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L-Tyrosine Benefits, Uses, Side Effects and Functions

Discover the Function, Sources and Benefits of the Health Supplement Ingredient L-Tyrosine, or 2-Amino-3-(4-Hydroxyphenyl)-Propanoic acid

Tyrosine – also known as L-tyrosine and 2-amino-3-(4-hydroxyphenyl)-propanoic acid – is an amino acid that is found in certain foods and produced by the body. It serves as a building block of neurotransmitters and protein, and supports proper organ function. Individuals seeking to boost their levels of L-tyrosine can obtain it through food sources as well as in natural health and bodybuilding supplements such as HGH 30,000 Nanograms, HGF-MAX, A-Max 50 and whey protein mixes.

Functions of L-Tyrosine

As an amino acid, L-tyrosine plays a role in protein synthesis. It is also critical for the production of three key neurotransmitters – epinephrine, norepinephrine and dopamine – that support the nervous system and influence mood, and it is involved in the production of melanin (skin pigments). Finally, L-tyrosine helps to maintain proper function of the thyroid, pituitary and adrenal glands, which are responsible for producing and regulating hormones.

Sources of L-Tyrosine

The body naturally manufactures tyrosine from another amino acid called phenylalanine. Dietary sources of tyrosine include soy, eggs, turkey, chicken, fish, dairy (cheese, milk, cottage cheese, yogurt), pork, beef, beans, peanuts, mustard greens, spinach, pumpkin seeds, and seaweed. L-tyrosine may also be consumed as an ingredient within natural dietary supplements.

L-Tyrosine Benefits and Uses

Since tyrosine is involved in producing epinephrine, norepinephrine and dopamine, it appears to help the body manage the effects of stress. Studies suggest that L-tyrosine may help to enhance memory and mental function under physical and psychological stress, including lack of sleep. It also has been shown to reduce fatigue and increase alertness in individuals who are sleep-deprived.

Numerous sources suggest that L-tyrosine functions as a natural human growth hormone (HGH) releaser, also known as an HGH secretagogue. For this reason, L-tyrosine is believed to have a beneficial effect on athletic performance, helping to build muscle and increase endurance.

Side Effects of L-Tyrosine and Potential Interactions

L-tyrosine supplements are generally considered safe for adults. Some people may experience minor side effects such as nausea, headaches and upset stomach, particularly at high dosages. However, individuals who have been diagnosed with hyperthyroidism (overactive thyroid) or Graves disease should avoid L-tyrosine supplements, as they can exacerbate these conditions due to increased production of thyroxine.

Interactions are possible with some medications. L-tyrosine has the potential to elevate thyroxine levels too high when taken in combination with synthetic thyroid hormones, and it may interfere with the absorption of levodopa (L-dopa) in patients with Parkinson’s disease. L-tyrosine supplements may also cause a severe increase in blood pressure when taken with a class of antidepressant medications known as monoamine oxidase inhibitors (MAOIs). More detailed safety information on L-tyrosine side effects and interactions can be found on the University of Maryland Medical Center website. As with any medication or health supplement, it is best to consult your physician before taking dietary supplements containing L-tyrosine.

L-Tyrosine Research and Studies

Numerous research studies have explored the impact of L-tyrosine supplements on mental function, memory and alertness, particularly in relation to physical and psychological stress such as sleep deprivation and cold exposure. One such study published in the Brain Research Bulletin examined the effects of L-tyrosine on cadets during a weeklong military combat training course, and found that supplementation improved cognitive performance while reducing systolic blood pressure. Another group of researchers reported in Aviation Space and Environmental Medicine that L-tyrosine supplements had the ability to counteract cognitive performance decreases in subjects required to perform continuous work after losing a night’s sleep. Similarly, an article in Physiology & Behavior stated that L-tyrosine supplements helped alleviate working memory decrements in subjects exposed to severe cold.

In Amino Acids and Proteins for the Athlete: The Anabolic Edge, author Mauro G. Di Pasquale asserted that amino acids such as tyrosine, arginine, leucine and gamma-aminobutyric acid (GABA) all may potentiate HGH secretion. Research into L-tyrosine’s effects on athletic performance, muscle growth and endurance remains ongoing; however, clinical evidence in support of these benefits has not yet been published.

For additional L-tyrosine research, refer to the PubMed site sponsored by the National Institutes of Health (NIH).

HGH.com Supplements With L-Tyrosine

Athletes, bodybuilders and fitness enthusiasts can harness the benefits of L-tyrosine with natural HGH releasers and bodybuilding supplements from HGH.com:

HGH 30,000 Pills and HGH 30,000 Spray – Available in both capsule and spray forms, HGH 30,000 Nanograms promotes HGH production with a powerful combination of L-group amino acids, including L-tyrosine. These oral supplements support muscle growth, fat-burning, increased energy and other benefits.

HGF MAX – These bodybuilding supplements are formulated to naturally boost HGH production with ingredients such as L-tyrosine and other amino acids, which help to build muscle, enhance muscle tone, increase metabolism and improve stamina.

Anapolan Max 50 (A-Max 50) – Designed to help bodybuilders achieve rapid muscle mass increases, A-Max 50 features L-tyrosine and other active ingredients to promote lean muscle gain, stimulate HGH production and elevate testosterone levels.

Multi-Pro Chocolate Whey Protein – With nearly 500 milligrams of L-tyrosine and 24 grams of protein per serving, Multi-Pro is a complete protein supplement that is intended to help users build muscle, reduce body fat and improve the immune system.

CytoSport Vanilla Whey Protein – One serving of low-fat, low-lactose, CytoSport whey protein contains 3 grams of L-tyrosine and a full 18 grams of protein. It is formulated to aid in developing lean muscle mass and recovering more quickly after intense training.

