My wife lost a hundred pounds via bariatric surgery; resting heart rate dropped by 20, cholesterol dropped into normal range, knee and hip pain disappeared, and it even helped the chronic migraine substantially.
We've got plenty of clear evidence that being significantly overweight has health impacts.
Yup. On a much lesser note, when I lost 10lbs I noticed acid reflux symptoms disappear and blood pressure was lowered. For someone that is borderline on need of medication, the doc basically said lose some weight and these issues could go away (for some time). Its incentive enough for me to keep losing so I can push off the major diseases until much later in life or never.
We've got plenty of clear evidence that being significantly overweight has health impacts.