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In a trial, some participants were asked to reduce their calorie intake by 25 per cent every day. After two years, they showed signs of slowed biological ageing in one test, but not in others

Does restricting calories slow down ageing? We simply don't know

9 February 2023

A test based on blood biomarkers suggests that calorie restriction slightly slows ageing, but the jury is out on whether the dieting strategy really works
Countries such as the UK, Mexico and South Africa have a tax on sugary drinks

Taxing sugary drinks may not cut obesity as much as headlines claim

27 January 2023

A study has suggested that the UK’s 2018 sugar tax prevents 5000 cases of obesity among 10 to 11-year-old girls in England every year, but the picture may be rather more complicated than that
Olive oil being poured onto a salad containing tomatoes, olives and various green leaves

Mediterranean diet is still good for you but only if you’re rich

15 June 2018

A landmark study that touted the benefits of the Mediterranean diet has been retracted, but eating more fresh fish and veg is still good for you, if you can afford it

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