Does raspberry ketone actually work for weight loss, and what does the evidence say?

Does raspberry ketone actually work for weight loss, and what does the evidence say?
The weight-loss hype around raspberry ketone far exceeds the science. In vitro studies show it sensitizes rat adipocytes to norepinephrine, boosting lipolysis and adiponectin release, but human data is scarce. Only one human trial exists — 70 obese participants over 8 weeks, with 25 dropouts, and the ketone was combined with a 500-calorie diet and exercise, making it impossible to isolate its effect. Animal studies used doses roughly 100 times the recommended human intake, raising safety concerns. The name creates confusion with ketone bodies from ketogenic diets, but raspberry ketone is a phenolic compound, not a fuel source. The Japanese study often cited, involving 1,074 women taking 200 mg daily for three weeks, reported dramatic fat loss, but lacks peer-reviewed rigor and has not been replicated.