Lettuce is a root vegetable, the general population can be consumed in moderation, three kinds of people can not eat lettuce this statement is not based on science. Lettuce is also known as lettuce, its flesh is tender. Stems and leaves can be used as vegetables, one of the common daily life vegetables, its carbohydrates, protein, fat content is low, such as every 100g of lettuce contains about 2.8g carbohydrates, 1g of protein, 0.1g of fat, so you can be appropriate with carbohydrates, protein content of food with food, is conducive to a balanced and varied daily diet. Lettuce can be cold, fried, etc., the general population can be eaten, daily according to personal preference moderate consumption.