An Anti-Wrinkle Diet: Nutritional Strategies to Combat Oxidation, Inflammation and Glycation

Rajani Katta, MD; Ariadna Perez Sanchez, MD; Evelyne Tantry

Disclosures

Skin Therapy Letter. 2020;25(2):3-7. 

In This Article

The Role of Nutrient Supplementation

A common question in patient care centers on the use of dietary supplements, more specifically, given the link between dietary compounds and the biochemical processes that impact skin aging, is if there is a benefit to consuming supplementation either in addition to, or in place of, dietary consumption?

While a review of supplements is beyond the scope of this article, a few points must be emphasized. At this time, there is very limited evidence for benefit of nutrient supplementation beyond the treatment of deficiency states. Indeed, there is significant evidence of potential harm from some supplements.

The primary role of supplementation has always been, and continues to be, in the treatment of deficiency. Although research from deficient-state conditions is often used to justify supplementation in general, evidence is lacking for this approach.

As one example, biotin deficiency leading to hair loss may be improved with supplementation, but has not shown efficacy in hair loss overall.[78,79]

In the case of AOs, supplements have not shown benefit and in some cases have shown harm. AO supplements were the subject of much research, given promising observational human studies of dietary intake as well as laboratory and animal studies. Unfortunately, multiple trials of high-dose (as opposed to dietary dose) vitamins C and E, beta-carotene, and selenium, indicated that they were not effective in non-melanoma skin cancer (NMSC) prevention.[27] In fact, some may even become pro-oxidant at high doses, as in a study of women exhibiting higher rates of skin cancer after use of a supplement containing vitamins C and E, beta-carotene, selenium, and zinc (with median follow-up of 7.5 years).[80] This emphasizes the point that nutrients must be at the right dose in order to provide benefits. In the case of AOs, the ideal dose appears to be physiologic doses, such as that supplied via whole foods.

This issue of short-term tolerability not necessarily equaling long-term safety is an important point to remember as researchers continue to study promising supplements. Nicotinamide has shown benefit in a sharply defined population, with a 23% reduction in new NMSC in those at high risk, and has been well-tolerated over a 1-year period.[81] The herb Polypodium leucotomos has demonstrated photoprotective abilities in short-term studies, but also lacks long-term data.[82,83]

In the case of other supplements, evidence is simply lacking. One review summarized published trials of collagen supplementation used for skin conditions ranging from aging skin, to wound healing, to cellulite.[84] In total, the authors found only 11 studies, some funded by the manufacturer and some lacking placebo, utilizing at least three different types of collagen at widely differing doses and duration.

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