A UK study suggests that limited sugar exposure during the first 1,000 days may lower the likelihood of developing anxiety later in life, highlighting the long-lasting impact of early nutrition on brain health.
A new UK study suggests that sugar exposure in the earliest stages of life may shape mental health outcomes decades later. Researchers at the University of Surrey analysed health data from more than 46,000 people born in Britain during the post-war sugar rationing period, when supplies were tightly limited by the government. Their findings, published in Translational Psychiatry, point to a possible link between lower sugar exposure in the womb and in the first two years of life and a reduced risk of anxiety in adulthood.
The study focused on people born between 1951 and 1956 and compared those who had lived through longer and shorter periods of rationing. According to the UK Biobank publication on the work, people exposed to sugar limits during their first 1,000 days were less likely to develop anxiety and depression later on, and they also showed a lower preference for sweet foods. The association appeared strongest for anxiety rather than depression, suggesting that very early nutrition may have a particularly important influence on stress-related conditions.
The researchers also examined brain scans from about 6,000 participants to see whether there was any physical sign of the difference in early sugar exposure. They reported variation in the volume of grey matter, the brain tissue that contains many of the cells involved in processing information, depending on how much sugar people had been exposed to early in life. A separate paper in Molecular Psychiatry reached a similar conclusion, reporting that sugar rationing in the first 1,000 days was linked with a lower risk of both anxiety and depression in adulthood.
The findings do not prove that sugar itself directly causes later mental health problems, but they add to a growing body of evidence that early diet may have long-lasting effects on the brain and behaviour. That view is supported by earlier research, including a meta-analysis in the Journal of Affective Disorders which found higher intake of sugar-sweetened drinks was associated with a greater risk of depression. Taken together, the studies suggest that what children consume in the earliest stages of development may matter well beyond childhood.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
