55 yr old man tired all time not depressed active eats well. fthr died at 52 cardio myopthy, 62 yr old smoker brothr heart attk last week. worrisome?

Stress test: I am an advocate of stress and worry relief. I would recommend a consultation with a reputable cardiologist to put your mind at ease, even if no shortness of breath or chest pain with meals or exertion and no swelling of legs or waking up in the middle of the night short of breath. Fatigue has many causes. Please have your iron checked, for example.

Yes: hopefully you have seen your MD since onset of tiredness - if not do so. Need to assess the status of your cardiovascular system.. On the other hand this history can certainly evoke considerable anxiety which also can cause tiredness. May also be depressed without the mood of depression.

Consult MD: U have enough reason to consult an MD. The whole idea is prevent certain future illness by appropriate guided therapy. Good luck.

Sleep study (PSG): Most patients with Sleep Apnea are not aware of the problem despite being exhausted on awakening and they snore loudly. Father with cardiomyopathy is genetic predisposition and sign of OSA. To receive the best care, you should always first consult your primary care physician, and he/she might refer you to a proper specialist for your problem.