Lutein naturally occurs in the macula of the eye and is an integral component found in macular pigment. It quenches singlet oxygen and other harmful free radicals. Lutein is highly valued by medical doctors and eye care experts.

Lutein, an antioxidant found in dark green leafy vegetables, may improve vision in people with retinitis pigmentosa and other degenerative eye conditions according to a recent study.A study published in the journal Circulation suggests that increased dietary intake of the nutrient lutein may slow the progression of arterial wall thickening and protect against early atherosclerosis (clogged arteries).