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Raspberry ketone is an aromatic component present in raspberries and other fruits. It has a lipolytic activity - causing fat breakdown.
Studies have shown that, compared to controls, raspberry ketone decreased the amount of fat in the liver and visceral adipose (abdominal fat) tissues of mice. It also significantly increased norepinephrine induced decomposition of fat.
Tests with raspberry ketone in vitro cells found that they showed greater evidence of breakdown and higher secretion fo adiponectin, a protein used by the body to regulate metabolism when compared to controls. Higher levels are associated with fewer fat stores.
The effect of raspberry ketone on enery metabolism was also examined by measuring metabolic markers in brown fat tissue, a special kind of fat thtat generates heat in a process called thermogenesis. These results reportedly indicate that raspberry ketone activates the brown fat thermogenesis and enhances energy metabolism.
Note that results are improved when complimented by appropriate diet and exercise. Not recommended for children and pregnant or nursing women.