The role of vitamins in promoting good health and preventing disease is currently gaining recognition. Daily iron and folate intake should be higher in menstruating women than in men of similar age, while lower total intake of vitamins A, B, E, K, and zinc are based on body size, and recommendations are usually lower in women compared to men. Adequate daily intake can be achieved through a balanced diet for most nutrients and vitamins. Exceptions are the need for supplementation of most vitamins and folate in pregnant women and for vitamin D and calcium in older individuals.