Jeff Angileri
May 6, 2009, 9:25 PM

A new study shows nearly three out of four Americans are not getting enough vitamin D. That's prompting doctors to recommend more supplements.

You can get it from a glass of milk or by spending a little time in the sun. But a new study finds as many as 75% of Americans are not getting enough vitamin D.

Even standing out here in the sun, my face is the only thing being hit, and my hands, said dietitian Tammy Fumusa at St. Mary's Hospital. So, I'm not getting full exposure to the sun, where it can be converted.

Fumusa says having a deficiency in vitamin D can lead to bone density loss. Adequate vitamin D has been shown to reduce the causes of cancer, heart disease and improve overall health.

There are plenty of ways to get the recommended amount. Milk, cheese, and other foods are fortified with vitamin D, as are cereals, yogurts and even some juices.

If you don't get a lot of sun, you live in Wisconsin, you're not eating fish, or grains, or milk, you may want to talk to your doctor about taking a vitamin D supplement, Fumusa said.

Older adults should check to make sure supplements don't interfere with other medications. Your doctor can check your vitamin D levels at your next visit.