Some research I saw several years ago suggested that if an obese person had a healthy diet and was physically active their health and life expectancy were no different from people who were not obese.
I speak with feeling, DD is obese, has been since birth, she was born with a big round tummy. I worried about it with health visitors and diet advisors when she was a child and tried not to visibly worry about it when she was a teenager. She has always been very active. When she was at school someone once said to her, 'you eat very little lunch and never go to the tuck shop and you are always swimming and playing tennis, why are you so fat?' Her reply was 'I do not know I just am'.
It is possible there is a genetic element through her father's maternal line. Her mother was one of a large family and we can trace in each generation for at least four generations one or two members with her particular shape and weight pattern. DH also struggles to keep his weight within acceptable limits. I have never had any particular weight problem except around the menopause, which I dealt with.
DH is in her mid-40s, swims 8 - 10 miles a week, does a couple of hours in the gym and has no medical problems of any kind, blood pressure, blood sugar all well within normal limits for her age. We recently had a day in London, during which, according to an app on her phone we both walked 9 miles without any problem at all.
OIbesity is not a one size fits all problem. As goose says these headlines forget that being obese is a contributory factor rather than the cause, if it was the cause everyone who was overweight would have diabetes etc