It is not necessary to take them every day, because your body will store them and produce fat. This is a disadvantage because any excess will accumulate in body fat and could be toxic. They do not contain vitamin A. This is why infants cannot consume low-fat milk and skim milk has warning labels. Vitamin D also affects infancy and childhood well and is added to many foods, but excess vitamin D is a serious problem. It is very difficult to control what you eat and know the right amount and type of food you are eating. Use the table above to check what you eat so you'll know if it's good for you