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Lutein increases macular pigment

Researchers said several large clinical trials had shown that macular pigment declines as lutein in the diet decreases, raising the chances for AMD.

In one study, 126 people with AMD took lutein or a placebo. After six months, macular pigment optical density—a measure of pigment thickness—increased 28 percent compared to placebo, and the lutein group had better visual perception and clarity.

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