How much vitamin d you should take if you have osteopenia?

According to a study done in the UK, a daily dose of Vitamin D will cut the risk of cancer by 25 percent. Dr. Jennifer Ashton from The Early Show, said healthy adults can take 2,000-3,000 units per day in supplement form. You should check with your doctor first he/she may want to do a blood test to check your vitamin D level. Vitamin D can be toxic in very high doses. Dr. Ashton also said that just 15-20 minutes of sunlight a day will give you sufficient Vitamin D. This is one of the few vitamins that works well in supplement form so you don't have to have sun exposure to get the full benefits of vitamin D. People over 50 who work indoors may need a supplement of 5,000 IU per day.