Evidence supporting the use of: Green Coffee
For the health condition: Weight Loss

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Green coffee, derived from unroasted coffee beans, has gained popularity as a weight loss supplement primarily due to its chlorogenic acid content, which is believed to influence metabolism and fat absorption. There is some scientific evidence supporting its use for weight loss, but the quality and consistency of this evidence are limited. A few small randomized controlled trials and meta-analyses have suggested that green coffee extract may result in modest weight loss in overweight individuals compared to placebo. These studies propose that chlorogenic acids may reduce the absorption of carbohydrates from the digestive tract, thereby lowering blood sugar and insulin spikes. However, the observed effects are generally small, and methodological weaknesses—such as short study durations, small sample sizes, and potential conflicts of interest—limit the reliability of these findings.

The most frequently cited meta-analysis, published in 2011 in the journal Gastroenterology Research and Practice, concluded that green coffee extract could promote weight loss, but also emphasized that more rigorous research is needed. Additionally, the European Food Safety Authority (EFSA) has stated that the evidence is insufficient to establish a cause-and-effect relationship between green coffee extract and weight loss.

In summary, while there is some scientific interest and limited evidence suggesting a potential benefit of green coffee for weight loss, the overall quality of evidence is low, and more robust, long-term studies are required to confirm its efficacy and safety.

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