Wartime babies born at the evacuated quarters of the Westminster Hospital Maternity Department in Surrey, 14th August 1941. (George W. Hales/Fox Photos/Stringer/Hulton Archive/Getty Images)
It was January 1940, and the United Kingdom had a serious problem.German attacks on import ships were threatening to trigger extreme food shortages, effectively starving the nation into submission.Overnight, strict food rationing went into effect, limiting the amount of certain foods people could buy, including common staples like sugar.Decades and entire lifetimes later, the long-tail effect of that enforced sugar reduction during World War II appears to have dramatically boosted the health of an entire generation of wartime babies, research suggests.In a new paper published in PNAS, researchers analyzed health data from 64,761 people who were born in the UK between 1951–1956, sourcing their information from the UK Biobank study.Sugar rationing ended abruptly in September 1953, after which average consumption levels quickly doubled.By focusing on the 1951–1956 period straddling the cut-off, the researchers were able to compare the adult health of babies who spent their first 1,000 days (from conception to the age of two) under sugar rationing with babies who were born directly after and did not experience the limits. They also compared the relative exposure of babies who experienced more of the sugar-rationing period to those born a little later, but still before restrictions lifted. Cancer hazard ratios, tracked against progressive months of exposure to food rationing. The vertical dashed line separates babies conceived before rationing ended and those born after food restrictions were lifted. (Zhu & Zhang, PNAS, 2026)It's not the first time researchers have turned to this historical event and the unique scientific data it provides.Previous studies have shown the sugar-rationed babies face lower chronic disease risks, along with lower chances of developing Alzheimer's, and they seem to enjoy better cardiovascular health.But what about cancer risk?The new study – by health economists Chen Zhu from China Agricultural University and Weilong Zhang from the University of Cambridge – answers that question, showing significant reductions in cancer incidence for babies whose sugar intake was limited in early life.Though these babies and their parents didn't have to contend with modern-day advertising and stacked supermarket shelves enticing them with increasingly sweet foods, the findings are a window into how sugar (or lack thereof) impacts health.
