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Doctor insights on: Causes Of Exercise Intolerance

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What are the causes of exercise intolerance, and how does one acquire the disease?

What are the causes of exercise intolerance, and how does one acquire the disease?

Could be serious: A severe drop in your ability to exercise should be evaluated by a doctor. Although it could be as minor as a cold, or just overtraining, it could be an early sign of a serious heart or lung condition. ...Read more

Dr. Heidi Fowler
5,044 doctors shared insights

Exercise Or Physical Activity (Definition)

Exercise is a physical activity that is completed to maintain or improve health. Benefits of exercise include weight maintenance, improving mood, increasing energy, preventing or controlling chronic diseases, promoting better sleeping, and improving sex life and libido. ...Read more


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What causes exercise intolerance?

What causes exercise intolerance?

Many things: Hormonal problems, heart related conditions, lung related conditions, low blood counts(anemia) ... just to name a few things ! ...Read more

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What could cause exercise intolerance in a thin 17 year-old?

What could cause exercise intolerance in a thin 17 year-old?

Probably a medical c: Probably a medical cause. Depending on other factors, anemia may be a root cause. The bottom line is that this 17 year old needs to be seen soon. ...Read more

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Can being underweight cause tiredness and exercise intolerance?

Can being underweight cause tiredness and exercise intolerance?

See below: Yes: Underweight might be secondary to or symptomatic of an underlying disease. Unexplained weight loss needs evaluation asap. Severely underweight individuals may have poor physical stamina and a weak immune system, leaving one open to infection. Malnutrition due to poor/inadeq intake, genetics, underlying mental or physical disease need to be ruled out. ...Read more

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Can being underweight cause fatigue or exercise intolerance?

Can being underweight cause fatigue or exercise intolerance?

Yes: An individual needs enough energy stores during exercise to avoid fatigue or cramps. The body preferentially burns simple and complex carbohydrates first, then protein, then fat. If you don't have enough carbohydrate energy stores then protein (muscle) is broken down and then fat. The caveat is that some well trained underweight people don't have a problem but they have done extensive training. ...Read more

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Stress test stated moderate to severe ischemia anterior/apical. Heart cath says stress test false p,no blocks,but mild elevated EDP/LBBB. Is this causing dyspnea and exercise intolerance? Help?

Stress test stated moderate to severe ischemia anterior/apical.  Heart cath says stress test false p,no blocks,but mild elevated EDP/LBBB.  Is this causing dyspnea and exercise intolerance?  Help?

Yes: Elevated EDP indicates left ventricular dysfunction. You did not report what your ejection fraction (EF) is - it's crucial. Your EDP may be elevated from systolic and/or diastolic dysfunction. Moreover, LBBB causes dys-synchrony which further compromises LV function. Both abnormalities you list will result in impaired functional capacity manifested as exercise intolerance. ...Read more

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Can my anxiety and depression problems cause me to have exercise intolerance? How?

Can my anxiety and depression problems cause me to have exercise intolerance? How?

Depression can: Drain your energy and lead to lack of motivation. Anxiety can exert energy - eventually leaving you exhausted. However, - stay physically active because exercise is a great antidote to both anxiety ; depression. Take care. ...Read more

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Does low testosterone cause penis shrinkage and exercise intolerance ?

Does low testosterone cause penis shrinkage and exercise intolerance ?

Possibly: A truly low level can have those effects but there is much over-diagnosing of "low T". It should be measured in the early morning hours and repeated at least once. Only truly low levels warrant replacement hormone. There is a potential for serious side effects. ...Read more

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Can a Vitamin D deficiency cause muscle weakness, shakiness and exercise intolerance? I have low vitamin D,I'm being treated, on week 2, feel awful

Can a Vitamin D deficiency cause muscle weakness, shakiness and exercise intolerance? I have low vitamin D,I'm being treated, on week 2, feel awful

Severe vitamin D def: May cause Adults to experience "bone pain" as well as muscle weakness. There is no clear pattern of symptoms. In fact many people remain asymptomatic despite low levels. But here are the more common symptoms: Fatigue, General muscle pain and weakness, Muscle cramps, Joint pain, Chronic pain, Weight gain, High blood pressure, Restless sleep, Poor concentration, and Headaches. ...Read more

Dr. Sanjiv Kaul
70 doctors shared insights

Exercise Intolerance (Definition)

Exercise intolerance is a clinical finding in which a person is unable to exert his or herself physically for as long or as intensely as would be considered normal for the person's age. Exertion may be limited by shortness of ...Read more