Blood Glucose and Cardiovascular disease.
It seems that elevated fasting or non fasting blood glucose levels may be the best predictor of cardiovascular disease. There are plenty of studies in this area, here's just a couple:
[url=http://content.onlinejacc.org/article.aspx?articleid=1208652&issueno=25]American College of Cardiology Foundation | Journal of the American College of Cardiology | Nonfasting Glucose, Ischemic Heart Disease, and Myocardial InfarctionA Mendelian Randomization Study[/url]
[url=http://www.ncbi.nlm.nih.gov/pubmed/15562194]Blood glucose and risk of cardiovascular disea... [Diabetes Care. 2004] - PubMed - NCBI[/url]