Eggs

Fresh, organic eggs that are certified salmonella-free are an excellent food. They contain high levels of selenium which may be lacking in the diet and have cancer- and heart disease-fighting qualities. They're a good source of iodine, which can help to promote healthy thyroid activity and also contain lecithin, a substance that can help to prevent heart disease and gallstones. Eggs are rich in vitamins and minerals, including vitamin E and zinc - both lacking in many older people's diets - as well as the B group, which helps nerve health and stress, and protein. Aim to have about four eggs a week unless you have specifically been told to avoid cholesterol in your diet.