In such cases, then, the eating disorder may be a psychological reaction to a biological problem. Between one-third and one-half of patients report having struggled with significant depression or anxiety before their eating disorder began.
There are 251 pages in the UK version and 341 in the US of Harry Potter and the Chamber of Secrets.
Harry Potter and the Order of the Phoenix is the longest book in the series, at 766 pages in the UK version and 870 pages in the US version. It was published worldwide in English on 21 June 2003. Harry Potter and the Half-Blood Prince was published on 16 July 2005; it sold 9 million copies in the first 24 hours of its worldwide release.