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"Teenagers are more susceptible to developing disorders like addiction and depression ... "The brain region traditionally associated with reward and motivation, called the nucleus accumbens, was activated similarly in adults and adolescents," said Moghaddam. "But the unique sensitivity of adolescent DS to reward anticipation indicates that, in this age group, reward can tap directly into a brain region that is critical for learning and habit formation." ... not only is reward expectancy processed differently in an adolescent brain, but also it can affect brain regions directly responsible for decision-making and action selection. ... "Adolescence is a time when the symptoms of most mental illnesses-such as schizophrenia and bipolar and eating disorders-are first manifested, so we believe that this is a critical period for preventing these illnesses," Moghaddam said."

In a 2011 survey, Renee Engeln, Professor of Psychology at Northwestern University and a colleague found that more than 90 percent of college women reported engaging in fat talk - despite the fact that only 9 percent were actually overweight. In another, 2014 survey, she canvassed thousands of women ranging in age from 16 to 70. Contrary to the stereotype of fat talk as a young woman's practice, she found that fat talk was common across all ages and all body sizes of women. Engeln notes that fat talk is not a harmless social-bonding ritual. According to an analysis of several studies published in 2012 in the Psychology of Women Quarterly, fat talk was linked with body shame, body dissatisfaction and eating-disordered behavior. Engeln also found that fat talk was contagious. She ran an 2012 experiment where young women, "confederates" secretly working for the researchers, joined two other young women seated at a table to discuss magazine advertisements. The ads started out innocently enough. One was for an electronics store. Another was for a water purifier. But the third was a typical fashion ad showing a model in a bikini. In the control condition, confederates commented on the visuals in the background of the fashion ad, but avoided any mention of the model or her appearance. In the "fat talk" condition, the two confederates (neither of whom was overweight) commented on the model. One said: "Look at her thighs. Makes me feel so fat." The other responded: "Me, too. Makes me wish my stomach was anywhere near flat like that." Then it was our subjects' turn. In the control condition, when neither of our confederates engaged in fat talk, none of our subjects fat talked. But when our confederates engaged in fat talk, almost a third of the subjects joined in. These subjects also reported higher levels of body dissatisfaction and shame at the end of the study than did their counterparts in the control condition.

"... one thing is growing increasingly clear to many researchers: The word "cancer" is out of date, and all too often it can be unnecessarily frightening. "Cancer" is used, these experts say, for far too many conditions that are very different in their prognoses ... It is like saying a person has "mental illness" when he or she might have schizophrenia or mild depression or an eating disorder."