Oct 29, 2009 4:23 PM by NBC
While obesity can increase the risk for blood clots, the location of the fat may be particularly important.
Researchers in Denmark did a 10-year study of nearly 60,000 men and women -- and confirmed obesity is associated with deep vein thrombosis and pulmonary embolisms.
But where those extra pounds are on the body may be key. For women -- a larger hip circumference increased the risk for clots. For men, it's a larger belly.
Researchers say they're not sure why different areas of fat on the body affect this risk.