...In one study, mother rats were given the opportunity to press a bar and get a squirt of cocaine or press a bar and get a rat pup to suck their nipples...Those oxytocin squirts in the brain outscored a snort of cocaine every time.
The quote is from the book The Female Brain by Louann Brizedine and I found it on this blog. The bond between a mother and her infant is very stong, stronger than cocaine even. This points to the speical bond between Mary and Jesus.