Taking vitamins without knowing whether your body needs them has become a common health habit. But what happens when the supplements meant to protect your health begin working against it?

Taking vitamins without knowing whether your body needs them has become a common health habit. But what happens when the supplements meant to protect your health begin working against it?

Millions of people start their mornings with a handful of pills: vitamin D for immunity, magnesium for sleep, zinc for protection against illness, iron for energy, and multivitamins to cover whatever their diet might be missing.

The intention is usually good. People want to feel healthier, prevent disease, slow aging, and improve their overall well-being.

But there is a growing problem behind this wellness trend: many people take nutritional supplements