In this new episode of “Long and Healthy Living,” we bring order to the world of supplements, distinguishing between what can be useful, what we probably don't need, and what often responds more to marketing than to a genuine nutritional need.

And we'll debunk a particularly important misconception: A supplement doesn't transform a poor diet into a healthy one.

The foundation remains far less dramatic: a balanced diet, physical activity, adequate rest, and consistent habits. Supplements can have their place, but they should be used when there's a reason to do so, not simply because they're trendy.