"Issues in Religion and Psychotherapy" published a study noting Latter-day Saints had more positive feelings toward their bodies than non-Latter-day Saints.
Monika Sandberg, Diane L. Spangler, "Eating, Substance Use, and Body Image: A Comparison of Latter-day Saint and Non-Latter-day Saint College Age Females," Issues in Religion and Psychotherapy: Vol. 31: No. 1, Article 2, April 2007
Regarding body weight and shape, as hypothesized, LDS females endorsed greater investment in appearance, more beliefs that positive feelings, self-worth, and interpersonal and work successes are dependent on appearance, more positive feelings toward their bodies, and less negative feelings toward their bodies than non-LDS females. Non-LDS females endorsed less satisfaction with their bodies and body shape, greater preoccupation with being overweight, and greater attention to body shape than LDS females. Thus, results support consistent findings regarding more general studies of the influence of culture on attitudes regarding body weight, shape, and eating behaviors.