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flag Gut bacteria in industrialized people are evolving rapidly to digest synthetic starches in processed foods, a UCLA study finds.

flag 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. flag 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. flag 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. flag While the exact mechanisms of DNA transfer remain unclear, the findings suggest diet plays a key role in shaping gut microbiomes. flag 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.

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