From the Guidelines
Crossing your legs does not directly cause blood clots in most healthy individuals, but prolonged immobility, including sitting with crossed legs for extended periods, may contribute to blood clot formation in people with certain risk factors. While the provided evidence does not directly address the relationship between crossing legs and blood clots, it highlights the importance of mobility and hydration in preventing venous thromboembolism (VTE) [ 1 ]. The evidence suggests that strategies to prevent VTE include appropriate loose clothing, frequent walks, calf muscle exercises, use of elastic compression stockings, and adequate hydration [ 1 ].
Some key points to consider:
- Prolonged air travel results in a very small absolute incidence of VTE, with a pooled RR of 2.8 (95% CI, 2.2-3.7) [ 1 ]
- A dose-response relationship was identified, with an 18% higher risk of VTE for each 2-h increase in travel duration [ 1 ]
- The incidence of VTE varies by the type and duration of travel and by individual risk factors, such as recent surgery, active malignancy, pregnancy, estrogen use, advanced age, limited mobility, severe obesity, or a thromophilic disorder [ 1 ]
- Most individuals with travel-associated VTE have one or more known risk factors for thrombosis [ 1 ]
To reduce the minimal risk of blood clots, it's advisable to:
- Change positions frequently
- Stretch your legs occasionally
- Stay hydrated if you tend to sit for long periods
- Consult with your healthcare provider for personalized advice about leg positioning and movement strategies if you have existing circulation problems or risk factors for blood clots.
From the Research
Blood Clots and Leg Crossing
- There is no direct evidence in the provided studies to suggest that crossing your legs leads to blood clots 2, 3, 4, 5, 6.
- However, it is known that prolonged periods of immobility or compression of veins can increase the risk of blood clots 2.
- The studies provided focus on the prevention and treatment of venous thromboembolism (VTE) using intermittent pneumatic compression devices 2, anticoagulant and antiplatelet therapies 3, 4, and other methods.
- While the studies do not directly address the relationship between leg crossing and blood clots, they do highlight the importance of preventing VTE in high-risk patients 2, 3, 4.
- Other factors such as genetics, age, and underlying medical conditions can also contribute to the risk of developing blood clots 3, 4.