Limiting sugar before the age of two is linked to a lower risk of dementia later in life, research suggests. A study based on almost 65,000 people from the UK found that sugar rationing may be linked to more than a fifth lower chance of dementia. They found people who experienced sugar rationing before birth and up to age one had a 21% lower risk of dementia compared with people born after sugar rationing. “This means it can identify links between diet and dementia risk, but it cannot prove that eating less sugar directly prevents dementia. “The Lancet Commission – one of the most comprehensive reviews of dementia risk – does not currently list sugar intake as a standalone risk factor.