L-theanine: Can a compound in tea lower anxiety? 🫖🧠 L-theanine is an amino acid naturally found in tea leaves. First linked to tea’s calming effects in the 1940s, it is now sold as a supplement for stress relief, focus and better sleep. Research into its effects has so far been limited, but there are intriguing hints it may have several benefits for the brain, particularly in people who have anxiety. https://www.newscientist.com/article/2495177-l-theanine-can-a-compound-in-tea-lower-anxiety-an