Raspberry ketones have been shown to increase metabolism output and increase levels of a hormone in the body called adiponectin. Adiponectin increases the rate at which the body burns fat and can help reduce appetite, some studies have shown that a combined use of raspberry ketones with a caffeine source, yielded greater weight loss and fat loss combined.
A raspberry ketone supplement is ideal in comparison to the real fruit, asyou would need to consume 90 pounds (41 kg) of raspberries to get the amount of raspberry ketones needed for a single benefical dose raspberry ketone. A kilogram (2.2 pounds) of whole raspberries only contains 1-4 mg of raspberry ketones. That would be too much sugar, as well. Supplementing has its benefits!