Cold Sores & Fever Blisters. What Causes Cold Sores and Fever Blisters? Both cold sore and fever blister refer to the lip blisters caused by infections of the Herpes Simplex I virus (not to be confused with Herpes Simplex II, which is generally associated with genital herpes). Cold Sores are viral infections which cause recurrent groups of irritating, even painful blisters on the lips.
Lutein and zeaxanthin protect your eyes from harmful high-energy light waves like ultraviolet rays in sunlight. Studies suggest that a high level of both in eye tissue is linked with better vision, especially in dim light or where glare is a problem. Diets rich in these two nutrients may help hold off age-related eye diseases.
Not only that, taking lutein for eyes can help improve your eyesight even if you don't have any vision problems. Good sources of lutein for eyes include eggs, orange juice, kiwi, squash, zuchiniâ¦ the list goes on. How Does It Work? Lutein is a nutrient in the carotenoid class, which includes the more well-known beta-carotene. It is an antioxidant, meaning it prevents against oxidative damage caused by free radicals.