Weight Loss: Hibiscus tea is also beneficial for losing weight. If you consume food that is rich in carbohydrates, that means that it contains sugar and starch, so you are likely to gain weight. However, research studies have suggested that hibiscus extract lowers the absorption of starch and glucose and may help with weight loss. Hibiscus inhibits the production of amylase, which helps in the absorption of carbohydrates and starch, so drinking hibiscus tea prevents that absorption from occurring. Therefore, hibiscus tea is found in many weight loss products.