Yerba maté showed limited metabolic effects, with a signal in prediabetes
Blood-sugar markers improved in a subgroup, while pooled results did not show clear benefits for cholesterol, body size, or fasting glucose.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
In this abstract-based review, yerba maté showed possible benefits for selected blood-sugar markers in participants with prediabetes. Across the review, several other metabolic outcomes showed no statistically significant effect, including blood lipids and body-size measures. The abstract does not establish diabetes prevention or weight-loss effectiveness, and the subgroup findings need confirmation.
The abstract omits treatment duration, comparator details, and units for the reported blood-sugar effects. Adverse events are listed without frequencies or group comparisons, so their relative likelihood cannot be assessed.
The positive results were selective
Prediabetes results favored glucose after meals and other blood-sugar markers. Fasting glucose and insulin did not change significantly overall. These laboratory findings do not establish diabetes prevention, and the subgroup signal needs confirmation.
Uncertainty includes harms
Reported adverse events included irritation of mucous membranes, insomnia, a fast heartbeat, angina, headache, and digestive discomfort. The abstract does not explain how often these occurred or whether they differed between comparison groups.
The original publication
Yerba Maté and its impact on glycemic control and metabolic health: a systematic review and meta-analysis.
Li D, Yue L, Peng X et al.
Front Endocrinol (Lausanne) · 2025
- PubMed ID
- 41244043
- Record checked
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