how does whey help????

I heard it suppose to help us lose :more weight ????? : jumps: do you add it to other foods?? have anyone tried protein shakes??? I was told they make you plateau?crying:I hope not, be an and help me out anyonnnnne???? :

My nutritionist basically told me that the whey protein would keep me from losing my hair and help me lose less muscle and more fat. I've been on it since the day I left the hospital and have not stopped losing weight yet. Hope this helps.