envisage that foods rich in fatty acids, mainly those rich in omega-3, as well as a diet based on a low glycemic index, can protect sebaceous glands against mechanisms that lead to clinical acne manifestations.”http://www.dermquest.com/Expert_Opinions/Surgery__Cosmetics/Acne_and_diet_Truth_or_myth_.html

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