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Drinking 4 cups of tea a day can reduce the risk of type 2 diabetes. News Jani

Drinking 4 cups of tea a day can reduce the risk of type 2 diabetes.


According to the World Health Organization, approximately 422 million people worldwide live with diabetes. The most common type is type 2 diabetes, which occurs when the body cannot make enough insulin or becomes resistant to insulin and cannot absorb insulin easily from the blood.

Some studies have found that consumption of tea and coffee is associated with a reduction in all-cause mortality. Other research shows that daily green tea consumption is associated with a lower risk of type 2 diabetes and a lower risk of all-cause mortality in people with diabetes.

Further studies on the effects of tea and diet on diabetes risk in larger populations may inform preventive care strategies for diabetes.

Recently, researchers conducted a meta-analysis of 19 pooled studies from eight countries to investigate the effects of black, green, and oolong tea consumption on the risk of type 2 diabetes.

They found that drinking 4 or more cups of tea per day may reduce the risk of diabetes.

Dr. Kashif M. Munir, associate professor of medicine at the University of Maryland Center for Diabetes and Endocrinology, who was not involved in the study, said, “Drinking tea does not appear to be harmful and may have a small benefit in reducing diabetes risk. Is.” , told Medical News Today, “Other foods high in polyphenols show similar effects.”

Meta-analysis presented at the annual meeting of the European Association for the Study of Diabetes in Stockholm, Sweden.

How many cups of tea?

For the study, researchers analyzed data from 5,199 adult participants in the China Health and Nutrition Survey. Participants did not have diabetes at the start of the study and were followed from 1997 to 2009. Their tea consumption was collected through questionnaires.

Overall, 45.76% of participants reported drinking tea, and 10.04% of the cohort developed type 2 diabetes during the study period.

Read more: Over 3 million children face health risks in flood-ravaged Pakistan: UNICEF

After adjusting for factors including age, gender and lifestyle factors, the researchers found that tea drinkers had the same risk of type 2 diabetes as non-tea drinkers.

Next, the researchers conducted a systematic review of 19 combined studies with 1,076,311 participants that investigated the relationship between tea consumption and risk of type 2 diabetes.

They were able to explore associations between type 2 diabetes risk and consumption of different types of tea—including green tea, oolong tea, and black tea—tea drinking frequency, gender, and place of residence.

Researchers found that people who drank 1-3 cups of tea per day had a 4% lower risk of type 2 diabetes than non-drinkers.

People who drank at least four cups of tea per day, however, had a 17 percent lower risk of type 2 diabetes than non-tea drinkers.

The researchers noted that their results remained independent of tea type, gender and region of residence. This, they noted, suggests that the beneficial effects of tea on diabetes risk may be related to the amount consumed, as opposed to other factors.

How tea can reduce the risk of diabetes.

When asked how drinking tea can reduce the risk of type 2 diabetes, Dr Munir said:

“Tea contains food polyphenols, such as EGCG, which have been shown to reduce insulin resistance and improve endothelial function.[which is] important for regulating the immune response, blood clotting, and the dilation or constriction of blood vessels). These effects may have beneficial effects on glucose homeostasis and improve the risk of diabetes.

Other studies have found that green tea can lower blood sugar levels by increasing insulin production in rats. Meanwhile, black tea is known for its high levels of theoflavin, which has antioxidant and anti-inflammatory effects.

Black tea can prevent obesity, a risk factor for diabetes, by shifting the reliable source of white fat to brown fat, thereby aiding weight loss, blood glucose regulation, and fat metabolism. Gives

The researchers concluded that daily consumption of tea can reduce the risk of type 2 diabetes.

A few things to consider about tea

Asked about the study’s limitations, Professor Peter Clifton, associate professor of clinical and health sciences at the University of South Australia, who was not involved in the research, told MNT that because the study was epidemiological in nature, it So it can only shed light. Possible links.

He added that double-blind, randomized controlled trials of dried tea extract in capsules versus placebos would need to be monitored for several years to obtain definitive results.

“Prescribing drinking tea or drinking coffee as a lifestyle intervention will not work because people will not suddenly change their ingrained habits of not drinking tea. So, there is no reason to give it up but to pick it up.” There isn’t much evidence for that.” – Professor Peter Clifton

Dr. Munir added that early small-group studies did not show any benefit from tea consumption because large numbers of participants were often needed to observe small effects in larger populations.

“The meta-analysis included more than a million participants from 19 studies and showed benefits from high levels of tea consumption associated with a reduced risk of developing diabetes. Larger studies like this are often needed. To tease out a small benefit from a particular food,” he continued.

“However, the limitations are that we do not know whether diet is the cause or merely an association with lower rates of diabetes development and many biases may have interfered with the non-randomized study,” he concluded. .

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