Looking to Lutein for Better Vision
1 cup of cooked spinach provides 30 mg of lutein
Most of us use vision to find our way through the world, but this sense is even more important for people who depend on it for their livelihoods. For people who drive for a living, healthy eyes are a must. Supplementing with lutein, a nutrient found in green leafy vegetables, may help drivers keep their eyes in tiptop shape.
Lutein's special role in vision
Lutein is a member of the carotene family, a group of phytonutrients found in colorful fruits and vegetables. It turns out that lutein, and its closely related cousin zeaxanthin, accumulate in a part of the eye called the macula. A healthy macula is necessary for good vision.
Researchers randomly selected 120 healthy adults to receive a daily 20 mg lutein supplement or a placebo for one year. The participants were 25 to 47 years old, and all averaged at least ten hours of driving per day. Lutein from food sources, vision-related quality of life, visual acuity, blood lutein levels, and optical density of macular pigment--a measure of how much lutein has collected in the macula--were measured before, during, and after the study. Compared with the placebo group, the people who received daily lutein supplements experienced significant improvements and increases in these markers:
Vision preservation plan
A lutein supplement may protect and improve the vision of people who regularly drive for long periods of time. The study was small, and we don't yet know if the results will apply to people who don't drive for a living. Still, it points to the importance of lutein for visual health. Use our tips to develop your own vision preservation plan:
(Nutrition 2013, doi:http://dx.doi.org/10.1016/j.nut.2012.10.017)
Suzanne Dixon, MPH, MS, RD, an author, speaker, and internationally recognized expert in chronic disease prevention, epidemiology, and nutrition, has taught medical, nursing, public health, and alternative medicine coursework. She has delivered over 150 invited lectures to health professionals and consumers and is the creator of a nutrition website acclaimed by the New York Times and Time magazine. Suzanne received her training in epidemiology and nutrition at the University of Michigan, School of Public Health at Ann Arbor.