Nutrition, Inflammation, and Skin Aging: Foods That Protect and Foods That Age the Skin

Conclusions

• Skin aging is driven by both intrinsic factors like genetics and hormones and extrinsic factors, with UV radiation as the dominant external cause.
• Diet appears to meaningfully influence visible skin aging, especially through inflammation, oxidative stress, glycation, telomere shortening, and DNA damage.
• Diets richer in fruits, vegetables, carotenoids, antioxidants, omega-3 fats, and omega-6 fats are repeatedly associated with healthier-looking skin and slower biologic aging.
• Higher intakes of vitamin C and linoleic acid are linked to less wrinkling, dryness, and skin atrophy, while higher sugar and saturated fat intake are linked to worse skin appearance.
• Carotenoid-rich foods may help protect skin by acting as antioxidants and by filtering some UV light, though they do not replace sunscreen.
• Excess sugar promotes advanced glycation end products, which stiffen collagen and elastin and contribute to wrinkling and sagging.
• Ultra-processed foods are associated with shorter telomeres, accelerated biologic aging, and likely worse skin aging.
• A Mediterranean-style diet, with minimal ultra-processed food and more plant foods, fish, legumes, and healthy fats, is presented as the most protective overall pattern.
• Cooking methods matter because high-heat cooking can increase AGE formation, while steaming, boiling, poaching, and acidic marinades may reduce it.
• A pro-inflammatory, pro-oxidation dietary pattern may also increase the risk of skin cancer, especially in younger people.