Fact check: Does your blood thicken in the cold, causing heart attacks?
CLAIM: An Instagram post by Dr Yokesh Arul claims that winter temperatures sharply raise heart attack risk by causing blood vessels to constrict, blood to “thicken,” and the heart’s workload to increase, especially in people with diabetes, hypertension and high cholesterol. FACT: Experts agree that cold weather can raise blood pressure and strain the heart […]