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So, who is right? The truth lies in the middle ground.
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It’s About the Dose: The FDA states that up to 400mg of caffeine daily is generally safe for healthy adults. You would need to drink a very large amount of matcha (5+ cups) to reach excessive levels. For most people, one or two cups is unlikely to cause disruption.
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Matcha Isn’t an Anomaly: As Dr. Crystal Wyllie points out, any potential issues are linked to caffeine in general, not matcha specifically. In fact, matcha may be a better choice than coffee due to its lower caffeine content and calming L-theanine.
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Listen to Your Body: Every person is different. If you have irregular periods or severe PMS, it’s reasonable to cut back on all caffeine sources, including matcha, for a few weeks to see if your symptoms improve.
The Bottom Line:
There is no direct scientific evidence that moderate matcha consumption has adverse effects on the menstrual cycle. For most, enjoying a cup or two of matcha is safe and may even offer benefits like reduced inflammation and better mood stability.
However, if you are sensitive to caffeine or already experience hormonal imbalances, it’s always wise to consult with your personal healthcare provider for tailored advice. As with most things in nutrition, moderation is the most reliable path.
