agree with the others that milk is probably the least of his dietary ills.
i see you're a new member here, so just one bit of general advice about communicating your primal enthusiasm to those around you: nobody likes a zealot. if they ask you questions about your new habits then be honest. you can offer them links and articles but very few people are receptive to, "U R DOIN IT ALL WRONGZ".
As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.
– Ernest Hemingway