There was a theory online about how it has an enzyme in fresh pineapple that can induce labor (along with in kiwi and mango) and the enzyme isn't found in canned fruit.
Well, the website said it's supposed to soften the cervix to get it ready for labor? I'm not entirely sure of the details.
I've had a ton of craving pineapple lately. I've eaten like 4 cans and a whole fresh one and half a fresh one in the past 2 weeks. It's basically the only thing I really want.