Objectives
To investigate the effects of mango intake on skin wrinkles (SW) and skin carotenoids (C) in postmenopausal women.
Methods
A randomized, two-arm parallel study was conducted to assess 16 weeks (wk) of mango intake on SW development in the left and right lateral canthus (crow's feet) of healthy postmenopausal women, aged 50 to 70. Participants consumed either 85 g (0.5 cup) or 250 g (1.5 cup) of mangos, 4 times/wk. High-resolution facial images were captured at baseline, 8 wk, and 16 wk. SW were separated into three categories: Average (A), Fine (F), and Emerging (E) with indices of length (L), width (W) and severity (S). F lines were defined as medium contrast wrinkles, while E lines were low contrast wrinkles, both at a minimum length of 2.6 mm. The A SW was the mean contrast of all pixels of a SW. S was calculated as contrast multiplied by L. C values were measured with Raman spectroscopy and participants were separated into low baseline carotenoid (<383 nm; LBC) or high baseline carotenoid (>383 nm; HBC) groups. Participants started the study either in the Fall (Sep 1 – Nov 30) or Winter (Dec 1 – Feb 28) season. SW changes with mango intake were analyzed using One Way ANCOVA with the change in carotenoids, baseline BMI and season as covariates.
Results
Among women in the LBC group, SW L was differentially affected by mango intake, with an increase in L in the 250 g group compared to decreased L in the 85 g group (left AL: 8wk, P = 0.026 and 16 wk, P = 0.014; left FL: 8 wk, P = 0.009 and 16 wk, P = 0.048). These specific SW were not significantly changed in the HBC group. A positive correlation between C and left FS (r = 0.434, P = 0.027) was seen in 85 g group, while C was positively correlated with SW L and S with 250 g of intake. This includes left AL (r = 0.407, P = 0.039), left FS (r = 0.381, P = 0.054) and right ES (r = 0.479, P = 0.008). After 16 wk, women with LBC had a significant increase in C (P = 0.017) with 250 g compared to 85 g of mango intake. No changes in C were noted for the HBC group (P = 0.909).
Conclusions
Among women with baseline LBC, reduction in SW were observed with 85 g, but not 250 g, of mango intake. Confirmation of these results in a controlled dietary intervention trial are warranted.
Funding Sources
National Mango Board.