Quick Answer
Green tea is rich in catechins, especially EGCG (epigallocatechin gallate), one of the most studied antioxidants in nature. In a study of more than 13,000 Korean adults, people who drank green tea at least twice a day had better lung health markers than those who never drank it. Lab research suggests EGCG supports the body's own antioxidant defenses in lung tissue. Matcha, made from the whole ground leaf, delivers more catechins than steeped tea. Choose ceremonial-grade, certified organic matcha that's lab tested for heavy metals.
A Nutritionist's Take
"Matcha is one of the most amazing antioxidants there is, and it's so good for the lungs and the rest of the body. But you have to get ceremonial grade, certified organic and lab tested for heavy metals. I love it sourced from Japan, where some families have been making it for generations."
— Jordan Dorn, Certified Nutritionist
Most people drink green tea for a gentle lift in energy. Fewer people know it's also one of the most researched antioxidant foods there is, and that some of that research points to the lungs.
Matcha is my favorite way to get it. In this article, I'll cover what makes green tea special, what the research says about green tea and lung health, why matcha stands out, and how to choose a clean one.
In this article 8 sections
What's in Green Tea: Catechins and EGCG
Green tea comes from the leaves of the tea plant, Camellia sinensis. Unlike black tea, the leaves aren't oxidized, so they keep more of their natural polyphenols. The most important of these are catechins, and the most abundant and studied catechin is EGCG (epigallocatechin gallate) [1].
EGCG is a powerful antioxidant. In lab research, it neutralizes free radicals directly and also switches on the body's own antioxidant and detox enzymes through a pathway called Nrf2 [1]. That's a big part of why I think of matcha as supporting the body's natural detoxification at the cellular level. When you're choosing a green tea, you want one that's high in catechins like EGCG.
What the Research Says About Green Tea and Lung Health
Your lungs are exposed to more of the outside world than almost any other organ: air pollution, smoke, dust, mold and chemical fumes. That makes antioxidant protection especially relevant for lung tissue.
Population research. A study of 13,570 Korean adults aged 40 and older found that the more often people drank green tea, the better their lung health markers. People who drank green tea at least twice a day were significantly less likely to have chronic lung disease than people who never drank it [2]. That's an association, not proof of cause and effect, but it's an encouraging one.
Lab and animal research. In preclinical studies, EGCG reduces oxidative stress and supports a healthy inflammatory response in lung and airway tissue [1].
An honest note: most of the mechanism research on EGCG is in lab and animal studies, and green tea isn't a treatment for any lung condition. I see it as one of the easiest, most enjoyable daily habits for antioxidant support, on top of the foundations of lung health.
Why Matcha Stands Out
With regular green tea, you steep the leaves and throw them away. With matcha, the shade-grown leaves are stone-ground into a fine powder that you whisk into water, so you consume the whole leaf. That generally means more catechins per cup than steeped green tea. Matcha also contains L-theanine, an amino acid that pairs with its natural caffeine for calm, focused energy. Learn more in our Matcha 101 guide.
How to Choose a Clean Matcha
Because you're eating the whole leaf, whatever the tea plant absorbed from its soil and environment ends up in your cup. That's why quality matters more with matcha than with almost any other tea. Here's what I look for:
Ceremonial grade. Made from the youngest, most tender leaves, with a bright green color and a smooth, less bitter taste.
Certified organic. No synthetic pesticides on a leaf you're going to eat whole.
Lab tested for heavy metals. This is non-negotiable for me.
Sourced from Japan. I love Japanese matcha because some families there have been perfecting it for generations. They're true experts in shade-growing, harvesting and stone-milling.
That's exactly what we built our Organic Japanese Matcha Tea Powder around: ceremonial grade, USDA certified organic, shade-grown and stone-milled in Japan by traditional tea makers, and third-party lab tested.†
What Customers Report
As of October 2026, our Organic Japanese Matcha Tea Powder has 12 customer reviews averaging 4.75 out of 5. Reviewers most often mention clean sourcing and lab testing, smooth taste and steady energy without a crash. One three-star reviewer found the flavor just okay and the price high for the serving size. Results vary.
How to Make Matcha
Sift the serving on the label into a bowl, add a small splash of hot (not boiling) water, and whisk until smooth and frothy. Then top it up with more water, or with warm milk for a latte. Boiling water can make matcha taste bitter. One cup a day in the morning is an easy habit to build. Our Organic Japanese Matcha whisks smoothly with no sweeteners or fillers.†
Other Ways to Support Your Lungs
Green tea is one piece of the picture. The foundations matter most:
Don't smoke, and avoid secondhand smoke.
Reduce indoor air pollution with ventilation and an air filter, and watch outdoor air quality on bad days.
Move every day. Exercise and deep breathing keep your lungs working well.
Eat a whole-food diet rich in colorful vegetables and other antioxidant foods.
Stay hydrated and sleep well.
Herbs have a long traditional history for respiratory support too. See our guides to expectorant herbs, osha root, lungwort and turmeric for lung health, plus our lung cleansing tea recipe. Our Lung Clear & Support Tonic combines osha root, lungwort, mullein and plantain leaf in a liquid extract.†
Safety
Green tea as a drink is considered safe for most adults [3]. Matcha contains caffeine, so watch your total intake, especially if you're sensitive to caffeine, pregnant or breastfeeding. Rare cases of liver injury have been reported, mainly with concentrated green tea extract pills rather than brewed tea, and green tea can interact with some medications [3]. Talk to your doctor before using green tea supplements if you take medication. See a doctor for any ongoing cough, shortness of breath or wheezing.
The Bottom Line
Green tea, and matcha especially, is one of the richest sources of EGCG, an antioxidant with encouraging research for lung health. Quality is everything: choose ceremonial-grade, certified organic matcha from Japan that's been lab tested for heavy metals, and pair it with the foundations of clean air, movement and a whole-food diet. If you want to try ours, start with our Organic Japanese Matcha Tea Powder.†
References
Mokra D, Adamcakova J, Mokry J. Green Tea Polyphenol (-)-Epigallocatechin-3-Gallate (EGCG): A Time for a New Player in the Treatment of Respiratory Diseases? Antioxidants. 2022;11(8):1566. PMC9405266
Oh CM, Oh IH, Choe BK, Yoon TY, Choi JM, Hwang J. Consuming Green Tea at Least Twice Each Day Is Associated with Reduced Odds of Chronic Obstructive Lung Disease in Middle-Aged and Older Korean Adults. J Nutr. 2018;148(1):70-76. MEDLINE
National Center for Complementary and Integrative Health. Green Tea. nccih.nih.gov
