What is the evolutionary advantage of migraine?
Susceptibility to migraine is determined by genetic factors and is therefore subject to the forces of natural selection. Migraine is a common and ancient disorder whose prevalence may be increasing, suggesting that a migraine-prone nervous system may be associated with reproductive or survival advantages. Five evolutionary explanations are reviewed that might account for the persistence of migraine: (i). migraine as a defence mechanism; (ii). migraine as a result of conflict with other organisms; (iii). migraine as result of novel environmental factors; (iv). migraine as a trade-off between genetic harms and benefits; and (v). migraine as a design constraint. An evolutionary perspective on migraine allows the generation of important hypotheses about the disorder and suggests rewarding possibilities for further research.
Loder
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Headache and Pain Management Programs, Spaulding Rehabilitation Hospital, and Harvard Medical School, Boston, MA 02114, USA. eloder@partners.org
D005075:Biological Evolution; D003674:Defense Mechanisms; D004777:Environment; D006801:Humans; D008881:Migraine Disorders / Q000235:genetics*