Can L-Theanine Help You Sleep? A Meta-Analysis Review | Research Reflections Titelbild

Can L-Theanine Help You Sleep? A Meta-Analysis Review | Research Reflections

Can L-Theanine Help You Sleep? A Meta-Analysis Review | Research Reflections

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In this relaxing episode of Research Reflections, we explore a 2024 meta-analysis reviewing 18 randomized controlled trials on L-theanine—a calming compound found in tea.

You’ll learn what the science actually says about its effect on sleep onset, daytime fatigue, and overall sleep quality. We'll also cover what didn’t improve, the best dosage ranges, and where research still needs to go.

Whether you're curious about natural sleep aids or just want to learn something new in a calm space, you're in the right place.

Study Referenced: Bulman A, D'Cunha NM, Marx W, Turner M, McKune A, Naumovski N. The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis. Sleep Med Rev. 2025 Jun;81:102076. doi: 10.1016/j.smrv.2025.102076. Epub 2025 Feb 25. PMID: 40056718.

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