The document discusses research showing that girls' self-esteem typically peaks at age 9 and then declines dramatically as they reach adolescence. By ages 12-13, only 56% of girls say they like their looks compared to 75% at ages 8-9. Half of girls report being on diets by age 9 and 80% of eighth grade girls say they are dieting. Low self-esteem in girls is linked to a variety of negative behaviors and outcomes including eating disorders, cutting, smoking, drinking, violent behavior, school dropout, teen pregnancy, and low academic achievement. Religious affiliation and communication with parents are associated with higher self-esteem in girls.