Does Green Tea Make You Dehydrated?

October 18, 2021

Does Green Tea Make You Dehydrated?

Since there’s caffeine in green tea, many believe that it's dehydrating. But does green tea really make you dehydrated? Or is this just a common misconception? That's what we'll talk about in today's post.

First, let's go to the root of the rumor to figure out how it got started. Most people assume drinks with caffeine automatically cause dehydration because of their diuretic effect. With that in mind, it's easy to see why so many people wonder if green tea dehydrates them.

But here's the good news: according to medical science green tea actually rehydrates you.

How? Let's find out!


When you drink beverages with water, your body is already taking as much fluid as it needs, and then you will urinate to expel the extra fluids. In short, tea does increase urine production but does not cause you to lose more fluids.

As such, the British Dietetic Association recommends tea for hydration. Additionally, their studies show that dehydration only happens when very high doses of caffeine are consumed.

According to several studies and The University of Maryland Medical Center, the recommended amount of green tea consumption is no more than two to three cups per day. This recommended dosage has around 240-320 mg of polyphenols (a.k.a. flavonoids—learn more about them in this post) that help tea drinkers get the best health benefits of green tea without the overconsumption of caffeine and dehydration.

(Learn more about the health benefits of green tea in this post)

These flavonoids have antioxidant and anti-inflammatory properties and help with digestion, relaxation, weight loss, and dissolving plaque in blood vessels. As this research from the National Institutes of Health (NIH) shows, you will only have a significant diuretic effect if you consume at least 6-13 cups each day.

In that case, it can cause dehydration and increase your heart rate and blood pressure and cause headaches and insomnia. However, when you consume at least one but no more than two to three cups a day, you can reap many of the impressive health benefits from green tea.
With all of that being said, tea is one of the best and healthiest alternative drinks for water!


 So, let's sum it up: Green tea has mild caffeine levels, it is safe to drink in moderation, and it's unlikely to cause dehydration.

  • Caffeine can help you stay alert and burn more fat when you drink before exercise.
  • Aside from caffeine, green tea has EGCG, known as catechins, that help breaks down fats and moves those fats in the bloodstream to make muscles more active.
  • Consuming green tea can help you relax and calm down.
  • If you are craving an extra snack, green tea suppresses your appetite, and you will feel full after just one or two cups of tea.

Green tea has more benefits, and having caffeine does not mean it causes dehydration. Yes, it indeed causes more bathroom visits to flush out extra sodium and water. But sipping moderate cups of green tea does not contribute that much to your fluid intake and does not have a dehydration effect.

According to Dr. Daniel Vigil, clinical professor at the David Geffen School of Medicine at UCLA, if you find yourself with headaches or other symptoms, you may just be sensitive to caffeine, or you’re dehydrated—nothing to do with your tea habit!


The unique health property found in teas but not in any other beverages is the high flavonoid content. And guess what? It's an excellent source of hydration! It is also an antioxidant that can help you flush toxins out of your body. In short, aside from being a healthy fluid, green tea also contains additional health benefits than other fad caffeinated drinks.

So, why not start enjoying the hydration and other health benefits of green tea for yourself? Click here to shop a selection of the best Japanese green tea available.

Did you learn a lot in this post about whether green tea dehydrates you? Here are a few more posts to read next:

This post was first published in 2020, but it was updated in 2021 just for you.

Related Articles You May Be Interested

Does Coffee Dehydrate You? - Coffee Quiz

Get Free Bonus Content

Green Tea and Matcha Books for Bonus

If you have ever thought that Green Tea is an “acquired taste” or that it is “too bitter” to enjoy, we’re here to change your mind! We want everyone to experience the health benefits of Green Tea and show you that this can be an amazing, refreshing, and delicious drink when made correctly. With just a few tips on how to brew this powerful leaf we can change your mind about the taste and enjoyment of drinking Green Tea.

Don’t miss out on the health benefits of tea!

  • Improve health
  • Increase brain function
  • Regulate weight
  • Lower your risk of cancers
  • Reduce risk of heart disease
  • Lowers risk of diabetes

We know that you will love this tips to brewing tea and getting the most flavor and elegance out of every cup.  Sign up for Free Japanese Green Tea Club and get this great informative manual on brewing green tea. You will learn what it is that makes it one of the most popular beverages in the world.

Sign up for Free Green Tea Club for to Get The Two Books for Free.

Unsubscribe anytime. It's Free!


Sign up free to Green Tea Club to get tips and exclusive articles about how to use your matcha and green tea for a healthy lifestyle. Green Tea Club is hosted by Kei Nishida, Author of Cook with Matcha and Green Tea and CEO of Japanese Green Tea Company.

Get free E-book "Green Tea Science – 12 Scientific Tips for Brewing Green Tea To Taste Better" By Kei Nishida - Value $9.99

Get free E-book "Matcha Lover's 21st Century Recipe Collection" By Kei Nishida (42 pages recipe book)  - Value $9.99

Get immediate access to 10% Off coupon for your first order and access to Exclusive Coupons and Specials - Value $50+

Monthly Giveaways - Value $50+

Access to New Green Tea Recipe and Health Articles - Value $50+

Unsubscribe anytime. It’s free!

What do you think about the article? Please comment below or reply me privately here!

1 Response

Vinod gond

December 31, 2021

I am taking a green tea from last 3 mnth daily three cup 24 hrs my lips is dry give some ideas what help for my lips dry

Leave a comment

Comments will be approved before showing up.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Also in Japanese Green Tea and Health

Is Green Tea An Effective Appetite Suppressant & Weight Loss Aid?
Is Green Tea An Effective Appetite Suppressant & Weight Loss Aid?

May 17, 2022

We discuss green tea as an appetite suppressant & how it acts as a weight loss aid and many other benefits of drinking this beverage.

View full article →

Is Green Tea Good Against Depression?
Is Green Tea Good Against Depression?

May 16, 2022

Depression is a serious condition and it seems that more people are now being vocal about this. If you know a loved one who is suffering from depression, then this article can help introduce green tea as an aid in reducing the symptoms of depression. Check the article further to know more.

View full article →

What is Gokuzyo Aracha? Explained in One Minute
What is Gokuzyo Aracha? Explained in One Minute

May 15, 2022

Gokuzyo translates literally to "The Highest Grade" in Japanese. Among all the green tea harvested, Gokuzyo is the section of the best tea leaves based on taste, water level, aroma, and the quality of the leaf itself. Trained masters (called chya-shi in Japanese) pick the best tea leaves by hand, one leaf at a time. Please enjoy the best of what we offer.

View full article →

Steeping Guide
Steeping Guide