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Gut bacteria in industrialized people are evolving rapidly to digest synthetic starches in processed foods, a UCLA study finds.
Gut bacteria in industrialized populations are rapidly evolving to digest synthetic starches like maltodextrin, a common additive in ultra-processed foods since the 1960s, according to a UCLA study published in Nature.
Researchers found that gene variants enabling starch digestion have spread quickly through horizontal gene transfer, with distinct genetic adaptations observed between industrialized and non-industrialized groups.
The study, which analyzed nearly three dozen gut bacterial species, used a new statistical method to detect these "swept" gene regions, indicating strong evolutionary pressure from modern diets.
While the exact mechanisms of DNA transfer remain unclear, the findings suggest diet plays a key role in shaping gut microbiomes.
The research highlights potential health implications of ultra-processed foods and calls for further study into how eating habits influence microbial evolution and human well-being.
Las bacterias intestinales en las personas industrializadas están evolucionando rápidamente para digerir el almidón sintético en los alimentos procesados, según un estudio de la UCLA.