These factors are thought to include a family history of the condition, smoking, pollution and bright sunlight. Lutein and zeaxanthin are carotenoids with antioxidant properties. They offer protection against bright sunlight by absorbing harmful blue light and protecting the macula against free radical damage. A diet high in carotenoids may also protect against cataracts, heart disease and cancer. Whilst the body cannot manufacture its own lutein, it can convert lutein in to zeaxanthin, making lutein an essential part of our daily diet.
Experts agree that taking a nutritional supplement is no substitute for a healthy diet.
Whilst research has shown that diet can offer protection against AMD, there has been little research to suggest that supplements can offer the same protection. Large doses of some antioxidant vitamins can also produce side effects and can inhibit the body's absorption of other essential nutrients. If you wish to supplement your diet, choose a well-balanced antioxidant supplement containing no more than 6mg of lutein. Do not exceed the recommended daily dosage. The Society regrets that it is unable to offer any guidance concerning the lutein spray mentioned in the Daily Mail.