While vitamin C is essential for health, high doses can cause serious side effects. Learn the risks and how to use it safely, ...

Too much magnesium can cause diarrhea and abdominal cramps. In severe cases, an overdose may cause difficulty breathing, ...

Vitamin B12 overdose is so rare that serious adverse effects from consuming large amounts of vitamin B12 have only been reported in a handful of studies in the medical literature. It’s effectively ...

Vitamin C supports immunity and skin health, but excessive intake can cause kidney stones, iron overload, enamel erosion, ...

Dear Dr. Roach: Several years ago, in my early 80s, my gynecologist told me (like all women who mainly stayed indoors) that I should be taking 4,000 IU of vitamin D3 daily. Yet today, I read an ...

In a stark and sobering revelation that underscores the often-overlooked dangers lurking within our daily routines, experts are sounding a significant alarm following the death of an elderly man from ...

Your body can’t make vitamin A on its own, so it relies on certain foods or supplements to get it. (Getty Images) Vitamin A might not be the buzziest nutrient out there, but it plays an important role ...