First of all, understand that BMI is meant to be used at the population level. At the individual level it's not very revealing. People who are especially tall, or who are unusually muscular, will register as overweight or obese on the BMI scale.
But in practice, being obese is rather like smoking or having a drinking habit. Sure,
some people will smoke and drink every day and live into their 80s or 90s without any health issues. There's always going to be a few outliers. But in practice, it rarely happens that way, and there's no way to deterministically predict exactly what effect a bad health habit will have on you. Overwhelmingly, your chances of being healthy are higher if you quit smoking and drinking. Likewise with obesity. Some obese people will be quite healthy. But more importantly, they would in all likelihood be
healthier if they were not obese, and the fact remains that if you have the choice between being obese and being of normal weight, if you are concerned with your health you should choose the latter.
What the original proponents of Health at Every Size were trying to argue is
absolutely not that it's healthy to be obese, but that the typical approach to weight control, is misguided because it revolves around losing weight rather than making positive lifestyle changes. HAES does not mean "You are healthy no matter how much you weigh", it means "People of anybody type can choose to engage in healthier lifestyle habits." Obesity, according to HAES, is the product of lifestyle, and the only thing that can eliminate it is a permanent lifestyle change, ergo diets do not work because they are often temporary, and overweight people tend to focus more on losing weight rather than improving health.
gjonesy said:
How bout I just believe the science, I'm considered Gade 1 OBESE. but I'm right on the edge of over weight.
Conclusions and Relevance Relative to normal weight, both obesity (all grades) and grades 2 and 3 obesity were associated with significantly higher all-cause mortality. Grade 1 obesity overall was not associated with higher mortality, and overweight was associated with significantly lower all-cause mortality. The use of predefined standard BMI groupings can facilitate between-study comparisons.
Being overweight does not cause health problems in and of itself, the things that make a person overweight (restricted food choices, sedentary lifestyle, or untreated mental or hormonal issues) cause health problems. Being only slightly obese may not predispose you towards major diseases, but overall, you would likely be healthier if you resolved the underlying problems that led to that obesity.
As for being overweight associated with lower mortality, I'm going to need to see a source for that.