Study reveals massive social divide in obesity in England

The authors evaluated demographic information from electronic patient records and used the Body Mass Index (BMI) to calculate how widespread obesity is. BMI is a simple ratio of height to weight that serves as a rough classification of weight but says nothing about individual health.

A key finding: in socioeconomically highly disadvantaged neighborhoods, the obesity rate among women is significantly higher than in privileged areas. The differences were particularly large between the most and least disadvantaged groups, while middle social classes sometimes showed contrary patterns.

Causes rooted in living environments

Ethnic differences also play a major role, according to the study. Black women had the highest obesity rates in nearly all age and social groups, while men of Asian origin had the lowest. The study leadership emphasizes that these differences remain stable across several generations.

The research team attributes the high obesity rates in poor neighborhoods to structural factors. These include scarce availability of fresh, affordable food, denser building with fewer green spaces and playgrounds, as well as chronic stress and irregular working hours that make exercise and healthy eating more difficult.

For science, the insight is relevant that obesity is not purely an individual problem. "Unsere Ergebnisse zeigen, dass Lebensumfeld und Herkunft darüber mitentscheiden, wie wahrscheinlich Fettleibigkeit ist," said one of the researchers involved. The study is intended to help policymakers and the healthcare system intervene more precisely.

Reactions from politics and the healthcare system

In the United Kingdom, obesity has been recognized as a growing health problem for decades. The National Health Service (NHS) treats the consequences with stomach surgeries and lifestyle change programs. The British Heart Foundation has long called for stronger prevention, particularly for children from low-income families.

The authors demand that in the future, not only the weight of individual patients be examined, but that their living circumstances be consistently considered. Prevention must start in schools, neighborhoods, and social policy — for example, through a sugar tax, better sports programs, and regulation of advertising for unhealthy foods.

International collaboration and criticism

Among the international cooperation partners involved in the analysis are the Medical University of Innsbruck and its Institute of Clinical Epidemiology. Patrick Rockenschaub and Robert Fletcher are also part of the author team that published the findings in Lancet Diabetes & Endocrinology.

Critics point out that BMI does not fully reflect health and can have a stigmatizing effect. The study authors nevertheless consider BMI a useful tool for making distributions visible in large population groups.

For the coming years, the researchers are planning follow-up studies that specifically investigate the causes of regional differences. They hope their data will serve as a basis for national prevention programs that are more strongly tailored to disadvantaged neighborhoods.