Vitamin B12:Vitamin B12's many functions include helping to produce red blood cells, making DNA, and supporting heart health and the nervous system. You don't need more vitamin B12 after age 50, but you do need a different type of this important nutrient. Vitamin B6:Vitamin B6 is found in an array of animal and plant foods. Vitamin B6 is a water-soluble vitamin, which means your body doesn't store it and you need to consume it every day Vitamin D:Suggested vitamin D intakes don't change during mid-life for men or women, but vitamin D is worth mentioning. Your body has the ability to produce vitamin D from skin exposure to sunlight, however most people do not produce adequate vitamin D due to a variety of reasons. For example, aging is associated with a reduced capacity to produce vitamin D in the skin. Many people also fail to get enough vitamin D from food as it is found naturally in few foods. It's wise to consider dietary supplements to help you meet vitamin D needs. With time, even slight shortfalls in vitamin D jeopardize bone strength.