Well we totally can't leave Casein out because it serves its purpose used along with whey. That being said when I took a masters level health class (required for my teaching credential) the teacher was against protein powders and pro food saying your body knows what you need and how to process it and by taking in too much protein you can cause organ damage. I'm guessing this was the same stance this other speaker was taking.
----------->I'm sharing info I received in college, so please don't shoot the messenger
