--- title: "Everything You Need to Know about L-Theanines Biggest Benefits ..." description: "Stress Reduction; Increases Alertness; Promotes Brain Health; Improved Memory; Cardiovascular Benefits; More ..." url: "https://health.allwomenstalk.com/benefits-of-l-theanine-that-you-should-know-about/" category: "health" last_updated: "2026-06-02" --- # Everything You Need to Know about L\-Theanines Biggest Benefits ... Even if you have not heard of it, you will be very interested in it once you learn about all the benefits of L-theanine. L-theanine is an amino acid that is abundant in green tea, and it is one of the reasons that green tea is a touted as being a wonderful beverage to consume. Yet, as healthy as green tea is, the many benefits of L-theanine have lead researchers to learn more about this amino acid, and what they have found is quite amazing. ## 1. Stress Reduction Researchers have discovered that 50 milligrams of L-theanine helps relax people and bring down stress levels without causing drowsiness. While 50 milligrams is more than the 20 milligrams of L-theanine that is found in one cup of green tea, it is possible to take supplements. However, if you drink a lot of tea, you may already be experiencing the relaxing benefits of L-theanine. ## 2. Increases Alertness One of the remarkable qualities of L-theanine is that, while it reduces stress levels, it also increases alertness. However, because it does relax people, the alertness that L-theanine provides is calm and focused instead of the jittery attention that coffee can cause. If you are wondering how L-theanine increases alertness, you will be interested to know that it increases alpha activity in the brain, which enhances mental alertness and focus. ## 3. Promotes Brain Health Taking L-theanine supplements or drinking large amounts of green tea can prevent damage to brain cells. In addition to preventing damage to brain cells, L-theanine also the ability to increase the production of new brain cells by promoting the release of a protein that promotes nerve growth. ## 4. Improved Memory Since L-theanine has such a profound effect on the brain, it is probably not hard to believe that it can improve memory. Researchers have discovered that L-theanine can enhance the memory of healthy people. They have also found that people with mild cognitive impairment can experience memory improvement by taking L-theanine. In one study, participants with mild cognitive impairment showed memory improvement by taking 1,680 milligrams of L-theanine a day for 16 weeks. ## 5. Cardiovascular Benefits L-theanine can help ward off cardiovascular problems in two different ways. Firstly, it acts as an antioxidant and prevents the oxidation of LDL (bad) cholesterol. Secondly, L-theanine promotes nitric oxide production, which helps with blood vessel dilation and can decrease blood pressure. ## 6. Promotes Well-Being L-theanine increases the production of dopamine, which is a neurotransmitter that increases a sense of well-being. Dopamine controls the pleasure centers of the brain, and when levels of this neurotransmitter increase, you experience a positive effect in your mood. ## 7. Increase Effectiveness of Cancer Treatments L-theanine has been found to increase the ability of some cancer medications to fight cancer. Researchers have found that L-theanine multiplies the amount of cancer medications in cancer cells, and it decreases the concentration of the medicine in healthy cells. Due to these findings, researchers believe that L-theanine has a promising future in cancer treatments. Because of its many wonderful health benefits, many people have started taking L-theanine supplements. L-theanine supplements have been found to be very safe, but it is always best to talk to a doctor before taking new supplements. However, if you want to enjoy some of the benefits before talking to a doctor, you can certainly enjoy some green tea. Would you consider supplementing with L-theanine? **Sources:** _ltheanine.net_, [healthyeating.sfgate.com](https://healthyeating.sfgate.com/benefits-using-l-theanine-4731.html), [med.nyu.edu](https://nyulangone.org/conditions), _psychologytoday.com_ ## Related Posts - [7 Health Benefits of Wild Rice over Brown Rice ...](https://health.allwomenstalk.com/health-benefits-of-wild-rice-over-brown-rice/) - [9 Weight Loss Benefits of Coffee to Take Advantage...](https://weightloss.allwomenstalk.com/weight-loss-benefits-of-coffee-to-take-advantage-of/) - [7 Reasons You May Need to Increase Your Vitamin an...](https://health.allwomenstalk.com/reasons-you-may-need-to-increase-your-vitamin-and-mineral-intake/) - [eating fruits in the morning benefits](https://health.allwomenstalk.com/health-benefits-of-eating-fruit-early-in-the-day/) - [Juice Cleanses: How It Can Get Your Health Back on...](https://health.allwomenstalk.com/juice-cleanses-how-it-can-get-your-health-back-on-track/) - [7 Reasons to Start Cooking with Teff ...](https://food.allwomenstalk.com/reasons-to-start-cooking-with-teff/) - [7 Benefits of Grapefruit Essential Oil ...](https://health.allwomenstalk.com/benefits-of-grapefruit-essential-oil/) - [is brewers yeast good for you](https://health.allwomenstalk.com/reasons-brewers-yeast-is-a-fantastic-health-supplement/) - [Understanding Facebooks Most Unexpected Benefits ....](https://apps.allwomenstalk.com/benefits-of-facebook-that-are-somewhat-unexpected/) - [7 Reasons to Drink Herbal Tea ...](https://health.allwomenstalk.com/reasons-to-drink-herbal-tea/) - [7 Amazing Health Benefits of Weight Lifting That Y...](https://fitness.allwomenstalk.com/heath-benefits-of-weight-lifting/) - [7 Benefits of Using Amino Acids before and after Y...](https://fitness.allwomenstalk.com/benefits-of-using-amino-acids-before-and-after-your-workouts/) ## Site Information - [Main page](https://allwomenstalk.com) - [Contact us](https://allwomenstalk.com/contact.html) - [HTML article](https://health.allwomenstalk.com/benefits-of-l-theanine-that-you-should-know-about/)