The think tank’s new analysis suggests that differences in healthy years lived between affluent and deprived areas have widened.
It also concludes that the UK has the second-lowest healthy life expectancy of high-income countries, which includes those in western Europe, the Nordics, North America and Oceania.
The Health Foundation said the findings revealed a stark decline in the nation’s health and that this should be a wake-up call for policymakers.
Andrew Mooney, the think tank’s principal data analyst, said: “The UK has the highest levels of obesity in western Europe and there has been a surge in mental ill health, especially among young people.”
This had created “a significant economic cost, with poor health driving people out of the workforce and locking young people out of education, employment and training”, he added.
The Health Foundation analysed data from the Office for National Statistics going back to 2012-2014 and made international comparisons using World Health Organization data, covering both physical and mental health.
The authors argued that looking back over a decade revealed a trend that can be explained by many factors – including poor housing, obesity and the effects of deprivation – as well as the Covid pandemic.
They note that overall life expectancy had remained broadly stable but the number of healthy years people were forecast to live had declined.
In 2022-2024, men in England in the least deprived areas had a healthy life expectancy at birth of 69.2 years on average and 14.4 years of ill health, while women had a predicted average of 68.5 years of good health and 17.9 in ill health.
But in the most deprived areas it was just 49.8 healthy years and 23.4 in poor health for men, and 48.2 years of healthy life expectancy and 30.1 in ill health for women.
For both men and women, the gap in healthy life expectancy between wealthier and poorer areas has widened compared to the data for 2013-2015.