Editing Hyperthyroidism (section)

==Epidemiology==
In the United States hyperthyroidism affects about 1.2% of the population.<ref name=ATA2011/> About half of these cases have obvious symptoms while the other half do not.<ref name=Clin2014/> It occurs between two and ten times more often in women.<ref name=NIH2012/> The disease is more common in those over the age of 60 years.<ref name=NIH2012/>

[[Signs and symptoms of Graves' disease#Sub-clinical hyperthyroidism|Subclinical hyperthyroidism]] modestly increases the risk of cognitive impairment and dementia.<ref>{{cite journal | vauthors = Rieben C, Segna D, da Costa BR, Collet TH, Chaker L, Aubert CE, Baumgartner C, Almeida OP, Hogervorst E, Trompet S, Masaki K, Mooijaart SP, Gussekloo J, Peeters RP, Bauer DC, Aujesky D, Rodondi N | title = Subclinical Thyroid Dysfunction and the Risk of Cognitive Decline: a Meta-Analysis of Prospective Cohort Studies | journal = The Journal of Clinical Endocrinology and Metabolism | volume = 101 | issue = 12 | pages = 4945–4954 | date = December 2016 | pmid = 27689250 | pmc = 6287525 | doi = 10.1210/jc.2016-2129 }}</ref>