Editing Tyrosine (section)

==Medical use==

Tyrosine is a precursor to [[neurotransmitter]]s and increases plasma neurotransmitter levels (particularly dopamine and norepinephrine),<ref name="pmid6885965">{{cite journal | vauthors = Rasmussen DD, Ishizuka B, Quigley ME, Yen SS | title = Effects of tyrosine and tryptophan ingestion on plasma catecholamine and 3,4-dihydroxyphenylacetic acid concentrations | journal = The Journal of Clinical Endocrinology and Metabolism | volume = 57 | issue = 4 | pages = 760–3 | date = October 1983 | pmid = 6885965 | doi = 10.1210/jcem-57-4-760 }}</ref> but has little if any effect on mood in normal subjects.<ref name="DietMood">{{cite journal | vauthors = Leathwood PD, Pollet P | title = Diet-induced mood changes in normal populations | journal = Journal of Psychiatric Research | volume = 17 | issue = 2 | pages = 147–54 | year = 1982 | pmid = 6764931 | doi = 10.1016/0022-3956(82)90016-4 }}</ref><ref name="CognBPStress">{{cite journal | vauthors = Deijen JB, Orlebeke JF | title = Effect of tyrosine on cognitive function and blood pressure under stress | journal = Brain Research Bulletin | volume = 33 | issue = 3 | pages = 319–23 | year = 1994 | pmid = 8293316 | doi = 10.1016/0361-9230(94)90200-3 | s2cid = 33823121 }}</ref><ref name="DietNeur">{{cite journal | vauthors = Lieberman HR, Corkin S, Spring BJ, Wurtman RJ, Growdon JH | title = The effects of dietary neurotransmitter precursors on human behavior | journal = The American Journal of Clinical Nutrition | volume = 42 | issue = 2 | pages = 366–70 | date = August 1985 | pmid = 4025206 | doi = 10.1093/ajcn/42.2.366 }}</ref>

A 2015 [[systematic review]] found that "tyrosine loading acutely counteracts decrements in working memory and information processing that are induced by demanding situational conditions such as extreme weather or [[cognitive load]]" and therefore "tyrosine may benefit healthy individuals exposed to demanding situational conditions".<ref>{{cite journal |last1=Jung |first1=Sophie E |last2=Hase |first2=Adrian |last3=ann het Rot |first3=Marije |title=Behavioral and cognitive effects of tyrosine intake in healthy human adults |journal=[[Pharmacology Biochemistry and Behavior]] |date=2015 |volume=133 |pages=1–6 |doi=10.1016/j.pbb.2015.03.008 |pmid=25797188 |s2cid=30331663 |url=https://pubmed.ncbi.nlm.nih.gov/25797188/}}</ref>