Warfarin

Articles tagged with "Warfarin".

Warfarin and Vascular Calcification: An Unintended Consequence of Vitamin K Blockade

Tags: Vitamin K, Vascular Calcification, Warfarin

June 16, 2025

Dr. Kumar’s Take:

This review highlights a serious and often overlooked risk of long-term warfarin use: vascular calcification. The key problem is that warfarin not only thins the blood but also blocks vitamin K, a nutrient critical for keeping our arteries flexible and free from calcium buildup. The review makes a strong case for rethinking warfarin use, especially in patients who are already at high risk for arterial disease, and considering alternatives that don’t block vitamin K.

Does Long-Term Warfarin Weaken Your Bones? A Look at Bone Density Risk

Tags: Vitamin K, Warfarin, Bone Health

June 15, 2025

Dr. Kumar’s Take:

This study highlights a lesser-known side effect of long-term warfarin use: lower bone mineral density in the spine. Patients on warfarin therapy—especially those taking it for more than a year—had significantly weaker bones in their lumbar spine compared to healthy controls. While warfarin remains a life-saving medication for people with mechanical heart valves, this research suggests it may also interfere with vitamin K’s role in bone health. If you or someone you know is on long-term warfarin, it may be worth discussing with your provider as there are other anticoagulants without the same consequences.

Does Warfarin Increase the Risk of Bone Fractures in Older Adults?

Tags: Warfarin, Osteoporosis, Atrial Fibrillation

June 15, 2025

Dr. Kumar’s Take:

This large study of older adults with atrial fibrillation found that long-term use of warfarin—a common blood thinner—was linked to a higher risk of fractures, especially in men. Warfarin blocks vitamin K2, which is essential for strong bones. If you or a loved one is on warfarin for over a year, it may be worth discussing fracture prevention with your doctor. This could include reviewing your diet, checking vitamin D levels, or considering alternative anticoagulants that don’t affect bone health.