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Hibiscus

Hibiscus is a plant known for its large and colorful flowers. Different varieties of hibiscus are used as herbal remedies all over the world.

In recent years, scientists have been studying the health benefits of hibiscus and the chemicals contained in this plant.

What is hibiscus used for?

Hibiscus is used to treat a range of health problems such as high blood pressure, high cholesterol and head lice.

There is some promising research suggesting that hibiscus may help to lower blood pressure. However, more studies are needed to confirm this. Some research suggests that hibiscus may be helpful in reducing cholesterol levels. One of these studies focused on people who suffered from metabolic syndrome. This condition is a collection of risk factors including obesity, high blood sugar levels and high blood pressure. Metabolic syndrome increases the risk of heart disease and diabetes. In this study, the use of a hibiscus extract in people suffering from metabolic syndrome was associated with a reduction in blood glucose, a reduction in total cholesterol, higher levels of 'good' HDL cholesterol and improved insulin sensitivity. However, there is not yet enough scientific data to recommend the use of hibiscus for this application. A small study tested different herbal preparations for the treatment of head lice. A mixture containing hibiscus and other plant extracts appeared to be effective. However, further research is needed here too. Some scientists are looking at hibiscus to see if it could be used as an antioxidant, but more research is needed before a conclusion can be drawn.

Dosage

An optimal dosage has not yet been established for any of the applications mentioned. As the quality and active ingredients of different supplements can vary greatly, it is difficult to define a standard dosage.

Can hibiscus be taken in the form of natural foods?

Hibiscus tea is a popular drink.

Risks and side effects

  • Side effects: Hibiscus can cause a drop in blood pressure and is also associated with dermatitis.
  • Risks: You should avoid hibiscus if you are allergic to plants of the Malvaceae family. Hibiscus should be used with caution if you suffer from high blood pressure. Not much is known about the safety of hibiscus during pregnancy and breastfeeding.
  • Interactions: Hibiscus tea may interfere with the effectiveness of some antimalarial drugs.

References

  1. Natural Standard Professional Monograph: "Hibiscus."
  2. Frank, T. Journal of the Science of Food and Agriculture, Aug. 15, 2012.
  3. Wahabi, H. Phytomedicine, February 2010.
  4. McKay, D. Journal of Nutrition, February 2010.
  5. Gurrola-Diaz, C. Phytomedicine, June 2010.
  6. National Institutes of Health: "What is metabolic syndrome?"
  7. Clemson Cooperative Extension: "Hibiscus."