This is the first I have heard about the unripe pineapple and I wonder if that is what happened to me! I have been so ggod and strict on my eating for over a year and for the past week I have been suffering so bad! My husband brought me home a pineapple that I cut up and pre-portioned in snack freezer bags. I have been eating them off and on for the last week or two. I even mentioned when I cut it how it was not ripe! WOW! I can't wait to NOT eat it and see if I feel better :-) Thanks for the info!