In the United Kingdom, obesity and a BMI of 30 to 35 has been found to reduce life expectancy by an average of three years, while a BMI of over 40 reduced longevity by eight to 10 years.
The Health Survey for England 2016 estimates that 26.2% of adults in England are obese and a further 35.2% are overweight but not obese.
Obesity is usually defined as having a body mass index (BMI) of 30 or above.
BMI between 25 and 30 is classified as 'overweight'.
Overweight and Obesity