
22/08/2022
L-theanine: What Is It And What Are The Benefits?
* Verified by a US-based board-certified doctor.
L-theanine at a Glance
L-theanine is a non-essential amino acid, meaning humans do not naturally produce it. It also means it’s not necessary for our survival. However, taking L-theanine may positively affect chemicals in the brain, including serotonin and dopamine.
We find L-theanine in certain mushrooms, black tea, and green tea. It is very similar to glutamate, an amino acid our body does produce used to carry nerve impulses to our brain.
This chemical may help improve stress levels and mood.
History of L-theanine
L-theanine was first found in 1949 as a component of green tea. Later, it was extracted from gykuro leaves, used for a specific type of Japanese green tea.
In 1964, Japan approved L-theanine for unlimited use in foods and beverages, not including infant food. After, the US approved L-theanine as safe for use, and you can buy the chemical as a supplement in most countries that permit the sale of supplements.
In one cup of green tea, there is 20mg of L-theanine, but most supplements have anywhere from 50-250mg.
Why Take L-theanine?
Helps You Sleep
A 2018 study found that after taking 450-900 mg of L-theanine each day for 8-weeks, people reported improved sleep. Note that these participants were on antidepressants for anxiety.
L-theanine may impact our brain's amino acids that regulate sleep, helping us sleep more deeply and quickly.
The effect of L-theanine on sleep extends to boys with ADHD, those with schizophrenia, and animals.
Mental Focus
woman that is focused
A 2012 study found that people who took 100mg of L-theanine performed better at an attention task than those who took a placebo. Considering many people find green and black tea to improve their focus, this makes anecdotal sense, too.
Researchers continue to study L-theanine to fully understand its impact on mental focus; early results suggest it can positively impact attention and ADHD.
Reducing Stress & Anxiety
A few studies found that L-theanine combats stress and anxiety. Another study found that L-theanine helped those suffering from schizoaffective disorder or schizophrenia by improving their symptoms and decreasing anxiety.
L-theanine therefore may combat stress while not making you drowsy.
It’s thought that L-theanine reduces our resting heart rate. When you’re amped up, your heart rate increases; however, your resting heart rate lowers when fully relaxed. Thus, if L-theanine reduces your resting heart rate, it makes you feel more at ease.
Immune System
L-theanine may act as an anti-inflammatory, and these are known to combat illness. Some studies suggest that L-theanine makes you less likely to contract the flu or get a cold since L-theanine may boost the immune system.
Helps You Lose Weight
l-theanine may cause a reduced appetite.
when used correctly, L-theanine may help you drop a few pounds.
Heightened Cognitive Performance
Although the research is still being conducted, early findings suggest that L-theanine can improve brain function.
In combination with caffeine, L-theanine may improve alertness and skill with numbers. On its own, this compound may boost your reaction times and attention.
L-theanine may benefit both your physical and mental health, producing neuroprotective effects responsible for boosting in brainpower.
Looking to add some L-theanine to your diet? Plexus Metaburn is a great source of L-Theanine balanced with some other amazing ingredients I will discuss later this week.
Blood Pressure
One study found that those whose blood pressure increased due to a stressful event could lower their blood pressure by taking L-theanine. Caffeine had similar results, but it wasn’t quite as beneficial.
Since high blood pressure puts you at risk of strokes, heart attacks, and more, L-theanine could have powerful effects. Given L-theanine is linked to stress reduction, it makes sense that it might lower blood pressure as a result.