However, the
appearance of an eating disorder is not solely due to the fact that an individual
feels the need to lose weight or be more muscular. Instead, there have been a
number of biological, sociocultural, and psychological factors implicated in
the development of eating disorders. Like most psychological disorders, eating
disorders also tend to run in families (Trace, Baker, Peñas-Lledó, & Bulik, 2013). In a study on anorexia nervosa, researchers
found a heritability of 56% (Bulik,
Sullivan, & Kendler, 2003). This means that genetics seem to carry a general risk for developing
an eating disorder. This risk also appears to interact with the biological
changes of puberty to contribute to the appearance of eating disorders in
female adolescents (Klump, et al., 2012).

On the other hand,
there are several sociocultural and psychological factors that also play a role
in the appearance of eating disorders. Researchers in the field of psychology
have linked the historical differences in the prevalence of eating disorders

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