More on milk and ‘calcium depletion’ hypothesis 

I wish to thank the above writer for replying to my letter. Finally, a woman other than Clara Holzer has graced these pages!
Proponents of the so-called "acid ash" hypothesis claim that drinking milk acidifies the body, and that the body compensates for this by pulling alkaline minerals such as calcium from the bones. But it should be remembered that, as stated previously, this is only a hypothesis and not fact. 
Joseph Bennington-Castro pointed out in an article in the Huffington Post that two scientists found the hypothesis not to be valid. Proponents of the acid ash hypothesis use measurements from human urine to support their views; but the ph of human urine does not necessarily reflect the body's actual ph-level. And the above writer stated that some studies have found that drinking milk actually results in alkaline urine. Hence it is not entirely clear that drinking animal milk makes human bones lose calcium.  
Paul
Khon Kaen