Hi,
How do I understand "You could change this by outlawing images in which an unattainable body shape is shown as normal"?
Consider a TV ad in which a thin 15-year-old girl is used as a model for women's clothes. Adult women can not achieve such thinness. After seeing such ads many times, normal adult women begin to believe that there is something wrong, something abnormal, with their bodies. The sentence suggests that such ads should be banned.
Best wishes, Clive