Acne · 4 mechanisms + the real diet story

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Zinc
Some people with acne have low blood zinc, and bringing it back into the normal range is what zinc is for in acne; the evidence behind it is limited. Getting back to normal is enough, and taking very large amounts long term does harm.

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How acne forms

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Acne is not a dirty face. It is chronic inflammation of the oil gland deep inside a pore, and four links feed one another. Androgens make the gland produce more oil (sebum). Skin cells at the mouth of the hair follicle multiply too fast and stick together, plugging the exit. A bacterium that normally lives on the skin, Cutibacterium acnes, overgrows in the trapped, low-oxygen oil. The immune system then releases inflammatory signals, and how strong that inflammation is decides whether you get small blackheads and whiteheads (comedones) or red bumps, pus-filled spots and even cysts.

So acne is not an infection, and killing bacteria alone is often not enough. Treatment depends on which link dominates.

One rare situation cannot be managed slowly: if spots suddenly turn into widespread pus-filled lesions together with fever and joint pain, this is acne fulminans, and you need medical care immediately.

Educational content, not medical advice — consult a clinician.

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