Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad for Breast feeders

We started with this book, and after two months gave up. Our child went from being underweight-dropped more than he should have of initial birth weight_, was fussy and crying for hours per day (and night)on this plan, We were unable to continue breastfeeding with Ezzo's approach as well. Our four month old is now much happier, in the upper range for weight, and sleeps just fine through the night. Find another book, and check with the american academy of pediatrics when in doubt.