Bipolar Disorder and L-Theanine: What You Should Know

Are you a tea drinker? After water, tea is the most widely consumed beverage in the world and for good reason. You might not realize it, but tea can benefit your health.

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L-theanine is an amino acid found in tea. Although L-theanine has been shown to have many benefits, there is no current evidence that it is effective in treating bipolar disorder.

The EEG scans show increased activity in the alpha frequency band. Alpha waves occur when your body is awake and alert but also relaxed. L-theanine has been shown to relax your brain without making you drowsy.

Researchers believe that L-theanine may control aspects of human brain function. Electroencephalogram (EEG) studies have demonstrated that it can have a direct effect on the brain.

L-theanine makes up 1 to 2 percent of the dry weight of tea. Tea contains about 50 milligrams of L-theanine. Green tea has become a popular dietary supplement. It&#;s also a great source of caffeine.

Green and black teas contain a water-soluble amino acid called L-theanine . L-theanine is a relaxing agent that is known to relieve stress and anxiety. These effects can also be felt in people with psychological disorders, including bipolar disorder. Some people even claim to experience improved concentration.

Tea is also rich in antioxidants, which makes it an even more attractive drink. Antioxidants can be natural or man-made substances, and they help to stop or in some cases delay cell damage. Based on animal studies, the antioxidant effects of tea may also help with your cardiovascular health .

GABA neurotransmitters are all over the brain and stimulate nerve cells involved in anxiety inhibition as well as those that help to induce sleep.

The jitters are commonly associated with caffeine sources, such as energy drinks. The L-theanine in tea keeps the jitters away by increasing the levels of the calming neurotransmitters serotonin and gamma aminobutyric acid (GABA).

You can find higher doses in supplements that are readily available for purchase. Supplements may help to improve your mood as well as your concentration and learning ability. Most supplements contain 200 to 400 mg of L-theanine per pill, but the amounts can vary.

Some with bipolar illness are very sensitive to caffeinated teas, but if taking L-theanine as a supplement and not consuming it through tea, that shouldn&#;t be an issue. Presently, though, there is no data that confirms L-theanine is an effective treatment for bipolar disorder.

Green tea contains L-theanine, but the studies and research done used much higher doses of the amino acid than what is in tea.

If you think you suffer from bipolar disorder, you should see a professional. L-theanine has not been proven to be able to cure you of any disorder, nor has it been deemed a positive treatment option for everyone. Always talk to your doctor before stopping or beginning any new supplements.

Bipolar disorder is a mood disorder that causes severe mood changes. These changes may cause you to hurt yourself or others.

Approximately 20 percent of adults in the United States report taking herbal products to treat medical illnesses, according to The Scientific World Journal . That equals about 1 in 5 adults.

There are studies that have looked at the effects of L-theanine on mental state. One such study was done to see how L-theanine affects people with schizophrenia.

Schizophrenia is a chronic and disabling brain disorder that affects about 1 percent of Americans. People with schizophrenia may have hallucinations, delusions, and an inability to think clearly or properly manage their emotions.

Schizophrenia isn&#;t completely understood, but it has been linked to problems with brain chemicals including the neurotransmitters dopamine and glutamate. Neurotransmitters help brain cells to communicate.

In the study, L-theanine was found to affect glutamate neurotransmission and seemed to improve symptoms in people with schizophrenia. Seventeen people with the mental disorder were given L-theanine supplements along with their antipsychotic medication for eight weeks.

The results showed that L-theanine did improve symptoms as well as sleep quality. The findings seemed to suggest that L-theanine works by stabilizing the concentration of glutamate in the brain.

Another study aimed to see the effects of L-theanine on psychiatric disease-related behaviors in rats. It specifically looked at the effects of L-theanine on post-traumatic stress disorder (PTSD). PTSD is caused by the occurrence of a traumatic event that is not a normal part of human experience.

Many soldiers suffer from this disorder due to the stress and things they see and experience while serving in the armed forces.

