Ingredient Evidence

Grape seed extract is a supplement made from the seeds of wine grapes. Human studies are strongest for blood pressure and cholesterol, but the effects are small, results are mixed, and the studies are …

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Green tea extract is a concentrated preparation made from the leaves of Camellia sinensis, sold mostly as capsules or tablets. Human studies point to small effects on cholesterol, body weight and …

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Chromium is a trace mineral found in many foods and sold as a supplement, most often as chromium picolinate. Human trials have found small changes in blood sugar, body weight and some lab markers, but …

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