“…There is some controversy regarding the incidence of AN, with some studies suggesting an increased incidence of AN in recent years (Eagles, Johnston, Hunter, Lobban, & Millar, 1995;Jones, Fox, Babigan, & Hutton, 1980;Lucas, Beard, O'Fallon, & Kurland, 1988;Milos et al, 2004;Møller-Madsen & Nystrup, 1992;Szmukler, 1985;Willi & Grossman, 1983) and others reporting stable rates (Hall & Hay, 1991;Hoek, 1991;Jorgensen, 1992;Nielsen, 1990). The most common age of onset is between 15 and 19 years (Lucas, Beard, O'Fallon, & Kurland, 1991), although anecdotal reports suggest an increase in the prepubertal period (S. Gowers, Crisp, Joughin, & Bhat, 1991) and in older adults (Beck, Casper, & Andersen, 1996;Inagaki et al, 2002).…”