TakeOFF Maximum Catalyst – Tyrosine is intended to fulfill several functions in the TakeOFF fat-burner formula: raising norepinephrine levels to promote thermogenesis, restoring neurotransmitters to support mental focus and improving thyroid function to boost metabolism.

NxLabs Plasmavol and NxLabs Pump System – These NxLabs supplements contain amino acids such as L-tyrosine to help boost nitric oxide production, improve muscle pumps and vascularity, and increase strength.

References (Function, Sources, Benefits/Uses and Side Effects/Interactions):

NYU Langone Medical Center. “Tyrosine”; published under “Herbs & Supplements”; last reviewed September 2014. <http://www.med.nyu.edu/content?ChunkIID=21794>

University of Maryland Medical Center. “Tyrosine”; published under the “Complementary and Alternative Medicine Guide” on the website; last updated May 7, 2013. <http://umm.edu/health/medical/altmed/supplement/tyrosine>

Presser, Art. “Amino Acids”; Smart Supplementation, published by Huntington College of Health Sciences; 2009. <http://www.hchs.edu/literature/Amino%20Acids.pdf>

WebMD and Natural Medicines Comprehensive Database. “Tyrosine”; published under “Vitamins & Supplements”; accessed September 29, 2014. <http://www.webmd.com/vitamins-supplements/ingredientmono-1037-tyrosine.aspx?activeingredientid=1037&activeingredientname=tyrosine>

Research Sources:

Colzato, Lorenza S.; de Haan, Annelies M.; and Hommel, Bernhard. “Food for Creativity: Tyrosine Promotes Deep Thinking”; Psychological Research; September 2014. <http://www.ncbi.nlm.nih.gov/pubmed/25257259>

Deijen, Jan B.; Wientjes, Cornelis J.; et al. “Tyrosine Improves Cognitive Performance and Reduces Blood Pressure in Cadets After One Week of a Combat Training Course”; Brain Research Bulletin; January 1999. <http://www.ncbi.nlm.nih.gov/pubmed/10230711>

Di Pasquale, Mauro G. “Chapter 6: Physiological and Pharmacological Actions of Amino Acids”; Amino Acids and Proteins for the Athlete: The Anabolic Edge, Second Edition; Boca Raton, FL: 2008; pg. 200. <http://books.google.com/books?isbn=1420043811>

Mahoney, Caroline R.; Castellani, John.; et al. “Tyrosine Supplementation Mitigates Working Memory Decrements During Cold Exposure”; Physiology & Behavior; November 23, 2007. <http://www.ncbi.nlm.nih.gov/pubmed/17585971>

Neri, David F.; Wiegmann, Douglas A.; et al. “The Effects of Tyrosine on Cognitive Performance During Extended Wakefulness”; Aviation Space and Environmental Medicine; April 1995. <http://www.ncbi.nlm.nih.gov/pubmed/7794222>






Increased HGH Levels Can Decrease Your Depression

 
 
 
Increased HGH Levels 
can help your depression

How do Growth Hormone Supplements Help My Depression?

Growth hormone supplements are natural products that improve your body's ability to produce human growth hormone, allowing older adults to improve their muscle mass and bone density while retaining their youthful vigor and slowing down the aging process. Although most individuals take growth hormone supplements to improve their physical health, many studies have indicated that these supplements can have a dramatic positive effect on mental health as well. In fact, multiple studies have shown that supplementing with human growth hormone can alleviate depression.

Evidence for Growth Hormone Supplements Reducing Depression

Several studies, including ones conducted in England, Denmark, Sweden and the U.S. have indicated that supplementing with growth hormone supplements can reverse the effects and symptoms of depression. One report published in the December 1996 issue of the American Academy of Anti-Aging Medicine by Dr. L. Cass Terry showed that among people who took growth hormone supplements, 67% showed improved emotional stability and 80% improved their overall attitude toward life. The study was large, including a subject pool of 900 individuals. Over 300 of these individuals were doctors themselves.

In a more recent study, Dr. Thierry Hertoghe administered human growth hormone supplements to another large body of participants. The study found that HGH supplements could reduce low self-esteem and anxiety by 70%, and depression by a whopping 82%.

Another study, this time conducted in 1998, showed that human growth hormone supplementation can significantly improve sleeping patterns in depressed men. During the study, men diagnosed with depression were found to secrete far less HGH during the initial three hours of sleep than non-depressed men. When the depressed men were given HGH supplements in a second trial, their sleep patterns improved dramatically and they woke up feeling more rested.

How Growth Hormone Supplements Fight Depression in the Brain

A 1996 study in Sweden found that human growth hormone supplements interact with the brain similar to a traditional antidepressant, increasing levels of neurotransmitter B-endorphin in order to produce enhanced feelings of well-being. Growth hormone supplements are also known to reduce levels of dopamine in the brain, subsequently lowering levels of irritability and agitation.
Other studies have found that supplementing with growth hormone can produce the following mental health benefits:
  • Stress reduction
  • Improved concentration and mental focus
  • Improved self-confidence and self-esteem
The physical benefits of human growth hormone supplementation can also fight depression more indirectly. As people age, they often feel depressed because of their increasing inability to perform the physical activities they once could, such as sports, sexual activity and even routine chores around the house. By supplementing with HGH, individuals can restore their youthful vitality and make themselves more physically capable of engaging in exercise activities, which are themselves known to reduce depression and increase self-confidence and well-being. 

HGH Levels can be increased in your body naturally by taking HGH Supplements. This has proven safer (and easier) than HGH Injections. To increase your HGH levels naturally, visit HGH.com.

 







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