Does green tea reduce stress?

Stress and anxiety are two conditions that highly affect almost 264 million people around the world as of 2015, and the Centers for Disease Control estimate that stress contributes to 80 percent of illnesses. Prolonged stress can be related to a number of chronic conditions and diseases, including hypertension, type 2 diabetes, and coronary heart disease, as well as anxiety-related diseases, including eating disorders, irritable bowel syndrome, and substance abuse.

There are many ways to reduce stress, especially at this time of so many uncertainties. While in most countries, working out in a gym or running in a park can no longer be done due to lockdowns, either might find watching Netflix and chilling stress-reducing. Others would instead do workouts in the comfort of their homes, like yoga or other exercises through YouTube, while others may find a spot to sit on while finally having time to browse through their books they bought a long time ago but never opened. Others may have learned a new skill, such as baking, cooking, or painting.

Stress-Free Drinking and Knowing the Benefits

However, one of the easiest ways to fight off stress is to drink beverages that have certain benefits for our bodies. Green tea is no exception. Though tea in general is basically consumed to help digestion after meals, have you ever wondered why it is also given in spas after a very relaxing massage? It is because green tea is found to have mental-health benefits for the drinker, such as reducing stress. Aside from its favorable taste, which is why green tea is a very popular drink nowadays, it promotes numerous health benefits, including neuroprotection, cholesterol-lowering properties, strong antioxidant capacity, quality emotional status, quality sleep, and suppression of hypertension. If one is feeling especially stressed out and anxious on a regular basis, one may find it hard and struggle to lose weight. It also helps in the regulation of cholesterol, aging, the reduction of the inflammatory response, and blood pressure. In a 2019 study, consumption of green tea was observed to reduce the activity of toxic metals like cadmium and lead inside the bodies of mammalian models and protect the drinker from metal stress. Tea polyphenols found in green tea can also increase the levels of glutathione, catalase, quinone reductase, and superoxide dismutase, along with inhibiting DNA oxidative damage, which ultimately acts as the stress response mechanism.

The main factors for this are the tea catechins or antioxidants such as epigallocatechin gallate (EGCG), which accounts for up to 42 percent of the dry weight of brewed green tea and makes people more calm and nurtures a relaxed and attentive state of mind. Green tea is in fact considered the most predominant source of catechins among all dietary sources, ahead of chocolate, red grapes, wine, and apples. There is also the presence of the amino acid L-theanine, which makes up around 3 percent, which is an amino acid found in green tea leaves that helps you relax and keep stress at bay. In fact, according to the European Food Safety Authority (EFSA), 126 mg of catechins are present per 100 mL of green tea, while the Food and Drug Administration (FDA) states that 71 mg of epigallocatechin gallate will be present in the same amount of green tea.

STRESS, STRESS, GO AWAY! Comes with improvement of mood and alertness of mind too.

Also, caffeine, which accounts for up to 5 percent of the dry weight of green tea, is known to improve one’s mood. A research study shows that drinking five or more cups of green tea on a daily basis may reduce the incidence of psychological distress by up to 20 percent. Drinking green tea lowers levels of the stress hormone cortisol. When this stress hormone becomes too high and the adrenals, or two walnut-sized organs that sit on top of the kidneys and control the body’s hormones and help survive in stressful situations, are constantly stressed, it sets off an autoimmune, inflammatory response in the entire body, leading to weight gain, trouble thinking, sleep deprivation, anxiety, or, at worst, may lead to chronic or cardiovascular diseases.

Also, as researchers found, theanine also helps to reduce anxiety. A cup of green tea has been found to help people recover more quickly from stressful tasks. Andrew Scholey, a psychopharmacologist in Melbourne, Australia, reported in 2016 that those who consumed 200 milligrams of L-theanine, around the amount found in eight cups of tea, had lower cortisol levels and reported feeling more relaxed after performing stress-inducing tasks.

While green tea is known for reducing stress and lowering the risk of anxiety, paradoxically, it also promotes alertness. Shcoley says that "tea is calming but alerting at the same time" due to caffeine, which benefits both one’s mood and cognition, and L-theanine, which improves memory and reaction time while relaxing only the areas of the brain that are not needed for a specific task, as hypothesized by Scholey.

On the other hand, decaffeinated green tea before bed can calm the drinker and encourage sleep, and it has been scientifically proven to both decrease stress levels and improve the quality of sleep. In a 2017 study, participants were able to fall asleep much more easily when drinking decaffeinated green tea, and they reported feeling much less stressed out over the course of the one-week experiment.

Long-term Benefits in Reducing Stress

Drinking green tea does not only reduce stress on a short-term basis, but it also lowers the risk of depression and dementia in the long run.. Studies show that this may be the effect if one gets into the habit of drinking at least 100 milliliters (about half a cup) of green tea a day. In a 2006 paper, it was reported that consuming green tea reduces the development or enhancement of oxidative stress, therefore protecting the individual from oxidative stress diseases. Green tea drinking is also valuable in several chronic diseases known as oxidative stress conditions, such as cardiovascular diseases, which are one of the major causes of mortality and morbidity in the world.

