Conversation: The conversation between human and AI assistant.
[|Human|] Hi, Im 48 and have been running for years-33min in 10km and 15min in 21km when I was in my thirties and now over the last two years I find it difficult to breathe after two or three km, running at 3.30 345 etc and believe me my training is pretty good but theres something in competing which I cant fathom.
[|AI|]  Hi thanks for contacting Chat Doctor... Here your physical examination necessary including auscultation also. ... First investigate with your CBC to rule out anemia .... If hemoglobin level is low .... In anemia tissue can't get enough oxygen when exertion done .... So correct it if present with tablet or injections.... Second measure your blood pressure and rule out cardiac causes by ECG or Echo. If needed treadmill test also done. . If heart failure or any other cardiac disease present treated accordingly ...... If still cause not clear chest x-ray done . Consult pulmonologist and discuss all these .... Take care....