can you have a heart attack and not know it

Yes, it is possible to have a heart attack and not know it. This is called a "silent heart attack" or silent myocardial infarction. Silent heart attacks produce no symptoms or only mild, unrecognized symptoms that people might mistake for less serious issues like indigestion, fatigue, or muscle strain. Estimates suggest that silent heart attacks may account for 20% to 60% of all heart attacks. People often find out they had a silent heart attack only after tests like an electrocardiogram (ECG) reveal signs of heart muscle damage. Despite the lack of obvious symptoms, the damage caused by a silent heart attack is real and increases the risk for future heart problems, including heart failure and additional heart attacks. Common subtle symptoms that may be overlooked include mild discomfort in the chest, jaw, upper back, or arms, indigestion, and flu-like symptoms. Silent heart attacks tend to be more common in women, and symptoms may be easily dismissed as stress or anxiety. In summary, heart attacks can occur without dramatic warning signs, and medical tests are often needed to detect them. Their risks are significant, so being aware and managing heart health proactively is important.