What Are Raspberry Ketones?
Raspberry ketone is a natural substance that gives red raspberries their powerful aroma. This substance is also found in small amounts in other fruits and berries, such as blackberries, cranberries and kiwis. It has a long history of use in cosmetics and has been added to soft drinks, ice cream and other processed foods as a flavoring.
As such, most people already eat small amounts of raspberry ketones — either from fruit or as a flavoring. Only recently did they became popular as a weight loss supplement. Even though the word “raspberry” may appeal to people, the supplement is not derived from raspberries.
Extracting raspberry ketones from raspberries is extraordinarily expensive because you need 90 pounds (41 kg) of raspberries to get a single dose. In fact, 2.2 pounds (1 kg) of whole raspberries only contains 1–4 mg of raspberry ketones. That’s 0.0001–0.0004% of the total weight. The raspberry ketones you find in supplements are synthetically manufactured and are not natural . The appeal of this product is also due to the word “ketone,” associated with low-carb diets — which force your body to burn fat and elevate blood levels of ketones. However, raspberry ketones have absolutely nothing to do with low-carb diets and will not have the same effects on your body.