There is no good evidence that ordinary matcha makes people infertile. Matcha contains caffeine, so the sensible fertility question is how much caffeine you consume overall—not whether the tea has a unique infertility effect.
What current guidance says
The American Society for Reproductive Medicine says moderate caffeine consumption has no apparent adverse effect on fertility or pregnancy outcomes. NICE likewise tells people concerned about fertility that there is no consistent evidence linking caffeinated drinks with fertility problems. These recommendations apply to caffeine generally, not to a special “matcha infertility” mechanism.
Why dose still matters
Matcha servings vary by powder amount and product. Add caffeine from coffee, tea, energy drinks, chocolate and supplements before judging your total. If you are trying to conceive, receiving fertility treatment, or taking medication, ask your clinician what limit fits your circumstances rather than treating a general internet number as a prescription.
Pregnancy is a separate question
Once pregnant, caffeine guidance changes with the pregnancy context. ACOG describes moderate intake up to 200 mg per day as not appearing to increase miscarriage or preterm-birth risk, while NIH’s pregnancy fact sheet notes that pregnancy slows caffeine clearance. Follow your obstetric clinician’s advice and use the product label where available.
When to get help
Persistent difficulty conceiving, irregular cycles, pain, or concerns about a partner’s fertility should be assessed by a qualified clinician. Do not stop prescribed treatment or rely on matcha—or avoiding matcha—as a fertility treatment.
Bottom line: matcha itself is not established as a cause of infertility. Keep caffeine moderate, track the whole day’s intake, and get personalized advice when planning pregnancy or undergoing fertility care. For caffeine amounts, see our matcha caffeine guide.