What were the advantages of settling in a river valley?

The advantages of settling in a river valley are largely centered on the benefits that can be reaped from living on the banks of a river. Rivers provide transportation to those living along it and rivers also provide fish and other resources drawn from the river. Also in more modern times rivers have been an important source of power by using turbines and dams to capture the power of the river and converting it into electricity. 

Binging (eating as much food as she wants) then purging it (via laxative/throwing up) would lead lead to a diagnosis of bulimia nervosa.