Wall of Mucus

Mucus. Blobs of the stuff are repulsive --even the word is repulsive.

On the other hand, you need mucus to stay alive. Almost every part of the human body that is not protected by a coating of skin is instead protected by a coating of mucus. The mouth, the throat, the nasal cavity, the lungs, ... and for women, the womb --all are protected that way. Invading bacteria have difficulty getting through the coating, which, besides acting somewhat like glue, also tends to contain some anti-bacterial agents.

I'm sure I'm not the only person to have noticed that when one drinks milk, mucus production in the throat area seems to go up.

And of course there are "decongestant" medications that cause mucus production to go down.

The relevance of the preceding is the fact that one of the steps that takes place, between conception and pregnancy, is that a "blastocyst" must penetrate the protective coating of mucus in the womb.

It is known that sometimes the mucus coating is too thick, and pregnancy fails to begin. When this is discovered of a woman who wants to become pregnant, the doctor will prescribe the equivalent of a decongestant, to reduce the amount of womb mucus.

Well, it logically follows that a woman who doesn't want to become pregnant could take some equivalent of milk, which would work to *increase* the amount of womb mucus.

Simple!

But how effective such a birth control technique might be ... remains to be seen.