The Benefits of Compression Socks in Minimising the Risk of DVT’s in Pregnancy
Pregnancy is a time of immense change for the body, and with these changes come unique challenges for the circulatory system. One important health consideration during pregnancy is the increased risk of developing deep vein thrombosis (DVT) — a blood clot that forms in the deep veins, most often in the legs.
While the overall risk of DVT in pregnancy is still relatively low, it is higher than in non-pregnant women due to a combination of hormonal, circulatory, and lifestyle factors. This is where graduated compression socks or other medical grade garments can play a vital role in reducing risk and keeping both mum and baby safe.
Why Pregnancy Increases DVT Risk
During pregnancy, several physiological changes make blood clots more likely:
Hormonal shifts: Higher levels of progesterone relax the walls of blood vessels, slowing circulation.
Increased blood volume: Your body produces more blood to support the baby, which can lead to pooling in the legs.
Growing uterus: As the uterus expands, it can press on pelvic veins, reducing blood return from the legs.
Reduced mobility: Many women naturally slow down in later pregnancy or after birth, further impacting circulation.
How Compression Socks Help
Compression socks or leggings are specifically designed to improve circulation in the lower legs by applying graduated pressure — firmest at the ankle, gradually decreasing up the leg.
The key benefits include:
Enhanced blood flow
The gentle squeezing effect encourages blood to move upward toward the heart, reducing pooling and stagnation that can contribute to clot formation.Reduced swelling (oedema)
Pregnancy often comes with swollen ankles and feet due to fluid retention and slower circulation. Compression socks help manage this, making daily movement more comfortable.Improved comfort for travel
Long periods of sitting — such as car rides or flights — can further increase clot risk. Wearing compression socks during travel offers extra protection and comfort.Postnatal support
The risk of DVT doesn’t end at birth; in fact, the postpartum period is another time of increased risk for clot development. Continuing to wear compression socks after delivery, especially following a caesarean or if mobility is reduced, can provide ongoing protection.
Who Should Consider Wearing Compression Socks?
Compression socks are beneficial for most pregnant women, particularly those who:
Have a personal or family history of blood clots.
Are expecting multiples (twins, triplets, etc.).
Spend long periods on their feet, or conversely, sitting for extended times.
Have significant swelling in the ankles and calves.
Are planning long-distance travel during pregnancy or soon after birth.
Always consult your healthcare provider before starting compression wear, especially if you have underlying vascular or skin conditions.
Choosing the Right Compression Socks
Not all compression is created equal. Medical-grade compression stockings provide graduated pressure tailored to health needs. These should be fitted by a qualified provider to ensure correct sizing and effectiveness. Lower-level over-the-counter options can also provide relief for swelling and general comfort but may not offer the same DVT protection as medical-grade stockings. As pelvic health physiotherapists we can recommend brands and products specific to you and your needs, but one such brand is TheRY and their Comforter Maternity Compression and Rescuer Maternity Compression socks.
These have graduated compression of 15- 20mHg (Class 1) to help push blood up from the ankle and foot, made with bamboo yarn which is soft and breathable, have a cushioned footbed and heel for additional comfort and weight options to suit evening comfort or everyday wear. Most importantly, they are listed by the Australian Therapeutic Goods Administration which means they have been proven to provide positive benefit and are often claimable under private health insurance rebate schemes. TheRY’s compression socks also come in a range of colours and designs so you don’t have to compromise on style either (lets face it: the hospital orange coloured ones aren’t that cute)!
Final Thoughts
While DVTs are uncommon, their consequences can be serious. Compression socks are a simple, safe, and effective tool to help reduce your risk during pregnancy and beyond. By improving circulation, reducing swelling, and supporting overall leg health, they can make a meaningful difference in both comfort and safety.
If you’re considering compression socks during pregnancy, speak with your doctor or pelvic health physiotherapist to find the right type and fit for your needs and learn about how and when to use them effectively.
Check out the collaborative post we did with TheRY Group @embrace.physio.pilates , @physio_with_jess and @therygroup
Author: Jessica Adams, 2025