Skin & Hair

Which supplements, vitamins, foods and habits affect skin & hair? Every claim graded by the strength of the published research.

• Improves skin hydration, elasticity and wrinkles — Collagen (Mixed results, grade C: Limited)
• Causes hair loss — Creatine (Mixed results, grade C: Limited)
• Correcting a vitamin or mineral deficiency restores hair colour — Grey Hair (Benefit, grade C: Limited)
• Grey hair runs in families — Grey Hair (Harm, grade C: Limited)
• Reverses or prevents grey hair — Grey Hair (Mixed results, grade C: Limited)
• Smoking causes premature grey hair — Grey Hair (Harm, grade C: Limited)
• Stress speeds up greying — Grey Hair (Harm, grade C: Limited)
• Yogurt eaten in pregnancy is linked to less infant eczema — Yogurt and Kefir (Benefit, grade C: Limited)