Obesity puts people at risk for a whole host of conditions, including Type 2 diabetes, high blood pressure and sleep problems. But is obesity itself a disease?
Doctors are divided on the issue. Some say obesity is indeed a disease, with causes beyond eating too much and exercising too little, and consequences that harm the body like any medical condition. In addition, they say referring to obesity as a disease would improve care for patients, and ensure treatments are covered by insurance plans.
Others argue obesity is a risk factor for health problems, but not a disease itself. They say calling obesity a disease would stigmatize a huge population, and categorize some people as "sick" who actually may be healthy.
https://www.livescience.com/21222-obesity-disease-debate.html