Can stress alone trigger a heart attack in a fit person? Another stress hormone called cortisol increases blood pressure, as well as blood sugar, cholesterol, and triglycerides. These increase heart rate and blood pressure, raising the heart’s demand for oxygen. The ECG might appear normal if done in the early stages of a heart attack and may not pick up the electrical signals right. Symptoms of a heart attack can occur with severely restricted blood flow but no damage, a condition called unstable angina, which a routine ECG often misses.
Source: Indian Express January 01, 2026 19:51 UTC