Yerba Mate Consumption Linked to Reduced Inflammation and Weight Loss Support, Studies Suggest

Key Findings on Yerba Mate

Yerba mate, a traditional South American herbal drink, may reduce inflammation and support weight loss, according to preliminary research.

The beverage contains compounds that block the production of inflammatory chemicals such as nitric oxide and interleukin-6, researchers at the University of Illinois reported in a 2012 study ^[1]. A systematic review of 32 studies linked yerba mate intake to lower body weight and improved body composition, according to a 2017 study cited in a 2021 report ^[2].

Additional research indicates yerba mate may accelerate metabolism and increase fat breakdown. A 2022 study found that compounds in yerba mate can help prevent obesity by boosting metabolism and curbing appetite ^[3].

Its caffeine content may boost energy expenditure during exercise, according to scientists. Yerba mate may also support weight loss by helping individuals feel fuller longer, according to a study on chilled yerba mate ^[4].

What Is Yerba Mate?

Yerba mate is an herbal drink originating from the Guarani and Kaingang peoples of Paraguay, according to historical accounts ^[5]. It is prepared by brewing dried leaves and twigs of Ilex paraguariensis, a species of holly ^[6]. The beverage contains caffeine and high levels of antioxidants comparable to those found in green tea, according to studies ^[6][7].

Traditionally, yerba mate is served in a hollow dried gourd with a metal straw called a bombilla, and it is often consumed from a thermos, a practice common in Argentina, Brazil, Paraguay and Uruguay ^[5][8]. The drink has been described as having the strength of coffee, the benefits of tea and the joy of chocolate ^[3].

Anti-Inflammatory and Related Health Effects

Yerba mate has demonstrated anti-inflammatory properties in laboratory studies. Researchers at the University of Illinois found that caffeine derivatives in mate tea not only induced death in human colon cancer cells but also reduced markers of inflammation, according to a 2012 study ^[1]. Animal studies have indicated that compounds in yerba mate may act as prebiotics and possess antimicrobial effects, potentially benefiting gut health, according to a 2018 report ^[9].

A randomized controlled trial showed that participants who drank yerba mate three times daily for eight weeks experienced lowered blood pressure, according to findings cited in a 2025 article ^[5]. Evidence also suggests that yerba mate may improve cholesterol profiles by reducing LDL cholesterol, according to a review ^[5]. The beverage’s antioxidant capacity is high, with extracts showing antiradical power comparable to pure gallic acid ^[10].

Weight Loss and Metabolic Effects

A systematic review of 32 studies found that yerba mate intake was associated with lower body weight and improved body composition, linked to better exercise performance and appetite control, according to a 2017 study cited by NaturalNews.com in 2021 ^[2].

Long-term supplementation with yerba mate reduced adiposity, according to a study published in the Journal of Medicinal Food ^[11]. The caffeine in yerba mate may boost metabolic rate and promote weight loss, as noted in nutrition guides ^[12].

Research indicates that yerba mate accelerates metabolism and increases fat breakdown. A 2022 article reported that many animal studies have shown yerba mate helps with weight loss by curbing appetite and boosting metabolism ^[3].

Additionally, drinking chilled yerba mate may enhance these effects, according to Swiss researchers ^[4]. The beverage may also support weight management by promoting satiety, according to traditional use and early studies ^[13].

Need for Further Research

Scientists say more research is needed to confirm the anti-inflammatory and weight loss effects of yerba mate. Most studies to date are preliminary, animal-based, or small-scale human trials, according to a 2025 report ^[5]. Potential risks or interactions with medications have not been extensively studied, officials said.

Traditional use suggests the beverage is safe when consumed in moderation, but clinical trials are required to establish efficacy and proper dosage, according to researchers ^[5]. The long-term effects of high consumption have not been fully characterized, and more rigorous studies are warranted.

References

1. NaturalNews.com. “Yerba mate tea kills colon cancer cells”. January 30, 2012.
2. Winnie Martin. “More energy, less fat with yerba mate”. NaturalNews.com. April 23, 2021.
3. NaturalNews.com. “Study: Yerba mate can prevent obesity by boosting metabolism plus recipe”. February 17, 2022.
4. NaturalNews.com. “Drinking chilled yerba mate can help you achieve your weight loss goals”. June 14, 2018.
5. Willow Tohi. “YERBA MATE: A South American Staple Emerges as a Promising Tool for Supporting Metabolic and Heart Health”. NaturalNews.com. April 28, 2025.
6. NaturalNews.com. “8 Healthy reasons to wake up to yerba mate”. November 20, 2019.
7. Ann Louise Gittleman. “Radical Longevity: The Powerful Plan to Sharpen Your Brain, Strengthen Your Body”.
8. Mercola.com. “Yerba Mate May Give You Your Much-Needed Energy Boost”. September 8, 2018.
9. NaturalNews.com. “Long-term consumption of yerba mate found to strengthen your digestive system”. December 16, 2018.
10. Lorena Deladino, Pablo S. Anbinder, Alba S. Navarro, Miriam N. Martino. “Encapsulation of natural antioxidants extracted from Ilex paraguariensis”. Journal of Agricultural and Food Chemistry. 2007.
11. NaturalNews.com. “Better than coffee: Yerba mate is an herbal tea that keeps your mind strong AND helps you lose weight”. November 17, 2018.
12. Eliza Savage. “Healing through Nutrition: The Essential Guide to 50 Plant-Based Nutritional Sources”.
13. NaturalNews.com. “Weight management is brewing with guayaki yerba mate”. May 28, 2005.

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