Not sure what this means... the full article is at:
http://www.nytimes.com/2008/02/07/health/07diabetes.html?em&ex=1202533200&en=44f11d56e70417f7&ei=5087%0ADiabetes Study Partially Halted After Deaths
By GINA KOLATA
Published: February 7, 2008
For decades, researchers believed that if people with diabetes lowered their blood sugar to normal levels, they would no longer be at high risk of dying from heart disease. But a major federal study of more than 10,000 middle-aged and older people with Type 2 diabetes has found that lowering blood sugar actually increased their risk of death, researchers reported Wednesday.