slow enrollment, funding ended

The purpose of this study is to evaluate the effect of Vitamin D supplementation on cardiovascular disease and certain cells (T-regulatory cells) in the body that play a role in plaque formation in arteries. This study will determine the levels of Vitamin D and T-regulatory cells in subjects with coronary artery disease and if Vitamin D supplementation will affect future events such as heart attach and stroke.

Inclusion Criteria:

• between the ages of 30 and 80 years
• have a history of medically treated coronary artery disease

Exclusion Criteria:

• history of smoking in the past 2 years
• history of diabetes mellitus