Salmon

Omega-3s reduce inflammation, lower IGF-1, fight inflammatory acne

Avocado

Vitamin E, healthy fats, anti-inflammatory, hydrates skin from inside

Blueberries

Antioxidants neutralize free radicals that damage skin cells

Broccoli

Sulforaphane — one of the most potent anti-acne compounds studied

Zinc-rich foods

Pumpkin seeds, oysters — zinc reduces sebum and kills P. acnes bacteria

Green tea

EGCG catechins reduce sebum production and inflammation topically and systemically

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Does food really cause acne?

Yes — modern research strongly supports the diet-acne connection, especially for high-glycemic foods and dairy. A landmark 2007 Australian study showed a low-GI diet reduced total acne lesions by 50%. The old myth that 'diet doesn't affect acne' has been largely debunked.

Is dairy the worst food for acne?

Dairy and high-GI foods compete for the top spot. Dairy (especially skim milk and whey protein) stimulates IGF-1 and androgens that drive sebum overproduction. Multiple meta-analyses show dairy consumption increases acne odds by 1.3–2.2x.

How long does it take to see skin improvement after eliminating acne-trigger foods?

Most people see noticeable improvement in 4–8 weeks after eliminating major triggers. Skin cells take ~4 weeks to turn over, so give dietary changes at least 6 weeks before judging results. Track breakouts in a photo diary for accuracy.

What is the best diet for clear skin?

A low-glycemic, anti-inflammatory diet: whole grains, vegetables, lean protein, fatty fish (omega-3s), green tea, berries. Eliminate: skim milk, whey protein, high-GI foods, seed oils. The Mediterranean diet pattern has the strongest evidence for reducing acne.

Does sugar cause acne?

Yes — through the insulin/IGF-1 pathway. High blood sugar triggers insulin which raises IGF-1, which stimulates androgen production and sebum overproduction. Cutting refined sugar and high-GI carbs is often the single most effective dietary change for acne reduction.