A 20-year longitudinal study tracking 11,000 adults has found that those who consumed more than four servings of ultra-processed food per day showed cognitive decline equivalent to four years of accelerated ageing by their late fifties.

A 20-year longitudinal study tracking 11,000 adults has found that those who consumed more than four servings of ultra-processed food per day showed cognitive decline equivalent to four years of accelerated ageing by their late fifties.