Carotenoids are natural pigments that give many fruits and vegetables their red, orange, and yellow colors. Your body can turn some of them into vitamin A, and they act as antioxidants.
Eye health gets strong support from lutein and zeaxanthin, two key carotenoids. They also maintain immune function and skin. Certain forms may help the heart and reduce oxidative stress.
Doses depend on the specific carotenoid and form; you can find them in multivitamins or standalone supplements. Because they are fat-soluble, take them with a meal that contains fat to improve absorption.
High doses of beta-carotene supplements may raise lung cancer risk in smokers. Too much can cause harmless yellowing of the skin, called carotenodermia. Pick reputable brands and talk to your doctor before starting.