In 2006 research patients with high levels of zeaxanthin in their blood plasma had a 93% lower risk of macular degeneration. Similarly, patients with high total zeaxanthin in lutein in their blood plasma had 79% reduced risk of macular degeneration compared with patients with low total lutein and zeaxanthin in blood plasma.
Published: IOVS, June 2006, Vol. 47, No. 6
Zeaxanthin is a yellow phytonutrient pigment located in many fruits and vegetables such as lettuce, broccoli, goji berry, kale, turnip greens, collard greens, kiwifruit, and brussel sprouts.