Many older adults take a daily vitamin because they want to stay healthy, protect their brain, support energy, or fill nutritional gaps. For some people, supplements are useful and even necessary. Vitamin B12 deficiency, for example, can affect the blood, nerves, memory, balance, and mood, and it should be treated properly when confirmed.
But there is an important truth many people overlook: more is not always better. A vitamin that is helpful in the right amount may cause problems when taken in high doses, combined with other supplements, or used
