There has been a significant increase in research into body image in men, women and children in the last 20 years. This editorial reviews definitions of the concept of body image, and considers potential health consequences of lowered body satisfaction and increased body concern. The articles that form this Special Issue are contextualized within contemporary research literature around relevant themes. These include sociocultural influences, gender, effects of weight and appearance and perceptual factors. Implications of findings for health psychologists involved in designing health promotion interventions are discussed.