They don't need to be naked for us to understand that they are thin, fat, black and white.I haven't seen this show, but if it really is in the spirit of education of anatomy and promoting a healthy body image, I don't believe it does anything to promote sexual perversion.
Europe has a healthier relationship with the human body. America is more immature and needlessly hysterical when it comes to nudity. Hence, Janet Jackson fiasco.
And I say this as an American who has spent a lot of time in Europe.