Why do I get breathless while climbing stairs?

I am looking for clear information about shortness of breath and heart disease. Why do I get breathless while climbing stairs?

Why do I get breathless while climbing stairs is a common cardiology question. The answer depends on your age, symptoms, medical history, medicines and overall cardiovascular risk. In general, shortness of breath and heart disease should be interpreted in context rather than from one symptom, reading or test result alone. Common causes range from temporary or non-cardiac factors to conditions that need medical treatment, so persistent or recurrent symptoms deserve proper assessment. Keeping a record of when symptoms occur, their duration, pulse or blood-pressure readings, triggers, associated symptoms and current medicines can help a clinician decide what evaluation is appropriate. Risk factors such as smoking, diabetes, high LDL cholesterol, hypertension, kidney disease and a family history of premature cardiovascular disease also matter. Arrange medical review if symptoms are new, recurrent, worsening, occur with exercise, or are associated with fainting, significant breathlessness or chest discomfort. For people searching for information about shortness of breath and heart disease, heart health, cardiology symptoms, heart disease prevention and cardiac tests, the safest approach is an individualized assessment rather than self-diagnosis from internet information. This information is educational and does not replace advice from a qualified doctor or cardiologist.