Ad: (Description contains product links). 12 health benefits of L-theanine backed by science.
L-Theanine is a non-essential amino acid found in green tea leaves, also known as "γ-glutamylethylamide". This natural compound crosses the blood-brain barrier, and promotes relaxation in the body by increasing alpha-wave activity.
In this video I teach you everything you need to know about L-theanine and the benefits for reducing stress, enhancing cognitive focus, supporting healthy blood pressure, sleep and much more. We also discuss the potential side effects of L-theanine.
Since L-Theanine is found in green tea and matcha, it also comes packaged naturally with caffeine and works synergistically. However some people prefer to take this isolated in the form of a supplement, or in a nootropic blend with other nutrients chosen to support calm focus and brain function.
Scientific References:
? Hidese et al. (2019) Stress & Cognitive Functions. Nutrients. https://pmc.ncbi.nlm.nih.gov/articles/PMC6836118/
? Haskell et al. (2008) Cognition and Mood. Biol Psychol. https://pubmed.ncbi.nlm.nih.gov/18006208/
? Lyon et al. (2011) Sleep Quality & ADHD. Alt Med Rev. https://pubmed.ncbi.nlm.nih.gov/22214254/
? Yoto et al. (2012) Blood Pressure & Stress. J Physiol Anthropol. https://pubmed.ncbi.nlm.nih.gov/23107346/
? Nathan et al. (2006) Neuropharmacology of L-theanine. J Herb Pharmacother. https://pubmed.ncbi.nlm.nih.gov/17182482/
? Bukowski & Percival (2008) T Lymphocyte Function. Nutr Rev. https://pubmed.ncbi.nlm.nih.gov/18254876/
? Higashiyama et al. (2011) Attention & Reaction Time. J Funct Foods. https://doi.org/10.1016/j.jff.2011.03.009
? Kahathuduwa et al. (2018) Attention & fMRI Study. Nutr Res. https://pubmed.ncbi.nlm.nih.gov/29420994/
? Siamwala et al. (2013) Nitric Oxide Production. J Nutr Biochem. https://pubmed.ncbi.nlm.nih.gov/22819553/
? Unno et al. (2013) Anti-stress in Students. Pharm Biochem Behav. https://pubmed.ncbi.nlm.nih.gov/24051231/
? Deijen & Orlebeke (1994) Tyrosine & Cognitive Function. Brain Res Bull. https://pubmed.ncbi.nlm.nih.gov/8293316/
? Sakamoto et al. (2019) Psychotropic effects of L-theanine. Pharm Res. https://pubmed.ncbi.nlm.nih.gov/31412272/
Ad: The following links include my own products and affiliate recommendations.
Ryan's favourite brain supplements:
? https://www.mindlabpro.com?a_aid=667bf5a54b917&a_cid=f4c782b0 (affiliate link)
L-Theanine :
? https://amzn.to/4ufAWqI (affiliate link)
Ryan's guides, e-books, and audios:
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Timestamps:
⏰ 00:00 - Intro: 12 Benefits of L-Theanine
⏰ 00:11 - Potential Health Benefits
⏰ 06:55 - Daily Intake
⏰ 07:19 - Common Dosages For L-Theanine
⏰ 08:15 - Side Effects
⏰ 08:42 - L-Theanine vs L-Tyrosine
⏰ 09:28 - Natural Sources
About Ryan:
Ryan Taylor BSc is a UK-based nutritionist, educator, and author focused on natural health, food science, and wellness. He holds a CPD-accredited Level 5 Diploma in Nutrition and a degree in Computing Science. Since 2016, he has produced over 1,500 educational videos and published several books, helping millions understand the power of nutrition and natural remedies.
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Disclaimer:
This video is for informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before making changes to your diet, medication, or lifestyle. Some links in this description may be affiliate links. If you click and purchase, I may earn a small commission at no extra cost to you.
? I wish you great health, wealth and happiness in everything you do.