Raspberry Ketones have been added to many different food supplements in recent times. They are a natural extract from the fruit, and are marketed as an effective tool for increasing the metabolism and promoting fat burning. Scientific studies into Raspberry ketones have linked the product, with an increase in lipolysis (the breaking down of fat cells). Thanks to this effect of the extract, it has become a popular supplement for body builders keen to reduce their body fat and increase lean definition. Raspberry ketones are a chemical compound found in the fruit that are responsible for the fruity smell and flavour. The chemical structure of raspberry ketones is closely related to a number of other extracts that are also used in promoting fat loss. Capsaicin, which is the ‘hot’ part of chilli peppers and synephrine both increase the metabolism, but have side effects such as irritating the stomach, which raspberry ketones do not. In scientific trials, raspberry ketones increased the production of norepineprine, which increases the temperature of the body causing an increase in the metabolic rate. Another effect of the supplement when it was examined in a study was that it reduced the body’s ability to synthesise dietary fat. Thanks to this double approach impeding the production of new fat cells in the body and increasing the base rate at which fat is burned, raspberry ketones are being seen as one of the best hopes for anyone who wants to reduce their body fat levels. Aside from the aesthetic benefits of reducing fat under the skin, a secondary benefit of this supplement is that fatty deposits in blood vessels can also be reduced due to the increased levels of norepineprine in the blood. Overall, thanks to its natural origins and lack of side effects, raspberry ketones are a product that can be safely used by almost anyone who wants to experience the potential fat reduction benefits of the supplement.