Heart disease remains the world’s leading cause of death, according to the World Health Organization. The article warns that “in the days or even months preceding a heart attack, people may experience prodromal symptoms — early warning signs that often go unnoticed.”

Common signals include “persistent fatigue or extreme tiredness,” which can result from reduced blood flow as arteries narrow. Another early clue is “shortness of breath,” when the body isn’t receiving enough oxygen. People might also feel “weakness or sudden physical decline without an obvious cause.”

Other warning signs mentioned are “dizziness and cold sweats,” which may suggest poor circulation, and “flu- or cold-like symptoms” that can appear days before a heart attack. One of the most recognized indicators is “chest pressure — burning, heaviness, or pain,” while swelling in the feet or ankles (edema) can occur when the heart struggles to pump blood effectively.

The article concludes that these subtle symptoms are often ignored but can signal serious heart issues. It urges readers to seek medical attention promptly and reminds that the content “is not a substitute for professional medical advice.”