Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Please research this man before buying

The author of this book has no medical training, not even a college degree (not that you need one to be a good parent, but some background in studying children is nice for someone giving lactation advice to others). I feel that before I take any advice on childrearing, I check the author out online to see what that medical community and general population think. Usually, there are some people for and some against a viewpoint. But not one, not even ONE doctor or childrearing professional supports this man. He is a Christian evangelist who was kicked out of 2 churches for dishonesty and fabricating background on his viewpoints. Please don't take my word for it, just research him online and make up your own mind.