Genetically engineered human insulin is used to treat which disease

It's used to treat Diabetes, and used in place of the insulin your body is supposed to create.

Can ppl. develop self esteem, decision making..

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.