Acne occurs most commonly during adolescence. It is affecting an estimated 80–90% of teenagers in the Western world. Lower rates are reported in some rural societies. Though it becomes less common in adulthood than in adolescence, nearly half of people in their twenties and thirties continue to have acne. About 4% continue to have difficulties into their forties.
There is some low-quality evidence from single trials that LGLD, tea tree oil, and bee venom may reduce total skin lesions in acne vulgaris, but there is a lack of evidence from the current review to support the use of other CAMs, such as herbal medicine, acupuncture, or wet-cupping therapy, for the treatment of this condition.
Body mass index is negatively associated with acne lesion counts in Taiwanese women with post-adolescent acne. It can’t get access to the full text of this study, but it appears that researchers found evidence that heavier people have less acne than thin people.
Prevalence of acne in a community sample of 14–16 year olds has been recorded as 50% and it has been estimated that up to 30% of teenagers have acne of sufficient severity to require medical treatment.