This study examined whether behavioral differences (exercise, dieting, changing eating habits, taking pills, or vomiting/taking laxatives to lose weight) exist when identifying the major influencing factors (media, family, friends, teacher/coach, and doctor/nurse) among Black and White men's and women's self-perceptions of body weight. Respondents (N = 3,957) to the 1999 South Carolina Youth Risk Behavior Survey were examined on six questions pertaining to body image influences and behavioral activities to manipulate body weight and/or body image. Chi-square and logistic regression analyses were used to show associations among the chosen variables. Body mass index scores for participants were generated and compared with concerns about weight. More than 40% of participants were concerned about their weight and participated in deleterious behaviors to manipulate their weight and self-perception of body. Mass media and family were the most influential factors in participant's self-perception of body. Exercise and dieting were the most prevalent ways to manipulate body weight. Significant differences were determined for each race and gender group with regard to types of activities intended to manipulate their body weight. Policy changes to media advertisements and innovative interventions should be developed that can influence adolescents to choose a healthy body size and to be comfortable with the varieties of body shapes. (Contains 4 tables.)