Green tea, whether in the form of the drink or as an extract in supplement form, derives its benefits from the leaves of the Camellia sinensis plant. It is rich in a group of antioxidants called polyphenols, which are believed to provide a range of health benefits. In this article, we'll take a closer look at what polyphenols are, why a high polyphenol content is indicative of quality, what EGCG is, and the potential benefits of green tea extract as a supplement.
Polyphenols are a group of compounds found in plant foods, such as fruits, vegetables, and tea. They are a type of antioxidant that helps to protect the body against oxidative stress. Green tea extract is particularly rich in a group of polyphenols called catechins, with epigallocatechin gallate (EGCG) being the most abundant and well-studied.
The quality of green tea extract supplements is often measured by their polyphenol content. A high polyphenol content is typically indicative of a high-quality product, as it suggests that the supplement is made from high-quality tea leaves and contains a higher concentration of antioxidants. When shopping for green tea extract supplements, it's important to look for products that list the polyphenol content on the label.
EGCG is a specific type of catechin that is found in high concentrations in green tea extract. It is believed to be the most potent of all the catechins, and has been the focus of much research on the potential health benefits of green tea extract.
So what are some of the potential benefits of taking a green tea extract supplement? Here are a few:
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Antioxidant activity: As mentioned, green tea extract is rich in polyphenols, which are antioxidants that help to protect the body against oxidative stress, which can lead to cell damage.
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Brain health: Some studies have suggested that the catechins in green tea extract may have beneficial effects on brain function, such as improved memory and attention. EGCG in particular has been shown to increase the activity of certain neurotransmitters in the brain.
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Weight management: Green tea extract may help to support healthy weight management. Some studies have suggested that the catechins in green tea extract may help to increase metabolism and fat burning, while others have shown that green tea extract may help to reduce appetite.
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Heart health: Green tea extract may also be beneficial for heart health. Some studies have suggested that it may help to manage cholesterol levels and improve blood vessel function.