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At what age does metabolism begin to slow? A surprising new discovery

According to a groundbreaking 2021 study in the journal *Science*, human metabolism does not significantly slow down during middle age, but remains stable between the ages of 20 and 60. This new research challenges the long-held belief that a person's metabolism takes a sharp downturn in their 30s or 40s, offering a clearer picture of **at what age does metabolism begin to slow**.