Eating disorders in the U.S. among ethnic groups were thought to be rare, but recent studies have shown that many cultures are now exposed to the thin beauty ideal. As a result, experts expect to see an increase in eating disorder symptoms among ethnic groups. It is also suspected that eating disorders and weight control behaviors may be increasing among adolescent boys. Although research has shown that eating disorders begin during adolescence, few epidemiological studies have been conducted with teens and those that have examined weight control practices among adolescents are too varied to be able to discern trends.