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?

Deficiency

Zinc supports immune function, wound healing, and normal cellular processes.

It is commonly marketed as a supplement for preventing or shortening colds.

While zinc is important, taking excessive amounts for extended periods can interfere with the absorption of copper.

Copper is another essential mineral involved in blood cell production and neurological function.

Long-term excessive zinc intake can contribute to copper deficiency, anemia, low white blood cell counts, and neurological complications.

High doses of zinc may also cause nausea, vomiting, and abdominal discomfort.

The U.S. adult upper intake level for zinc is 40 milligrams per day, while European authorities use