10 Reasons Why Green Tea Extract is Bad for You

by Kei Nishida

10 Reasons Why Green Tea Extract is Bad for You

Green tea is prized for its health benefits, so wouldn’t an extract be even better? Green tea extract is a supplement derived from the green tea plant. The idea behind it is if you process and concentrate a healthy substance like green tea, its positive effects will be boosted. But As the age-old adage goes -- more is not necessarily better. Green tea extract can, in fact, have negative effects on your health. Here are 10 reasons why green tea extract is bad for you:

1. The Concentrated Doses of Caffeine in Green Tea Extract Can be Very Dangerous

For decades, case reports have found that consuming large amounts of green tea extract is more likely to cause negative effects from caffeine than drinking green tea itself, according to the U.S. Pharmacopeia Dietary Supplement Information Expert Committee published findings in 2008 in “Drug Safety.” With taking any extract, you must keep in mind that concentrated doses are different than taking the substance in its original form and can have a dangerous amount of certain ingredients. Extracts always pose a risk.

2. Green Tea Extract Causes Liver Toxicity

We can appreciate the powerful antioxidant benefit of green tea, but you want to avoid too much of a good thing. Catechins, a type of polyphenols, target your vital mitochondria. This attack prevents them from helping your body to metabolize food into energy and can lead to hepatitis or even liver failure. Twenty percent of drug-related injuries are currently caused by the wide-spread use of unregulated supplements, according to the National Institutes of Health. Herbert Bonkovsky, M.D., a gastroenterologist from the Carolinas HealthCare System recommends the complete avoidance of supplements with green tea extract as an ingredient. Time to clean out the medicine cabinet.

3. Taking Green Tea Extract can put Vital Organs at Risk

It’s not just your liver you need to be mindful of, Other organs in your body can be negatively affected? by green tea extract as well. According to an article in the journal Toxicologic Pathology in 2010, concentrations above 1000mg of green tea extract were lethal in mice. Although most of the deaths were caused by liver necrosis, the extract caused secondary effects to their noses, lymph nodes, and spleens.

4. Don't Risk Scary Heart Issues by Taking Green Tea Extract

You know that uncomfortable feeling when your heart starts racing, and it can be scary. Otherwise known as heart palpitations, these uncomfortably fast heart beat episodes are a common side effect from consuming too much caffeine. While the caffeine content in green tea is relatively low, things like green tea extracts or green tea energy drinks can have a very high caffeine content. It’s best to sick drinking the actual tea -- the naturally occurring caffeine won’t be too much for your heart to handle.

5. There are NO Federal Regulations on What They put in Green Tea Extracts.

Think the FDA has got your back when it comes to supplements? Think again. The 1994 Dietary Supplement Health and Education Act did a major regulation haul on the supplement market. Unlike prescription and over-the-counter drugs, the FDA now does not require manufacturers of dietary supplements to register their products or get any type of approval before producing or selling supplements. This means that pretty much ANYTHING could be in those pills, in any amount. Green tea extract can have incredibly high amounts of caffeine or low amounts of health-benefitting antioxidants — it’s anyone’s guess. That’s a gamble you want to avoid.

Green Tea Extract

6. Doctors Do Not Recommend Taking Green Tea Extracts

If you are one of most Americans who takes a prescription drug, you’ll want to avoid green tea extract. Their high doses of caffeine can have negative interactions with medications you are taking, or cause them to not work at all. Scary! Green tea extract’s high dose of vitamin K can make blood thinning medication such warfarin or aspirin ineffective. When taken together with MAOIs, green tea extract can cause a severe increase in blood pressure. These are just a few of the possible drug interactions of green tea extract. Always consult your doctor before starting any dietary supplement – or better yet, just avoid them.

7. Industrially Processed Supplements are Bad for you and the Environment

Even though they are often called “natural,” almost all non-food supplements are processed with petroleum derivative or hydrogenated sugars. Given that there is no FDA regulation on dietary supplements, it’s almost impossible to know how any green tea extra was processed. It’s always best to avoid the processed version of a good thing and stick to the basics – real green tea.

8. Taking too Many Polyphenols can Cause Iron Deficiency.

Polyphenols are powerful sources of antioxidants and do amazing things for our health. Some green tea extracts contain excessive amounts of polyphenols -- anywhere from 100-750mg per pill. According to the American Journal of Clinical Nutrition, large amounts of polyphenols could interfere with iron absorption, causing a potential iron deficiency in people who are borderline anemic. Polyphenols are readily available in healthy doses in a variety of natural foods like onion, berries, apples and green tea. (Read more about Polyphenols on my other article.)

9. Green Tea Extract can Lower Testosterone Levels in Men.

It’s hard to imagine – but it’s true. The excessive amounts of green tea extract can lower levels of testosterone. One study found that excessive intake of green tea lowered the testosterone hormone in rats. Another study in India revealed high doses of green tea extract can cause functional impairment of the testis in rodents, thereby causing infertility issues. Keep your manhood safe and avoid this possibility by steering clear of extracts.


10. Green Tea Extract Consumption has Been linked to Death

With the Plethora of negative side effects, green tea extract can cause, you may being thinking you've heard the worst. Wrong! Consumer Reports put green tea extract on a list of 15 supplements to avoid, citing reasons like dizziness and even death! When it comes to your health, you can never be too careful. Stick with whole, original versions of your favorite health substances, and you’ll have no need to worry about side effects from high concentrations and unknown ingredients.

