prozac turns 25 this year. every year thousands of american children are prescribed the drug and others like it. according to the nationald 12 to 19 years old, do take an antidepressant now. is that necessary? or are we overmedicating our children? so joining us to discuss this is the author of the book, coming of age on zoloft. catherine sharp. catherine, welcome. >> thanks, alli. >> in your research in writi the book is it that more teenagers today are in need of anti-depressants and antianxiety medication or are doctors overprescribing it? that's a difficult question to answer. i think there are number of things going on describe the increase and use of these drugs for one thing the stigma to using anti-depressants has gone down. that's a good thing to certain extent. usage explained by other factors such as insurance companies that are more willing to may poor medications than they are to pay for other proven approaches like psychotherapy. we have had a cultural shift where we have medicalized a lot of negative feelings like sadness, anxiety. things that would have been psychological. >> alisyn: that is something. wh