JEFFERSON CITY, Mo. — Missouri is set to be the first state in the nation to spell out the type of eating disorder treatments that insurance companies must cover, a move advocates say will ensure families have access to care for not just the physical aspect but also the underlying mental issues.Families of those struggling with eating disorders such as anorexia and bulimia have complained for years that patients are kicked out of treatment prematurely and risk relapsing, despite Missouri’s current laws …