Raspberry ketone is a supplement that contains the aromatic compound ketone (4-(4-hydroxyphenyl) butan-2-one. The extracts of raspberry ketone that are commercially available are derived from the red raspberry (Rubus idaeus). Structurally, raspberry ketones are similar to capsaicin and synephrine, both of which are known to possess fat loss benefits because of their ability to activate the central nervous system. In rodents raspberry ketone has been shown to prevent elevations in body weight when the rodents are fed high fat diets. In rats, raspberry ketone also decreases the hepatic triglycerides caused by high fat diets. The reason for these effects may result from the ability of raspberry ketone to cause the activation of noradrenaline. Noradrenaline is able to cause a breakdown of adipose stored triglycerides and then facilitate this fat as a source of energy. Raspberry ketone may therefore be a suitable supplement for those wishing to lose body fat.
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