there is some decent evidense that the histidine that is in milk is not actually a 'dead' amino after all, but triggers a rapid teeter-totter turn to glucogon upregulation... a VERY good thing for accessing lipids as energy. I know a bunch of nasty food nerds that do a small activia yogurt prior to killing it specifically to get the quick insulin pop from the milk sugars AND to send that spike over the dam with the glucogon uptick.
Now, skim milk? why? WHOLE MILK and whole milk products. Dont fear the fat, mon, embrace it.