So, the next time that you feel gloomy, especially with all the uncertainties happening around the globe, one sure way to reduce your stress and anxiety is to drink a cup of green tea. So, drink your stress away! 

FAQs about Green Tea and Stress Reduction

Does green tea actually reduce stress, or is it just the warm-drink ritual? How quickly do I feel the stress-reducing effects after drinking green tea? Which Japanese tea is best for stress reduction specifically? Are there L-theanine supplements that work better than tea? Can green tea help with anxiety disorders, or just everyday stress?

Does green tea actually reduce stress, or is it just the warm-drink ritual?

Both, with the L-theanine being the genuinely active compound. L-theanine in green tea increases alpha brain wave activity and modestly boosts GABA (the brain's primary inhibitory neurotransmitter), producing a measurable calm-focus state within 30-60 minutes of consumption. EEG studies confirm the brain-state change is real, not just the placebo of a warm cup. The gyokuro and matcha (抹茶) deliver the highest L-theanine concentrations available.

That said, the warm-drink ritual is also legitimately stress-reducing. The pause to brew, the warm cup in your hands, the deliberate slowing of pace — these contribute to the parasympathetic-nervous-system shift that L-theanine biochemically supports. The ritual and the chemistry work together.

Practical: daily green tea practice is a low-cost, evidence-supported stress-management tool. Effect size is modest but reliable. It supports rather than replaces other stress management (sleep, exercise, therapy, etc.) for people with serious stress or anxiety conditions.

Gyokuro - Shaded Imperial Premium Green Tea From $60.00 /

How quickly do I feel the stress-reducing effects after drinking green tea?

L-theanine reaches peak brain levels around 30-60 minutes after consumption, so the effect builds gradually rather than hitting immediately. Most people notice a calmer state within 45 minutes of finishing a cup, with the effect lasting 2-3 hours before tapering.

Sustained daily consumption produces a more reliable baseline calm. Drinking 3-5 cups daily over 4-8 weeks tends to produce a measurable shift in how stress feels day-to-day — same external stressors, slightly less reactive internal response. This baseline shift is what most regular tea drinkers report as the most valuable benefit.

If you're trying to use green tea as an acute anti-stress tool (drink before a stressful meeting), give it 45-60 minutes to take effect. Drinking right before isn't ideal because the L-theanine peak hasn't built up yet by the time you need it.

Which Japanese tea is best for stress reduction specifically?

Shaded teas have the most L-theanine — gyokuro, matcha, kabusecha. One bowl of matcha delivers about 30-40 mg of L-theanine; a cup of gyokuro delivers roughly the same; a cup of standard sencha delivers about 15-25 mg. The shaded teas are the most efficient delivery for stress reduction specifically.

For evening stress reduction (when caffeine would interfere with sleep), hojicha (ほうじ茶) is the right choice. The L-theanine content is reduced by roasting (about 60% of standard sencha levels) but the caffeine content is also reduced by about two-thirds. Net effect: lower-intensity stress reduction at much lower caffeine cost — appropriate for evening use.

Practical rotation for a stress-management focused tea practice: morning matcha (peak L-theanine + alertness), afternoon sencha (sustained focus + stress baseline), evening hojicha (wind-down without caffeine disruption). Three teas covering three windows.

Hojicha - Roasted Green Tea $25.00 /

Are there L-theanine supplements that work better than tea?

Pure L-theanine supplements (typically 100-200 mg capsules) deliver concentrated L-theanine without additional caffeine. For people who want the calm-focus effect without any caffeine — such as those with caffeine sensitivity, anxiety disorders, or who want it before bed — supplements are functionally appropriate.

What you lose with supplements: the caffeine-L-theanine synergy that produces the distinctive "calm but alert" state of green tea. Pure L-theanine alone is calming but lacks the alert dimension; pure caffeine alone is alert but jittery. The tea naturally pairs them in roughly the right ratio.

If your goal is daytime stress reduction with focus, tea is more efficient (alertness comes free with the L-theanine). If your goal is evening stress reduction or sleep support, L-theanine supplements without caffeine are more appropriate. Different tools for different windows.

Can green tea help with anxiety disorders, or just everyday stress?

Modest help for mild-to-moderate anxiety; insufficient for severe anxiety disorders. Several small studies have shown that daily L-theanine intake (whether from tea or supplements) reduces anxiety symptoms in adults with moderate anxiety. Effect size is meaningful but smaller than what prescription anti-anxiety medication produces.

For diagnosed anxiety disorders (generalized anxiety, panic disorder, social anxiety), green tea is supportive rather than therapeutic. Continuing prescribed treatment plus daily green tea can produce better outcomes than treatment alone for some patients, but skipping treatment in favor of tea isn't appropriate.

Watch the caffeine. Some anxiety-prone individuals are caffeine-sensitive enough that even green tea's modest caffeine triggers symptoms. Hojicha, decaf green tea, or pure L-theanine supplements are the right tools for that subgroup. Personalize based on how your specific body responds rather than assuming the population-average response applies to you.

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