AMA Reaffirms Obesity as a Disease—But Not All Doctors Agree

The American Medical Association (AMA) has confirmed obesity as a disease with complex causes. This decision, reaffirmed in 2023, highlights genetic, metabolic, and behavioural factors behind excessive body fat. Yet, not all medical professionals agree with this classification. Obesity involves an abnormal buildup of adipose tissue, which can affect the body in multiple ways. While it raises the risk of conditions like heart disease and diabetes, not everyone with obesity experiences health problems.

Doctors often assess obesity using body mass index (BMI) and waist measurements. However, critics argue these methods lack consistency and clear diagnostic standards. Some experts, particularly in the UK, remain sceptical about labelling obesity as a disease.

Major organisations, including the Centers for Disease Control and Prevention (CDC), already treat obesity as a serious chronic condition. Despite ongoing debate, the AMA’s stance reinforces its recognition as a medical issue rather than just a lifestyle concern. The AMA’s classification aims to shift how obesity is managed and perceived. With leading health bodies supporting this view, the focus may turn to better prevention and treatment. Still, disagreements persist over how to define and measure the condition.