Green coffee bean extract is a popular ingredient found in dietary supplement products marketed for various health benefits, especially weight loss. Green coffee beans are the raw, unroasted seeds or “beans” of the Coffea plant. Similar to your morning cup of coffee, they contain caffeine, as well as a chemical called chlorogenic acid, a natural antioxidant compound. The roasting process used for coffee actually destroys chlorogenic acid, so the unroasted beans are used for extracts in dietary supplement products. Green coffee bean extract has been touted as a “miracle weight loss” product and is found in thousands of dietary supplements marketed for weight loss.

There isn’t enough evidence to support the use of green coffee bean for weight loss.

Some of the latest research suggests that green coffee bean extract containing chlorgenic acid might help reduce body weight, body-mass index (BMI), and waist circumference. However, the studies are small in sample size, mostly of poor quality, and only conducted over a short term (up to 12 weeks). More high-quality and long-term studies are needed to confirm if green coffee bean extract can help you meet your goals for weight loss. In addition, the quality of some commercial green coffee bean extract products is questionable, as a recent analysis showed that some products contained less chlorogenic acid than was listed on the product labels.

Can green coffee bean negatively impact my health?

Green coffee bean extract appears to be well-tolerated in small amounts, short-term. A few minor side effects such as headache, nausea, and urinary-tract infection have been reported. The safety of its long-term use is unknown.

The bottom line

Dietary supplements with green coffee bean extract are commonly promoted for weight loss, but there isn’t enough evidence to confirm such claims, so they might not help Military Service Members meet their overall health goals.  In fact, the Federal Trade Commission (FTC) has successfully charged one company for using deceptive claims to market a green coffee bean supplement for weight loss. You can read more about this in FTC’s Press Release. And remember to check the label of any product you’re considering for weight loss to see if it has been evaluated by an independent, third party organization.

 

Updated 15 January 2021

References

Asbaghi, O., Sadeghian, M., Rahmani, S., Mardani, M., Khodadost, M., Maleki, V., . . . Sadeghi, O. (2020). The effect of green coffee extract supplementation on anthropometric measures in adults: A comprehensive systematic review and dose-response meta-analysis of randomized clinical trials. Complementary Therapies in Medicine, 51, Article 102424. doi:10.1016/j.ctim.2020.102424

Gorji, Z., Varkaneh, H. K., talaei, S., Nazary-Vannani, A., Clark, C. C. T., Fatahi, S., . . . Zhang, Y. (2019). The effect of green-coffee extract supplementation on obesity: A systematic review and dose-response meta-analysis of randomized controlled trials. Phytomedicine, 63, Article 153018. doi:10.1016/j.phymed.2019.153018

Meng, S., Cao, J., Feng, Q., Peng, J., & Hu, Y. (2013). Roles of chlorogenic acid on regulating glucose and lipids metabolism: A review. Evidence-Based Complementary and Alternative Medicine, 2013, 1–11. doi:10.1155/2013/801457

Onakpoya, I., Terry, R., & Ernst, E. (2011). The use of green coffee extract as a weight loss supplement: A systematic review and meta-analysis of randomised clinical trials. Gastroenterology Research and Practice, 2011, 1–6. doi:10.1155/2011/382852

Revuelta-Iniesta, R., & Al-Dujaili, E. A. S. (2014). Consumption of green coffee reduces blood pressure and body composition by influencing 11β-hsd1 enzyme activity in healthy individuals: A pilot crossover study using green and black coffee. BioMed Research International, 2014, 1–9. doi:10.1155/2014/482704

Ríos-Hoyo, A., & Gutiérrez-Salmeán, G. (2016). New dietary supplements for obesity: What we currently know. Current Obesity Reports, 5(2), 262–270. doi:10.1007/s13679-016-0214-y

Stohs, S. J., Kaats, G. R., & Preuss, H. G. (2016). Safety and efficacy of banaba–Moringa oleifera–green coffee bean extracts and vitamin D3 in a sustained release weight management supplement. Phytotherapy Research, 30(4), 681–688. doi:10.1002/ptr.5577

Vinson, J. A., Chen, X., & Garver, D. D. (2019). Determination of total chlorogenic acids in commercial green coffee extracts. Journal of Medicinal Food, 22(3), 314–320. doi:10.1089/jmf.2018.0039