Exercise protects the heart far more than it endangers it. The risk sits in one narrow window: going hard, suddenly, after years of sitting still.

Untreated obstructive sleep apnoea keeps blood pressure high all night, strains the heart and is present in a large share of people with atrial fibrillation.

South Asians have their first heart attack at a median age of 53, against 63 in Western Europe and China. The reasons are only partly the ones you would expect.

A five-minute CT scan that shows whether plaque has already formed in your coronary arteries, and how that changes what you do next.

An inherited particle that standard lipid profiles never measure, and that explains a share of heart attacks in people whose cholesterol looked normal.