The study illustrated the possibility that L-theanine may affect the levels of some neurotransmitters in rats by changing gene expression. L-theanine seemed to produce significant gene changes that may be important in several disorders including:

• PTSD
• anxiety
• mood
  disorders, including bipolar disorder

No such studies have been conducted on humans, and more research is needed. Initial studies, though, have proven to be positive.

It&#;s said to help ease anxiety, stress, and reduce insomnia. Before trying it out yourself, learn more about the potential health benefits, as well as any possible risks or complications.

L-theanine is an amino acid found primarily in green and black tea and some mushrooms. It&#;s also available in pill or tablet form.

If you want to learn more, please visit our website L-Theanine for Cognitive.

Most known for helping people relax, L-theanine has other potential health benefits, including:

Anxiety and stress relief

Sipping on a hot cup of tea can help you feel at ease, and research suggests that it not only relaxes the mind, but it also does so without causing drowsiness (1).

In a review of five randomized controlled trials that included 104 participants, four trials linked L-theanine with reduced stress and anxiety in people experiencing stressful situations (2).

Another study published in the Journal of Clinical Psychiatry focused on people living with schizophrenia or schizoaffective disorder. Researchers found that L-theanine decreased anxiety and improved symptoms (3).

Increased focus

Paired with caffeine, L-theanine may help increase focus and attention.

A small study found that a combination of L-theanine (97 milligrams, or mg) and caffeine (40 mg) helped a group of young adults focus better during demanding tasks. A typical cup of coffee contains 95 mg of caffeine (4, 5).

The study&#;s participants also felt more alert and less tired in general.

Better immunity

Some research suggests that L-theanine may improve the function of the body&#;s immune system. One study published in the journal Beverages found that L-theanine could help decrease upper respiratory tract infections (6).

Another one found that green tea catechins&#; antioxidants&#; and theanine could be effective at preventing the flu (7, 8).

Another study found that L-theanine could help improve inflammation in the intestinal tract. However, more research is needed to confirm and expand on these findings (6, 9).

Tumor and cancer treatment

L-theanine has also been associated with amplifying the anti-tumor effects of certain chemotherapy drugs. Because of these promising findings, researchers expect that L-theanine could also help improve chemotherapy&#;s ability to fight cancer (10).

Although there&#;s no definitive evidence to show that tea prevents cancer, a number of studies suggest that people who regularly drink tea have lower rates of cancer (10, 11, 12).

Researchers of one study in China found that women diagnosed with ovarian cancer who drank at least one cup of green tea a day lived longer than those who didn&#;t (13).

Another study that looked at tea drinkers compared to nondrinkers found that women who drank green tea were 32 percent less likely to develop pancreatic cancer (14).

Blood pressure management

L-theanine may be beneficial for those who experience increased blood pressure in stressful situations.

One study found that people who usually experienced higher blood pressure after specific mental tasks found that L-theanine helped reduce an increase in blood pressure.

In the same study, the researchers noted that caffeine had a similar but less beneficial effect (15).

Some research indicates that L-theanine could be beneficial for a good night&#;s sleep, which could be because it helps to promote relaxation.

Researchers in one study found that doses of 250 mg and 400 mg of L-theanine greatly improved sleep in animals and humans (16).

Also, 200 mg of L-theanine was shown to help reduce resting heart rate, pointing to its ability to promote relaxation (16).

L-theanine may also help boys diagnosed with attention deficit hyperactivity disorder (ADHD) sleep better.

A double-blind study looked at the effects of L-theanine on 98 boys ages 8 to 12 years old. A randomized group was given two 100 mg chewable tablets of L-theanine twice daily. The other group received placebo pills.

After 6 weeks, the group taking L-theanine had longer, more restful sleep. While the results are promising, more research is needed before it can be proven safe and effective, especially for children (17).

Other research suggests that L-theanine improved sleep quality for those diagnosed with schizophrenia (18).

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