STAT+: How much weight loss is too much? Pharma is pushing the limit with new obesity drugs
STAT
FEBRUARY 20, 2025
In ongoing trials of Eli Lilly’s next-generation obesity drug, several trial participants are running into an issue they never expected: They are losing too much weight. One participant lost 22% of her weight in nine months — substantially faster than the rate seen with approved GLP-1 drugs like Wegovy or Zepbound. Her weight dropped so much that researchers reduced her dose of the treatment, called retatrutide.
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