Question: what are the major risk factors for dvt?
Answer: Inheriting a blood-clotting disorder. ... 
Prolonged bed rest, such as during a long hospital stay, or paralysis. ... 
Injury or surgery. ... 
Pregnancy. ... 
Birth control pills (oral contraceptives) or hormone replacement therapy. ... 
Being overweight or obese. ... 
Smoking. ... 
Cancer.