Research

Hormonal

Long-term use of GLP-1 receptor agonists (≥78 weeks) significantly increases the risk of deep vein thrombosis (DVT) compared to placebo or other anti-diabetic drugs.

If you are taking a GLP-1 medication (like Ozempic, Wegovy, or Victoza) for more than a year, be aware that your risk of deep vein thrombosis (DVT) is higher than if you were not taking it. This risk is most notable in people with existing cardiovascular disease. However, the absolute increase in risk is small. Discuss any history of blood clots with your doctor before starting or continuing long-term therapy.

GoodSupportsHIGH confidence
GLP-1RAs were found to significantly increase the risk of DVT when used for longer duration (≥78 weeks) (OR, 2.32 [95% CI, 1.49–3.60])
Yiwen Liu et al. · Journal of the American Heart Association · 2025

Why this rating

Meta-analysis of 39 RCTs with 70,499 participants, moderate quality evidence due to potential underreporting of adverse events.

Source

Glucagon‐Like Peptide‐1 Receptor Agonists and Risk of Venous Thromboembolism: A Systematic Review and Meta‐Analysis of Randomized Controlled Trials

Yiwen Liu et al. · Journal of the American Heart Association · 2025

DOI 10.1161/jaha.124.039446

Meta-analysis · 39 studiesCited 13×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →