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The macula of the eye contains the colorful pigmented carotenoids lutein and zeaxanthin that absorb damaging blue light, protecting vision. In this study, 16 Japanese men and women, aged 26 to 57, took 29 mg of lutein, 4 mg of zeaxanthin, vitamins C, E, copper, and zinc, per day. Beginning at eight weeks and continuing through the end of the study at 16 weeks, the concentration, or density, of macular pigment increased. Those with a body-mass index score less than 25 improved more than those with higher BMI scores. Levels of the protective carotenoids in the skin also began increasing by week four, and continued to increase through 16 weeks.

Reference: Scientific Reports; 2020, Vol. 10, No. 10262

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