A–Z Glossary

Caffeine

A stimulant found in true teas and many other drinks that may need to be limited during pregnancy.

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Tea safety during pregnancy

Tea safety during pregnancy

How tea fits into pregnancy caffeine guidance The most important safety issue for ordinary tea is caffeine. The NHS advises keeping total caffeine intake below 200 mg per day in pregnancy, and that total should include every source, not only tea. MotherToBaby also notes that caffeine crosses the placenta and that the developing fetus metabolizes […]

Caffeine lifestyle habits

Caffeine lifestyle habits

Why caffeine becomes a lifestyle habit Caffeine is one of those substances that often feels personal, but population data show that it is also highly patterned. In U.S. adults, caffeine intake varies with age, sex, and broader sociodemographic and lifestyle factors, which means it is often tied to daily structure, not just individual preference. People […]

Can caffeine cause miscarriage

Can caffeine cause miscarriage

What the evidence says overall When people ask whether caffeine can cause miscarriage, they are usually asking whether an ordinary pregnancy habit is dangerous enough to change. The most balanced answer is that low to moderate intake has not been shown to be a major contributor to miscarriage. The American College of Obstetricians and Gynecologists […]

Can certain teas cause miscarriage

Can certain teas cause miscarriage

What the evidence actually suggests The best summary from the available literature is cautious: evidence is limited, and there is no simple answer that applies to every tea. Reviews of herbal teas used during pregnancy note that some commonly used products have been associated with adverse maternal or perinatal outcomes, including reports of a higher […]