Matcha has been drunk in Japan for centuries, and in recent years it's attracted serious attention from researchers as well as wellness enthusiasts. Here's what the evidence suggests — and what's still being studied.
What Makes Matcha Different?
Because matcha is made from the whole ground leaf rather than an infusion, you consume a higher concentration of the plant's natural compounds than you would from standard green tea. The two most discussed are EGCG and L-theanine.
Antioxidants (EGCG)
Matcha is particularly rich in a catechin called EGCG (epigallocatechin gallate), one of the most studied antioxidants in green tea. Antioxidants help protect cells from oxidative stress caused by free radicals.
Research into EGCG is ongoing and much of it has been conducted in laboratory settings rather than large human trials, so it would be an overstatement to make definitive claims. What's established is that matcha contains EGCG in meaningful quantities — more so than most other green teas, due to the shading process that concentrates nutrients in the leaf.
L-Theanine and Caffeine
Matcha contains both caffeine and L-theanine — an amino acid that occurs naturally in tea plants and is the subject of growing research interest.
What's well-documented is that L-theanine and caffeine work differently together than caffeine alone. Many people report a more focused, steady energy from matcha compared to coffee, though individual responses vary. At around 70mg of caffeine per cup — roughly two thirds of a standard coffee — matcha is also a lower-caffeine option for those who find coffee too stimulating.
A Note on Health Claims
It's worth being straightforward here: much of the research on matcha's health properties is preliminary, conducted in small studies or animal models, and shouldn't be taken as proof of specific health outcomes. Matcha is not a medicine, and drinking it won't offset an unhealthy diet or lifestyle.
What it is is a well-made, minimally processed drink with a notable nutritional profile — and for many people, a more considered alternative to coffee or sugary drinks.
Does Quality Matter?
Yes — significantly. The shading process that gives ceremonial grade matcha its smooth flavour is the same process that drives up L-theanine and chlorophyll content. Latte grade matcha, made from older leaves with less shade time, has a lower concentration of these compounds.
If you're drinking matcha partly for its nutritional profile, ceremonial grade is the more worthwhile choice. Our Moicha Ceremonial Matcha is sourced from Uji, Kyoto — JAS organic certified and Great Taste Award-winning.