Remember being warned as a kid that if you didn't take enough vitamin D, you'd come down with a scary disease called rickets? Or that if you didn't get your calcium, your bones wouldn't grow right? Chances are you heard the message about getting enough vitamins and minerals. But have you heard about the risks of an overdose?

Just when you thought you had your summertime outdoors routine down -- plenty of sunscreen, a large hat, limited exposure between 10 a.m. to 2 p.m. -- comes the news that Americans aren't getting enough of the "sunshine vitamin" -- vitamin D.

Chances are you know you need minerals such as calcium and iron. But five lesser-known minerals also deserve your attention.

Getting too little vitamin B12 may leave you feeling fuzzy in your thinking and lead to numbness or tingling in your hands and feet.

Adding anything to your regular diet to improve your health or healing is considered a dietary supplement.