Msgr. Charles Pope has a masterful post on the language of the human body and the many lies our culture tries to speak through or about it:

One of the great errors of our day is the implicit rejection of the truth that our bodies have something to tell us about who we are and what we are called to do and be. Most moderns see the body merely as a tool of sorts and assertions are made that “I can do as I please with my own body.” Further, that a person is male or female is purely incidental and merely an arbitrary quality one “happens to have.” That our sex should speak to anything deeper than genitals and other “mere” physical differences is set aside to one degree or another. Or so it is said. In effect, it would seem that our bodies have little or nothing to say to us. According to modern culture they are incidental.

Read more . The body has a language that must be spoken truthfully. Beware of False Prophets!