When You're Getting Too Much

There is too much of a good thing, even when it comes to vitamins. For example, too many carrots can cause your skin to turn orange from the Beta-Carotene and vitamin A. Too much vitamin C, a vitamin abundantly found in oranges, can cause much more serious side effects such as kidney stones or chronic diarrhea if taken in extreme excess. Ironically, one source also indicates that extreme excess can actually cause a stuffy nose instead of prevent the common cold as most people believe it does.

When you're not getting enough
On the other hand, a lack of vitamins can cause detrimental effects. Lack of vitamin C can cause scurvy, a serious disease that can lead to death if left untreated. Other vitamin deficient related diseases include anemia, brain or nerve damage, impaired vision and a variety of bone related diseases.

However, watching your vitamin intake or using a supplement can be a very good thing, especially in the world of fast food and super sized Cokes that we live in. After analyzing your diet for holes in nutrition, you can properly determine exactly what vitamins you might be deficient in and work from there to fill in the gaps with supplements or a change in diet.