Chief Editorial Staff at Medlife is a team of experts presenting health-related articles in Medlife Blog. © Healthline Media UK Ltd, Brighton, UK, a Red Ventures Company. In addition, it may act directly on the brain to suppress appetite. It may also increase metabolic rate, helping burn off kilojoules faster and act as a diuretic, promoting urine production. However, studies have tended to use combinations of herbs, so there is uncertainty about guarana’s exact role as a weight-reduction agent. However, there have been very few human studies of guarana.
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