Is Drinking Tea Good for Health – The Potential Benefits or Harms of Tea

Is Drinking Tea Good for Health

Welcome to this blog post “Is Drinking Tea Good for Health – The Potential Benefits or Harms of Tea.” Unlike coffee, tea doesn’t seem to have negative connotations in general the coffee often does.

I know a lot of people who think that tea is beneficial much more so than coffee that is until I hope the article we did on coffee.

Like with coffee there are a fairly large number of studies. That has looked at associations between tea and outcomes we might care about. So many studies were available that I was able to focus on systematic reviews and meta-analyses of studies exclusively.

As with coffee-tea also help to improve in various forms of liver disease. 9 prospective cohort studies 3 retrospective cohort studies and 4 cross-sectional studies including more than 800,000 participants have been analyzed together.

Only one of the cross-sectional studies though was conducted in the United States. That study showed that tea drinkers were less likely to have a patter cellular carcinoma liver steatosis, liver cirrhosis, and chronic liver disease.

Tea vs Coffee - Is Drinking Tea Good for Health

This confirmed the findings in a previous systematic review published in 2008. Tea also reduces a lower risk of depression as well.

A 2015 meta-analysis of 11 studies with almost 23,000 participants found that for every 3 cups of tea consumed per day the relative risk of depression decreased 37%.

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Tea was also associated with the reduction in the risk of stroke with drinkers of at least 3 cups a day. Having a 21% lower risk than those drinking less than a cup a day.

A more recent meta-analysis examined 22 prospective studies on more than 8,500 people and found that drinking three more cups of tea a day, help to reduce the risk of coronary heart disease 27%, cardiac death 26%, stroke 18%, total mortality 24%, cerebral infarction, 16%, and interest cerebral hemorrhage 21%.

Here is an article about Health Benefits of Turmeric Tea – 9 Reasons to Get Brewing for your need to help you.

A 2014 meta-analysis of 15 published studies including more than 545,000 disa pants found as with coffee. An inverse relationship between tea consumption and the risk of developing type 2 diabetes.

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For each additional two cups per day of tea consumed the risk of developing diabetes dropped 4.6%. Tea does not seem to be associated with the reduced risk of fracture though.

A 2014 meta-analysis of B15 studies including almost 200,000 participants could not detect a significant or convincing link between tea consumption and a lower risk of hip fracture.

Another meta-analysis that included studies of all fractures analyzed nine studies including 150,000 participants it also failed to find a link between tea consumption and a reduced risk of fracture.

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A systematic review from 2015 found that black tea did not reduce the risk of endometrial cancer. But then increasing green tea consumption by one cup a day could reduce the relative risk by 11%.

According to a meta-analysis of 2011 green tea but not black tea was associated with lower risks of prostate cancer. But only in less robust study designs, a 2013 meta-analysis could not find a significant association between tea consumption and the risk of glioma.

A more comprehensive study was even more equivocal about cancer prevention. A Cochrane systematic review examined all prospective controlled interventional and observational studies that looked at associations between green tea and the risk of cancer incidence or mortality.

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They found 51 studies containing more than 1.6 million participants. But only one was a randomized controlled trial result was conflicting Moreover, most of the studies were done in Asia. Where tea consumption is much higher than that in the United States.

Regardless the authors felt that there was insufficient evidence to give any firm recommendations a more recent study agrees. But these are all data from observational studies and as such, they can’t prove causality.

We’ve been burned many times before by assuming what we see as associations. And cohort studies will translate into causality and randomized controlled trials.

So everything I just said has to be taken with a grain of salt. Finally there seems to be less of a dose response than in the studies we saw with coffee.

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It often takes drinking three cups or more of tea a day to see positive relationships. There are some randomized controlled trials however which don’t have most of these limitations.

Green tea has been claimed to help people lose weight, enough people believe that 18 randomized controlled trials with 1945 participants can be reviewed.

Green Tea to Lose Weight

Half of these trials took place in Japan the only one took place in the United States. The sum total of evidence found the green tea produced a small. But non-significant weight loss and overweight and obese adults.

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It also didn’t help with the maintenance of weight loss previously achieved. Green tea catechins had no effect on HDL cholesterol triglyceride levels or C – reactive protein concentrations.

Two more meta-analyses confirmed these findings. But 11 randomized controlled trials including 821 patients found that green tea, black tea. And tea extracts can reduce other cardiovascular risk factors.

Both were found to reduce low-density lipoprotein an average of 0.5 mill moles per liter systolic blood pressure 2.3 millimeters of mercury and diastolic blood pressure 2.8 millimeters of mercury.

These results should be interpreted with caution however as they focus on risk factors and not necessarily outcomes. There were also few studies contributing to each of these findings. So the results may not stand up to further scrutiny or replication.

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At the end of all of this, I’m a little less impressed with this body of evidence than I was with coffee. I own that this is an interpretation through and others may disagree.

The lack of a dose-response in many of these trials. Coupled with so many being performed in countries with massively different tea consumption than our own. Makes these less generalizable than those of coffee might be. I’m also a

coffee drinker but the conclusions I would make are similar. I wouldn’t strongly advocate that anyone take up tea based on these findings. But there seemed to be few harms and some potential benefits. Drink it if you like it. It, too, seems to be a completely reasonable addition to a healthy diet.

Do you know any other benefits or harms of drinking tea and is drinking tea good for health? Please let us know in the comments section! We would love to hear from you. Thanks for reading this article.

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