Home > Diet and nutrition > Healthy Food > Vegetables Updated 27 February 2013 Cos lettuce Cos lettuce is linked to a reduced risk of cancers. It is also a good source of folate and helps to protect against age-related macular degeneration. 0 Vit & Min doses per day » Count calories in food » Is my vegetarian diet balanced? » Ask The Dietitians » Cos lettuce is linked to a reduced risk of cancers. It is also a good source of folate and helps to protect against age-related macular degeneration. The dark outer leaves are the richest in carotenoids. Cos lettuce must be refrigerated and eaten as soon as possible, as the vitamin C content reduces the longer it is kept.These can be eaten freely as they have a low calorie content. Calories 16 Fibre 1,2g Potassium 220mg Folate 55mcg Per 100g NEXT ON HEALTH24X What will happen to Noakes if he is (really) found guilty? 2016-12-02 14:13 More: Healthy FoodVegetables advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... From our sponsors Sun protection for all children Understanding your sunscreen The science behind cosmeceuticals Do you know these 5 facts about skincare? Live healthier The debate continues » Working out in the concrete jungle 7 top butt exercises for guys 10 things pole dancing can do for you The running vs. walking debate There are many different theories when it comes to the running vs. walking for health and weight loss. Veganism a crime? » Running the Comrades Marathon on a vegan diet Are vegans unnatural beasts? Can a vegan be really healthy? Should it be a crime to raise a baby on vegan food? After a number of cases of malnourishment in Italy, it may become a crime to feed children under 16 a vegan diet.