On the genetic components of eating disorders: that what that actually constitutes is not a one-to-one inevitability but rather a systemic susceptibility to behavioral triggers. That is, you are genetically susceptible to eating disorders if certain stimuli (i.e. dieting, which almost everyone does at some point in response to fat stigma) result in ED symptoms.
I am thinking of this because I think of how I would parent a girl around this stuff. How I could raise a child who does not lose fifteen years.