User friendly.  

I propose we add the following content to the genetic section, just after "inheritance rates ranging from 56% to 84%." 
Twin studies have shown a heritability rate of 56%. Study with over 30,000 twins. (Bulik et al., 2006)
Nolen-Hoeksema, Susan. Abnormal Psychology, 6/e. (p. 361) ISBN 978–0–07–803538–8 Yale University: McGraw-Hill Higher Education, 2014. Print.  
It will allow users to draw a better picture of how genes and Anorexia Nervosa are related. It provides a better understanding of the topic with easy to grasp information.

Thank you