Can being pregnant cure any diseases?

My kids were both born in the summer, and the two springs that I was pregnant (and the falls right after they were born), I had tremendous relief from seasonal allergies.
Also, when I was pregnant with my first child, I had a couple of warts on my hands. Around the third or fourth month, they all dried up and fell off. And I’ve never had them again. When I mentioned it to my OB, he just shrugged and said. “Yeah, that happens sometimes. Something to do with all the hormones.”
I thought it was quite amazing, but he was not impressed at all.

My mother was showing early signs of parkinsons when she became pregnant with my youngest sister. After little sis’s birth they never (the symptoms) came back. Was it parkinsons or not we will never know but what ever it was dispersed due to a pregnancy.

Osip