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?

operates within carefully regulated nutritional ranges.

Too little of an essential nutrient can cause deficiency.

Too much can cause toxicity.

And the difference between a beneficial dose and a harmful one can be surprisingly important.
What Is Hypervitaminosis?

Hypervitaminosis refers to health problems caused by excessive amounts of one or more vitamins.

It is particularly associated with fat-soluble vitamins: A, D, E, and K.

Because fat-soluble vitamins can be stored in body tissues, excessive intake of some of them may accumulate over time.

Water-soluble vitamins, such as vitamin C and most B vitamins, are generally less likely to accumulate in