From the Research
Vitamin D does have an influence on blood clotting, though its effects are complex and not fully understood, with recent evidence suggesting no definitive link between vitamin D deficiency and a prothrombotic profile 1. The relationship between vitamin D and blood clotting is multifaceted, with vitamin D potentially having both pro-coagulant and anti-coagulant properties.
- Vitamin D can increase the production of certain clotting factors in the liver, which could theoretically promote clotting.
- It also has anti-inflammatory effects that may reduce the risk of abnormal clotting.
- Vitamin D deficiency has been associated with increased risk of both bleeding disorders and thrombotic events (unwanted blood clots) 2.
- However, a systematic review found no definitive link between vitamin D deficiency and a prothrombotic profile, suggesting that the relationship between vitamin D and blood clotting is more complex than previously thought 1. The recommended daily intake of vitamin D for most adults is 600-800 IU, with blood levels ideally maintained between 30-50 ng/mL.
- People taking blood thinners like warfarin should maintain consistent vitamin D levels, as significant fluctuations could potentially affect the medication's efficacy.
- The relationship between vitamin D and clotting is particularly relevant for individuals with conditions like deep vein thrombosis or those at risk for cardiovascular events, though more research is needed to fully understand these connections 3, 4.