Scientific Evidence That Proves L-Tyrosine To Be An Effective Nootropic

L-tyrosine provides people with a state of highly concentrated focus and thinking power for long periods of time and under vast amounts of stress (studying for midterm). It helps mitigate stress-related memory loss (looking at your exam and forgetting literally everything) to allow for a more productive and efficient study session. Powerful Cognition.

1. Effects of l-Tyrosine on working memory and inhibitory control are determined by DRD2 genotypes: A randomized controlled trial

• This study looked at how taking tyrosine supplements affects our ability to think and control our thoughts, and whether our genes can influence how we respond to tyrosine
• The results showed that tyrosine can make us better at solving problems and dealing with conflicting information, but it doesn't seem to help with ignoring distractions (good thing that's what L-theanine is for ;)). When one supplement doesn't help with one thing the other supplement does, that is why this is the best nootropic stack (combination on the market). 
• Overall, this research suggests that our genes can affect how tyrosine improves our thinking abilities

2. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands—A review

• This study explored the effects of taking L-tyrosine on cognitive performance in stressful situations
• It found that L-tyrosine can improve cognitive functions like short-term memory (what did I just read again?) and improved the suppression of impulsive thoughts or behaviours (hmm.. I wonder if they texted me back..) but only when individuals are faced with challenging tasks that induce a stress-like state. 
• Counteracts stress within neurotransmitters in the brain by protecting norepinephrine and dopamine (we all love dopamine! Say thanks to L-tyrosine rn). 
• L-tyrosine shows promise as a cognitive enhancer, particularly in stressful or demanding situations (literally everything a student does on a daily basis: homework, studying, exams, midterms, quizzes, group projects, talking to people in general... you name it)

3. Effect of tyrosine on cognitive function and blood pressure under stress

• The study looked at the effects of giving people tyrosine, an amino acid (building block protein) that can be found in high protein foods, on their brain function and blood pressure
• 70 minutes after consuming L-tyrosine, researchers found that when participants took tyrosine, their performance improved on two tasks that measured memory and attention
• Taking tyrosine seemed to help people do better on memory and attention tasks, especially when they were stressed. It also caused a temporary decrease in blood pressure

4. Food for creativity: tyrosine promotes deep thinking

• This study is about how L-tyrosine can help people think creatively
• L-tyrosine is shown to help people creatively think of different solutions to a problem (convergent thinking)
• This study shows that L-tyrosine can help us on creative tasks that require focus and control and finding solutions to problems (otherwise known as every single piece of homework ever).

5. Tyrosine improves cognitive performance and reduces blood pressure in cadets after one week of a combat training course

• The study examined the effects L-tyrosine on cognitive performance, mood, blood pressure, and a specific chemical in the body in a group of 21 military cadets undergoing intense combat training
• The group given the tyrosine-rich drink performed better on memory and tracking tasks compared to the placebo group
• L-tyrosine supplementation may help reduce the negative effects of stress and fatigue on cognitive performance during challenging military training (If it can do that for military training just think what it can do for you grinding that essay at 1am)

6. Behavioral and cognitive effects of tyrosine intake in healthy human adults

• This study is a review of 15 other different studies focusing on the effects of L-tyrosine. 
• L-tyrosine supplementation can help counteract declines in working memory and information processing caused by challenging conditions like extreme weather or cognitive load
• Positive effects of tyrosine on cognition may be due to its ability to restore depleted levels of certain brain chemicals
• Increasing tyrosine intake can be beneficial for psychological functioning

7. Effects of acute caffeine, theanine and tyrosine supplementation on mental and physical performance in athletes

• For all you student-athletes out there listen up:​
• The study investigated the effects of combining caffeine with theanine and tyrosine on athletes' movement accuracy during intense exercise
• Supplementing with L-theanine, L-tyrosine and caffeine (all included in Boost) can enhance athletes' movement accuracy during exhaustive exercise without changing their mental state
• This suggests that athletes in sports that require quick and precise movements may benefit from using caffeine, theanine, and tyrosine supplements to improve performance

8. Working memory reloaded: tyrosine repletes updating in the N-back task

• L-tyrosine can improve cognitive performance by replenishing the cognitive resources needed for cognitive control operations (cognitive control operations are responsible for focused attention, decision-making, problem-solving, and self-control. Cognitive control operations involve the ability to inhibit irrelevant information, shift attention when needed, update working memory, and flexibly adjust cognitive strategies).
• L-tyrosine was shown to effectively provide the resources needed to support cognitive control operations when they are needed and are being used. 
• Can enhance cognition by replenishing the resources necessary for cognitive control operations

9. Baseline-dependent effect of dopamine’s precursor L-tyrosine on working memory gating but not updating

• The study explored the impact of L-tyrosine, a substance that affects dopamine in the brain, on specific aspects of working memory called gate opening and updating (gate opening refers to the ability to let new information into our memory, while updating involves keeping that information up-to-date)
• Those who initially performed poorly on the memory tasks improved when taking L-tyrosine, but individuals who were already performing well experienced a decline in their performance with L-tyrosine
• The above refers to dopamine levels and having a too high amount of dopamine or too low amount of dopamine will have sporadic results
• Dopamine has a sweet spot where it enhances working memory, but too little or too much dopamine can be detrimental (good thing our nootropic stack helps regulate appropriate amounts of dopamine...)

10. Food for thought: association between dietary tyrosine and cognitive performance in younger and older adults

• The study examined the relationship between tyrosine intake and cognitive performance in both younger and older adults
• This study found found that higher habitual tyrosine intake was associated with better cognitive performance in areas such as working memory (short term memory), fluid intelligence (think logically, solve problems, abstract thinking, and reasoning) and episodic memory (being able to recall memories from the past, like answers to an exam that you studied a day before), regardless of age
• This suggests that maintaining a consistent tyrosine intake through daily nutrition can have positive effects on cognitive function (drink your Boost Coffee everyday!)
• The study suggests that incorporating tyrosine-rich foods (or Boost Coffee) into the regular diet may be beneficial for cognitive health