I've found that the lifestyle has also helped me with body image and my own comfort with my body has helped other's with their's.
Many female friends have, at first, been aghast that I will just drop my clothes at a pool party, or while we are laying out.. but many of them soon follow *suit* (haha) after and then later profess it really helped them realize that they are more beautiful than they realized.
I can't speak for the males I've been naked around, only a few have been brave enough to bare it all which seems to be at odds with the norm.