The British Government imposed sugar rationing in 1940, a measure that remained in force until 1953. Scientists leveraged this unique historical circumstance to examine how restricted sugar exposure during infancy and in the womb might shape long-term brain health across an entire generation. Participants who were exposed to sugar rationing both in utero and throughout their first year had a 21 per cent lower chance of receiving a dementia diagnosis. This means it can identify links between diet and dementia risk, but it cannot prove that eating less sugar directly prevents dementia." She noted that the Lancet Commission, regarded as one of the most thorough assessments of dementia risk, does not presently classify sugar consumption as an independent risk factor.