New Delhi, June 29 -- Heatwaves have become increasingly common across India, with temperatures crossing 45degC in several regions. While most conversations around extreme heat focus on dehydration and heatstroke, its impact on heart health often goes unnoticed.

High temperatures force the cardiovascular system to work harder to regulate body temperature. For people living with hypertension, diabetes, obesity, or heart disease, this extra strain can increase the risk of serious complications, including heart attacks, irregular heartbeats, and fainting. The danger is that these warning signs often develop gradually and may be mistaken for simple fatigue or dehydration until they become a medical emergency.

How does extreme heat affect yo...