I've been drinking raw organic skim milk from a local farm for a couple years. Milk straight from the teet!!! YUM!!! It tastes sooo much better than pasteurized milk. I don't know if it helps my liver but I've been the healthiest I've ever been in my life since I started drinking it. 5 gallons a week with protein powder and it tastes like melted ice cream!!
I don't worry about the lactose(milk sugar) in my diet, I eat everything I can that's clean to keep growing and easily maintain 10% BF... The small amount in it doesn't have the negative effect that a lot of people think it does.