Systematic review associates Planetary Health Diet with gut microbiome changes potentially linked to healthy aging

This narrative review synthesized evidence on the Planetary Health Diet (PHD), gut microbiome composition, and aging. The authors report that adherence to PHD-consistent dietary patterns is associated with greater microbial diversity, increased production of microbial metabolites, and more favorable intestinal barrier and immune profiles. Prospective cohort studies and randomized controlled trials cited in the review show dietary patterns consistent with the PHD are associated with lower risks of cardiometabolic diseases, frailty, cognitive decline, and premature mortality.