Comment RESET and I’ll send you the free 7-Day Reset Guide Seminal fluid contains signaling molecules that help modulate the immune response in the female reproductive tract. Not because sperm is an “alien threat,” but because reproduction requires a short window of tolerance for fertilization to be possible. Sperm also carries protective surface proteins that can help it survive long enough to reach the egg. This isn’t the immune system “shutting down.” It’s a temporary balance: enough toleranc