Sunday, 23 September 2018

[Research] [PSA] [Acne] Hunter-Gatherers don't get acne

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I was wondering how evolution screwed up badly enough to make such an unpleasant skin condition so common. It occurred to me, maybe acne is like many other health conditions that are a mainly product of an affluent industrialized Westernized lifestyle, like obesity and back pain. After Googling I discovered a study showing the people of New Guinea (who live a traditional hunter-gatherer lifestyle) have NO acne. None. Not even the adolescents.Background In westernized societies, acne vulgaris is a nearly universal skin disease afflicting 79% to 95% of the adolescent population. In men and women older than 25 years, 40% to 54% have some degree of facial acne, and clinical facial acne persists into middle age in 12% of women and 3% of men. Epidemiological evidence suggests that acne incidence rates are considerably lower in nonwesternized societies. Herein we report the prevalence of acne in 2 nonwesternized populations: the Kitavan Islanders of Papua New Guinea and the Aché hunter-gatherers of Paraguay. Additionally, we analyze how elements in nonwesternized environments may influence the development of acne.Observations Of 1200 Kitavan subjects examined (including 300 aged 15-25 years), no case of acne (grade 1 with multiple comedones or grades 2-4) was observed. Of 115 Aché subjects examined (including 15 aged 15-25 years) over 843 days, no case of active acne (grades 1-4) was observed.As I'm sure you know hunter-gatherers eat very differently than we do. Their diet is very low in sugar and salt. Sources of simple carbohydrates are not as common. The difference is not genetic, because as the study I linked shows, hunter-gatherer populations who become Westernized also develop Western health conditions.The conclusion researchers have drawn from this information is acne would not be common in agricultural societies if we did not eat foods with a high glycemic index, causing our insulin to spike. There is a lot of anecdotal evidence here about the influence diet has on acne but there is also research supporting that link. Maybe doctors should advise patients with acne issues to alter their diet. The general medical community might not be aware of this link, or maybe they don't bother giving this advice because our society makes it so difficult to comply with dietary restrictions.There is a thread on r/AskHistorians which discusses the study and concludes acne was extremely uncommon for most of human history. There is also a post on this sub from three years ago which discusses this research.Perhaps you may know this already but as someone who lived with cystic acne for years and has seen a lot of medical professionals, this is new information to me and I think it's important to share it. I'm not telling you what to do with your diet because avoiding sugar is extremely difficult but we should all be aware of what it's doing to our body regardless.
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