Green tea extract improves gut health and lowers blood sugar: study

Benefits of green tea extract: A recent study in people with a group of risk factors for heart disease found that drinking green tea extract for four weeks can lower blood sugar and improve gut health by reducing inflammation and “leaky gut”. .

The results of the study have been published in the journal “Current Developments in Nutrition”. This study, the researchers say, is the first to examine whether green tea’s anti-inflammatory properties may have a preventive role against the health risks associated with metabolic syndrome, a condition that affects about one-third of Americans.

According to Richard Bruno, lead author of the study and professor of human nutrition at Ohio State University, “There is ample evidence that higher consumption of green tea is associated with healthy levels of cholesterol, glucose and triglycerides, but no studies have linked its benefits in the gut to these health factors.”

The clinical trial, which involved 40 people, followed a 2019 study that found improved gut health was linked to lower obesity and lower health risks in mice given supplements. of green tea.

Surprisingly, the new study found that green tea extract also reduced intestinal inflammation and permeability in healthy individuals, as well as blood sugar or glucose.

This suggests that lower blood sugar is linked to reduced leaky gut and gut inflammation, regardless of health status, Bruno said. “What this tells us is that within a month we are able to lower blood sugar in people with metabolic syndrome and in healthy people, and the drop in blood sugar appears to be related to the decrease leaky gut and decreased intestinal inflammation – regardless of health status.”

At least three of five risk factors for heart disease, diabetes and other health problems – excess abdominal fat, high blood pressure, low HDL cholesterol (good cholesterol), high fasting blood sugar levels and triglycerides, a form of blood fat – are present in people with metabolic syndrome.

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According to Bruno, the problematic thing about these risk variables that make up metabolic syndrome is that they often only have minor changes and do not yet require medication management, although they still pose a serious risk to health.

“Most doctors will initially recommend weight loss and exercise. Unfortunately, we know that most people cannot comply with lifestyle changes for a variety of reasons,” he said, adding “Our work aims to give people a new diet-based tool to help manage their risk of metabolic syndrome or reverse metabolic syndrome.”

For 28 days, 40 participants — 21 with metabolic syndrome and 19 healthy adults — consumed gummy candy containing green tea extract, which is rich in catechins, an anti-inflammatory agent. Five cups of green tea was the recommended daily intake. All participants in the double-blind randomized crossover trial took a placebo for an additional 28 days, followed by a month without taking any supplements.

During the placebo and green tea extract making phases of the study, participants were confirmed to have been on a diet low in polyphenols, which are natural antioxidants found in fruits, vegetables, teas and spices. As a result, any results could be attributed to the effects of green tea alone.

Following consumption of the green tea extract, all participants’ fasting blood sugar levels were significantly lower than they were after taking the placebo, according to the results. Research that found a decrease in pro-inflammatory proteins in fecal samples was used to establish that green tea treatment reduced gut inflammation in all volunteers. Researchers also found that green tea significantly reduced the permeability of participants’ small intestines using a method to measure sugar levels in urine samples.

A leaky gut, also known as leaky gut, allows gut bacteria and associated harmful chemicals to enter the bloodstream, causing chronic low-grade inflammation.

“Absorption of gut-derived products is thought to be a trigger for obesity and insulin resistance, which are at the heart of all cardiometabolic disorders,” Bruno said, adding “If we can improve gut integrity and reduce leaky gut, the thought is that we’ll be able to not only relieve the low-grade inflammation that triggers cardiometabolic disorders, but also reverse them.”

“We didn’t try to cure metabolic syndrome with a month-long study,” he said. “But based on what we know about the causative factors of metabolic syndrome, it’s possible that green tea works at least in part at the gut level to lessen the risk of developing it or reverse it if you have it. already have metabolic syndrome.”

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-PTC News

Rachel J. Bradford