Raw milk is unpasteurised, un-homogenised and full cream, it is not treated with heat Peserving the milks beneficial bacteria, food enzymes, natural vitamins and immunoglobulins (antibodies supporting the immune system).
These health promoting components of natural raw milk are destroyed when heated (such as when pasteurised) and while heating milk does not change the mineral compositions it does change the bio-availability of the milk rendering the calcium less absorbent and a poor source of calcium.