06 · LEAF NOTES

06 / 10

WHAT TEA NATURALLY CONTAINS

Useful context. Careful promises.

What matcha naturally contains, what research suggests about caffeine and L-theanine, and where evidence is still limited.

Matcha has become popular as a wellness drink, and there are good reasons people are interested in it.

Matcha naturally contains compounds including caffeine, L-theanine and catechins.

But there’s an important distinction between “matcha contains compounds that researchers are studying” and “matcha will produce a specific health outcome for you.”

Those statements are not the same.

At Suko, we believe good information should make that distinction clear.

What is naturally present in matcha?

Matcha contains several bioactive compounds.

Caffeine is a naturally occurring stimulant found in tea. It can increase alertness and reduce the perception of fatigue.

L-theanine is an amino acid naturally present in tea. Matcha contains L-theanine, and shading during cultivation can influence its levels.

Catechins are a group of polyphenols found in green tea. EGCG is one of the best-studied catechins in green tea and matcha.

Matcha and focus

One of the most interesting areas of research concerns caffeine and L-theanine.

A recent systematic review and meta-analysis of randomised controlled trials found evidence suggesting that combinations of L-theanine and caffeine may have beneficial effects on some short-term cognitive and mood outcomes, although the size and certainty of effects varied. The researchers also noted the need for more research using tea-equivalent doses and real-world settings.

So saying “matcha contains caffeine and L-theanine, compounds studied in relation to attention and cognition” is reasonable.

Saying “matcha guarantees better focus” is not.

Matcha and antioxidants

Matcha contains catechins and other polyphenols with antioxidant activity.

This is one reason matcha is often discussed in the context of antioxidant-rich foods and beverages.

But antioxidant activity in a laboratory does not automatically translate into a guaranteed health outcome in humans.

That’s an important distinction.

Matcha is not medicine

Matcha can be part of a balanced lifestyle. It is not a treatment for disease.

It shouldn’t replace prescribed medication, medical care or a balanced diet.

This distinction becomes particularly important when discussing conditions such as PCOS, diabetes, anxiety, weight loss or cardiovascular disease.

The evidence around matcha and many specific health outcomes is still developing. Reviews of the literature have concluded that more human research is needed before strong conclusions can be made about many of these effects.

What we can confidently say

Matcha:

  • Contains caffeine
  • Contains L-theanine
  • Contains catechins and other polyphenols
  • Is made from powdered tea leaves
  • Can be enjoyed as part of a balanced diet
  • Can provide a source of caffeine for people who enjoy tea

What we should not promise:

  • Guaranteed weight loss
  • Treatment of PCOS
  • Disease prevention
  • Guaranteed anxiety reduction
  • Guaranteed fat burning
  • Guaranteed detoxification

Good matcha doesn’t need exaggerated promises. The tea itself is interesting enough.

Caffeine
A naturally occurring stimulant in tea
L-theanine
An amino acid naturally present in tea
Catechins
Green tea polyphenols, including EGCG

CONTINUE WITH A BOWL

Choose by how you drink matcha.

Vibrant Japanese matcha with rich umami, natural sweetness, and a fine, silky texture.Suko Signature MatchaBold enough for milk. Easy enough for every day.Suko Daily MatchaVibrant Japanese matcha with rich umami, natural sweetness, and a fine, silky texture.Signature Matcha Refill | Ceremonial GradeBold enough for milk. Easy enough for every day.Daily Matcha Refill | Ceremonial gradeTRY BOTH · FIND YOUR FAVOURITESuko Matcha Duo Trial Pack