“The bigger the changes made towards healthier dietary patterns, the larger the expected gains in life expectancy are,” the team explains in their published paper.

“Unsurprisingly, predicted gains in life expectancy are lower when the dietary change is initiated at older ages, but these remain substantial.”

People aged 70 years old could still extend their life expectancy by around 4 to 5 years if they made a sustained change to eating healthily, either in accordance with the Eatwell Guide or the ‘longevity diet’, the researchers found.

At 68 and 70 ourselves we plan to be extending our lives beyond 5 and have over the past years adapted our diet and supplements to ensure we’re eating as healthily as possible and still enjoying life

“This work is important as it demonstrates that its never too late to make small and sustained changes towards a healthier diet.”

Other studies before this have shown how various healthy eating patterns mirroring dietary guidelines are linked to a lower risk of early death among US citizens.

While this new analysis looks at the UK, expanding the geographical range of such studies, the same caveats apply as with any population-level data