Yes morbid obesity (I am classed as that) can be bad for your health. Notice the word can. so can being underweight. So can eating the wrong foods or drinking alcohol or smoking or doing no exercise.
Morbid obesity is not the cause of illnesses like diabetes or heart disease but they do tend to go hand in hand as MOST NOT ALL morbidly obese people eat the wrong food, smoke and drink and do no exercise.
The point some are making is that not all morbidly obese people are lazy alcohol drinking, fag smoking junk food eating slobs. Some actually eat healthy, dont drink or smoke and work out as often as possible. These people are not at risk of these diseases anyore than anyone else.
As I said I am just classed as morbidly obese as I have great muscle tone which weighs heavier than fat and although am now only a size 14 I have huge boobs which also weigh a lot. However my heart is as good as an 18 year olds, my sugar levels are very low, my cohlesterol (sp) is on the low side and although I do have an illness (nothing to do with my weight by the way) which means exercise is harder I still manage to do more than the average person. The only reason I lost weigth is because I went through a period where all I could eat was rice pudding otherwise I would still be a size 18 and morbidly obese but fit and healthy.
Infact my old gym instructor was a size 24 and was fitter than anyone else I have ever known and used to run bloody marathons so again really fat but healthy