It’s no secret that exercise has many benefits. For example, we previously reported on a study that found that regular physical activity reduced the risk of more than 200 diseases—even when it was squeezed into a couple of days as opposed to spreading it throughout the week. Included among those 200 diseases was dementia.

The study's findings suggested a need for older adults to take supplements, even if their B12 levels were considered "normal"

Researchers said the study's findings suggested the need for older adults to take supplements, even if their levels were considered "normal"