<< Back

6 Ways to Prevent Deep Vein Thrombosis

April 23, 2025

It might start with no symptoms at all — but deep vein thrombosis, or DVT, can quickly become life-threatening. The condition happens when a blood clot forms in a deep vein, and is at risk of breaking off and causing a pulmonary embolism.

“DVT doesn’t always come with warning signs,” says Stephanie Saltzberg, MD, a vascular surgeon at the Hartford HealthCare Heart & Vascular Institute. “That’s why it’s so important to know your risk and take steps to prevent it.”

With Dr. Saltzberg’s help, here’s what you need to know.

Are you at risk for deep vein thrombosis?

There are many reasons someone might develop DVT.

Common risk factors include:

• Long periods of sitting, bed rest or limited mobility.
• Recent surgery or injury, especially involving the legs or hips.
• Being over age 60.
• Family history of clotting disorders.
• Pregnancy.
• Obesity.
• Smoking.
• Birth control pills or hormone replacement therapy.
• Cancer.

“While your doctor will guide you based on your personal risk factors, there are plenty of steps you can take today,” says Dr. Saltzberg.

Here’s how to prevent deep vein thrombosis.

1. Stay active.

Long periods of sitting – whether at your desk or during travel – can slow circulation.

“Try to get up and move around at least once an hour,” says Dr. Saltzberg. “Movement is one of the easiest and best ways to reduce your risk of blood clots.”

2. Wear compression socks.

On your feet all day? Compression socks are your new best friend.

“These apply gentle pressure to your legs and ankles, improving blood flow to the heart,” explains Dr. Saltzberg. “They also help reduce swelling and discomfort.”

And if you’re flying, slip them on before you head to the airport.

3. Stay hydrated.

Water helps keep your blood from becoming too thick or sticky.

“Just remember, not all fluids are equal,” says Dr. Saltzberg. “Caffeine and alcohol can dehydrate you and raise your clot risk.”

> Related: Why Does Alcohol Cause Cancer?

4. Maintain a healthy weight.

Extra weight puts added pressure on your leg veins, which can affect circulation.

“Even small weight changes can make a difference,” says Dr. Saltzberg. “Whether it’s a new diet or more activity, talk to your doctor about ways to reduce strain on your vascular system.”

> Related: 8 Heart-Healthy Snacks to Keep You Going

5. Quit smoking.

If you need another reason to quit smoking or vaping, this is it.

“Smoking is a major preventable risk factor for DVT,” says Dr. Saltzberg. “The sooner you quit, the better your blood flow and overall health.”

6. Look at your medications.

Some medications – including hormones or certain cancer treatments – can increase clot risk.

“Talk to your doctor if you’re concerned,” says Dr. Saltzberg. “We’ll help weigh the benefits and risks and adjust your treatment plan if needed.”

> Want more health news? Text StartHere to 85209 to sign up for text alerts 

When to call your doctor.

If you notice swelling, pain or redness in your leg, don’t ignore it. These could be signs of a blood clot.

“It’s also smart to check in if you have risk factors like a family history of clots, recent surgery or long periods of immobility,” says Dr. Saltzberg. “We can assess your risk and walk you through prevention options that fit your lifestyle.”