The number of overweight people in Aylesbury Vale is above the national average, according to new government figures.
A total of 64.5% of adults in the district are classed as overweight, with the national average for England being 63.8%.
People are classed as overweight in the stats if they have a body mass index of 25 or over – a figure between 18.5 and 24.9 is deemed healthy for an adult.
The Vale’s fatest neighbour is Milton Keynes with 72.5% overweight.
The figure for Wycombe district is 66.3%; Chiltern 60.5%, Dacorum 64.4% and South Oxfordshire 60.5%.
Copeland in West Cumbria is the fattest local authority area in England, with 75.9% of its population classed as overweight.
The thinnest local authority area was Kensington and Chelsea in London (45.9%).
Professor Kevin Fenton, director of health and wellbeing at Public Health England said: “Local authorities are ideally placed to develop co-ordinated action across their departments, services and partner organisations to tackle overweight and obesity in the local population. Many local authorities are already working hard to reduce obesity levels and these new data will help all local areas monitor their progress in tackling these longstanding problems.
“Public Health England is committed to supporting local government and the local NHS.
“People who are overweight or obese have an increased risk of developing type 2 diabetes, heart disease and certain cancers. Excess weight can also affect self-esteem and mental health. Overall health problems associated with being overweight or obese cost the NHS over £5 billion each year.
“There is no silver bullet to reducing obesity; it is a complex issue that requires action at individual, family, local and national levels. We can all play our part in this by eating a healthy balanced diet and being more active.”
The figures are based on adjusted, self-reported height and weight measurements collected via questions in the Active People Survey by Sport England since January 2012.