There are some really interesting & legit studies on why adult humans should NOT drink cow milk. Not just the massive amounts of antibiotics used in production, but for it's nutritional components....eh, who knows.
How about an alternative?
VitaminShoppe (and other sources) have a whey protein powder made by "ON", one flavor is DOUBLE CHOCOLATE and it rocks! We're not talking some watered-down strange-tasting chalk, this stuff is so good even my kids unsuspectingly drink it down as if it was made by Nestle's!!!
I mix half-water, half lite soy milk and 1.5 scoops of the protein powder...it'll give you a really nice & tasty chocolate fix for surprisingly few calories. Wanna get fancy, add a nice taste with a supplement that is suggested to help regulate blood-sugar level: Sprinkle-in some cinnamon (1/4-teaspoon+) and it's really great!!!!!!! Perhaps a bit of blended banana or some blueberries...get some antioxidants & potassium going too. It's all good!!!!