EAT MORE...
. . . BEETROOT, which is rich in nitrates. A study of 2,000 people showed those who ate between 100mg and 142mg of nitrates daily had a 35 per cent lower risk of age-related macular degeneration — a leading cause of blindness, reports the Journal of the Academy of Nutrition and Dietetics. Beetroot has nearly 15mg of nitrates per 100g.