Blood thinners are medicines that help blood flow smoothly through your veins and arteries. They also keep blood clots from forming or getting bigger. They’re used to treat some types of heart disease and heart defects, and other conditions that could raise your risk of getting dangerous clots.
They can protect against heart attacks and strokes. But they also come with risks: For example, they’ll cause you to bleed more than usual when you cut yourself.
The lifesaving benefits of these drugs...
And obesity puts you at risk for diabetes, which boosts your chances for getting DVT, too.
What You Can Do
Studies show that losing weight can change your blood chemistry and lower your risks. Overweight and obese adults who did moderately intense aerobic exercise improved their blood health, even if they didn't lose weight.
Unfortunately, it doesn't look like you can lower the risk of a second DVT by losing weight after you've had one.
A lot of fish with omega-3 fatty acids in your diet may help protect your blood against abnormal clotting. Avoid high-carb diets -- they can make your blood more likely to clot.
Your doctor can and should help you get from obese to a healthy weight.