If you want the health benefits of green tea, stick to the actual tea. It’s delicious, better for you, and cheaper than expensive supplements. Your body will be glad you did. Cheers to your health!

Following premium green tea provided by JapaneseGreenTeaIn.com has high amounts of health benefit which are natural and tastes well. Get your green tea today instead of taking green tea extract.

Issaku - Premium Japanese Green Tea

Issaku

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.

Download our Green Tea Science Brewing Technique Book to learn about 12 Scientific Tips for Brewing Green Tea to Taste Better.

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

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Kei Nishida
Kei Nishida

Author

Kei Nishida, PMP is a writer, a Japanese Green Tea enthusiast, and the founder and CEO of JapaneseGreenTeaIn.com. With two books behind him and more on the way, this entertaining author brings his passion for Green Tea wherever he goes.

His two books "I Will Teach YOU How to be healthy by Using Japanese Green Tea!: Surprising Facts and Tips for How You can Take Best Advantage of This Amazing Plant" and "Green Tea Mania : 250+ Green Tea Facts, Cooking and Brewing Tips & Trivia You (Probably) Didn't Know" are available in print and Kindle Book on Amazon.
These books and his blog Japanese Green Tea and Health provides health related tips and research findings focusing on green tea and its health benefit in variety of ways.

Kei’s love of Green Tea and passion for writing has helped make him a feature author on sites and Magazines such as Yoga Digest Magazine, T-Ching, Sexy Fit Vegan, and Woman’s Daily Magazine.

His enthusiasm for health and tea pushed him to developing his company, JapaneseGreenTeaIn.com, where he brings the very best in Japanese Green Tea to customers all over the world.

Kei grew up in Japan and moved to USA at the age of 14, now living in Portland, Oregon. In his earlier carrier, he was Software Engineer at Hewlett Packard Inc. Kei takes advantage of being bi-lingual in Japanese and English, as well as his science background for his research and writing. Information you find in his books and blogs are a combination of the best content and research from Japan and all around the world.

Books By Kei Nishida

I will Teach You How to Be Healthy By Using Japanese Green Tea

Paperback: 112 pages
Language: English
ISBN-10: 1541252454
ISBN-13: 978-1541252455
Product Dimensions: 5.5 x 0.2 x 8.5 inches
Click Here to View Table of Contents and First 2 Chapters



Green Tea Mania : 250+ Green Tea Facts, Cooking and Brewing Tips & Trivia You (Probably) Didn't Know

Green Tea Mania : 250+ Green Tea Facts, Cooking and Brewing Tips & Trivia You (Probably) Didn't Know
Paperback: 120 pages
Language: English
ISBN-10: 1544093322
ISBN-13: 978-1544093321
Product Dimensions: 8.2 x 0.3 x 6 inches
Click Here to View Table of Contents and First 2 Chapters



Also in Japanese Green Tea and Health

Japanese Green Tea - Simply Explained
Japanese Green Tea - Simply Explained

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Tea is the most popular drink on Earth next to water. In around 80% of the world, most people prefer to drink black tea rather than green tea. Yet in Japan, green tea is the most consumed beverage, and it is a 6.95 trillion yen (7.8 billion dollar) a year industry. Green tea is embedded in the culture and day-to-day life since it was introduced by China in the 7th Century.

There are so much information about tea which is sometimes confusing. In this article, I will simply explain green tea focusing around Japanese green tea, how it came to Japan, what exactly is green tea and what are the benefit of drinking green tea in general.

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Matcha has been consumed in Japan since the 7th century and is famous for providing drinkers with a calming sort of energy. Matcha is a specific type of Japanese green tea that differs from other traditional teas in the preparation process and in how the plant is grown.

Matcha tea plants are shaded for a few weeks before the harvest to increase natural levels of caffeine and amino acids. The leaves are allowed to dry, stems and veins are removed from the leaves, and then the tea is ground into a fine powder. The powder can be dissolved in milk or water to produce a slightly sweet, richly flavorful tea.

In this article, I will cover 25 Matcha Trivia  you may or may not know before. This is part of a chapter from my recent book: Green Tea Mania : 250+ Green Tea Facts, Tips & Trivia You (Probably) Didn't Know.  Enjoy!

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Steeping Guide

Steeping Guide - Hot

  1. Dissolve 2 teaspoon of powder into 8 Oz of hot water. We recommend about 175°F for most common green tea.

    Please note that our product page has different recommended temperature based on type of tea between 175°F- 185°F; however, 175°F can be the most common and standard temperature that would work for any type of our green tea.

    Steeping Guide on JapaneseGreenTeaIn.com

  2. Wait for 60-120 seconds  (Please follow steeping guide on the product for specific time based on type of tea.)

  3. Use mesh strainer to filter out the green tea leave and serve hot

Steeping Guide - Cold

  1. Dissolve 3-4 teaspoon of powder into 30 Oz of cold water.  For best result, use filtered water, bottled water. Alternatively, you can boil water and let it cool down until room temperature. 

  2. Keep in refrigerator for 3 hours or more. Key point is to use longer time to dissolve. This way, sweetness increases, and it does not break down theanine and vitamin C.  For best result, let it sit for overnight. 

  3. Stair the water first, then use mesh strainer to filter out the green tea leave and serve cold.