DVT Risk Factors: Are You at Risk for a Blood Clot?

Deep vein thrombosis (DVT) does not strike at random. While anyone can develop a blood clot in the deep veins of the leg, certain circumstances and health conditions raise the risk considerably. Understanding where you stand is the first step toward prevention. Here, Dr. David Fox of Fox Vein & Vascular in Manhattan breaks down the major risk factors for DVT.

Lifestyle and Situational Risk Factors

Some of the most common triggers for DVT come down to circumstance rather than chronic illness:

• Prolonged immobility — long flights, road trips, or extended periods at a desk slow blood flow in the legs
• Recent surgery or hospitalization, especially orthopedic procedures like hip or knee replacement
• Injury to a leg, which can damage the vein wall
• Extended bed rest during recovery or illness
• Smoking, which damages blood vessels and affects clotting

If you frequently travel for work or have a sedentary routine, our guide on how to prevent DVT on long flights offers practical steps to protect yourself.

Medical and Health-Related Risk Factors

Several underlying conditions and characteristics increase clotting risk:

• Obesity, which adds pressure to the veins in the legs and pelvis
• Cancer and certain cancer treatments, which can increase the blood’s tendency to clot
• Heart and lung disease
• Inflammatory conditions such as inflammatory bowel disease
• Age over 60, though DVT can occur at any age

Hormonal Risk Factors

Hormones play a meaningful role in clotting risk:

• Pregnancy increases pressure on the veins of the legs and pelvis, and the risk remains elevated for several weeks after delivery
• Estrogen-based birth control and hormone replacement therapy can raise clotting tendency

Genetic and Inherited Risk Factors

Some people are born with conditions that make their blood clot more easily, such as Factor V Leiden. A personal or family history of blood clots is one of the strongest predictors of future DVT. If clots run in your family, it is worth discussing inherited clotting disorders with a vascular specialist.

How to Lower Your Risk

Many risk factors are manageable. Staying active, maintaining a healthy weight, not smoking, staying hydrated, and moving regularly during long periods of sitting all help keep blood flowing. If you have multiple risk factors or a history of clots, your physician may recommend compression stockings or, in some cases, preventive medication around high-risk events like surgery or travel.

Know Your Risk, Protect Your Health

If several of these risk factors apply to you, a conversation with a vascular specialist can help you understand your individual risk and build a prevention plan. And if you ever notice the warning signs of DVT, seek care right away. Learn more about evaluation and care on our DVT treatment page.

Concerned about a blood clot or unexplained leg pain or swelling? Don’t wait. Schedule a consultation with Dr. David Fox at Fox Vein & Vascular for an expert vascular evaluation. Call (212) 362-3470 or visit foxvein.com to book your appointment.