According to an exciting recent study, most older adults can meaningfully extend their healthspan—the years lived free of major chronic disease—by making very small, combined improvements in sleep, movement, and nutrition, rather than dramatic changes in any one area.

Irregular sleep was not good in any study Among all the studies reviewed, irregular sleep was either neutral or harmful; none showed that irregular sleep was good for health or performance In some long‑term studies, each extra hour of fluctuation in sleep timing was linked to notably higher risk of metabolic syndrome and heart events.

I have long advocated that exercise can help reduce symptoms of depression in many adults, especially when done regularly at light to moderate intensity. An updated Cochrane review, just published, further supports my position. It suggests that exercise is generally safe and accessible and can be part of a broader plan to support mood, brain health, and overall well‑being.