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Doctor insights on: Obesity And Lung Capacity

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What effects does obesity have on the lungs?

What effects does obesity have on the lungs?

Breathing: Obesity can cause obesity hypoventilation syndrome, or Pickwickian syndrome, which includes obesity, daytime sleepiness and a red face. ...Read more

Dr. Quang Nguyen
4,506 doctors shared insights

Obesity (Definition)

The definition started with Louis Israel Dublin, chief statistician of the Metropolitan life insurance company, in the early 1940s, as a BMI >25 (definitely >30) for people in their 20's based on retrospective observational life insurance data of the age at which people died later in life. This was subsequently adopted by the medical disease industry. However, BMI is ...Read more


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Anyone know anything about the lungs and how obesity can cause asthma?

Anyone know anything about the lungs and how obesity can cause asthma?

Lots of research: There is a lot of research going on about this topic actually. One of the things that is very common is that as abdominal and chest girth become more of an issue, stomach contents can get pushed up into the esophagus and cause reflux. That reflux material and gas can actually wash down into the lungs creating bad reaction and asthma attack. ...Read more

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Does a decrease in frc always mean restrictive lung disease? I am not obese. & my fvc was 95% of predicted fev1 was 96% fev1/fvc is 81% w/significant improve. W/bronchodilator, why was frc decreased?

Does a decrease in frc always mean restrictive lung disease? I am not obese. & my fvc was 95% of predicted fev1 was 96% fev1/fvc is 81% w/significant improve. W/bronchodilator, why was frc decreased?

Results are normal: There is a normal range for every test. It could be defined in different fashion & it varies wig test. Normal people could be in 80 to 120% range. More scientifically speaking a normal range should include about 90% of normal people.Your results are in normal range. Reduced FRC does not always mean restrictive lung disease. It could be related to technique. ...Read more

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Mum had breast cancer and dad had lung cancer,both passed away.what are my chances?can I get a full body cancer check? I am clinically obese.

Mum had breast cancer and dad had lung cancer,both passed away.what are my chances?can I get a full body cancer check? I am clinically obese.

Scan not neede: Unless Mums breast Ca was genetically induced thru BRACA any development of breast Ca would be environmental and the issue resolved with mammography. Lung cancer, especially is related to smoking is not passed down in a familiar manner. Basic medical exam yearly should suffice to define need for specific scans. ...Read more

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Cardiac ct, stres tst,holter, cardiac echo all normal.feel tired w air hunger when walk, pain left blade hand.mild reflux,clear lungs.obese.reason?

Cardiac ct, stres tst,holter, cardiac echo all normal.feel tired w air hunger when walk, pain left blade hand.mild reflux,clear lungs.obese.reason?

Exercise: It appears that all of your cardiac tests are normal, and that is very good. I do not see that you listed any lung evaluations, such as pulmonary function tests. This is a suggestion if you continue to have air hunger, as PFT can diagnose asthma or other lung conditions. This may be a matter of being out of shape because of your being overweight. See your doctor for an individualized exercise RX ...Read more

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Is lung capacity at 53% dangerous?

Is lung capacity at 53% dangerous?

Need to find out why: During a pulmonary function test, there are typically three measurements taken. First, how well the air "moves" in and out of the lungs. Copd, asthma, bronchitis, etc are things that would cause it to drop. Second, the efficiency of oxygen transfer is measured, the diffusion. Last, the lung sizes are measured. Again, which value is down and why its down is the most important thing to find. ...Read more

Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more