5. Nickel, chromium, zinc, copper
Nickel, chromium, zinc, copper are heavy metals, often found in multivitamins which play important roles in different functions of our bodies. However, you need them in really small amounts—which you likely get from food. “They do not leave your body easily, so a little goes a long way,” says Dr. Levitan.
“Taking daily extra doses could potentially cause harm, as these metals can deposit in different parts of your body, such as your brain and bones. There has also been a question of the association of heavy metals with dementia.” So, unless you have a proven, profound deficiency (often because of a chronic gastrointestinal illness), you should not take these heavy metals on a daily basis.
