There are many different biological approaches that explain the reasons for eating disorders they all have some validity behind them to a certain extent. An eating disorder is a psychological dysfunction that causes a person to change their eating habits to eating less, or more etc.
Firstly a biological approach was studied by Holland (1988) on genetic concordance between identical twins and non-identical twins. Holland was trying to discover the connection between anorexia and genetics through twins. Holland's study consisted of taking pairs of Monozygotic (identical) and Dizygotic (non-identical) with one of the twins suffering from anorexia; therefore there are greater genetic differences between DZ twins than the MZ twins. Holland discovered that MZ twins had a 56% concordance of their genes where as the DZ twins had only 6% concordance. This shows that therefore genetics do play a part in the causes of eating disorders. However Holland's study only focuses on anorexia other eating disorders m...
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