In conclusion , the role of dairy products for BMC or BMD has been sufficiently established in Chinese and Caucasian girls and women .
In Caucasian women , drinking milk also reduces fracture risk .
The relevance of dairy produce for the diminishment of osteoporotic risk is still a matter of scientific debate due to the outcome of a few single observational studies .
High intake of milk, but not meat, decreases bone turnover in prepubertal boys after 7 days
Objective : To compare the short-term effect of a high milk and a high meat intake , identical in protein amount , on bone turnover during prepuberty . Setting : A University Department . Design and Subjects : From 28 , r and omly recruited , 8-year-old boys , first 14 were assigned to the  milk group and next 14 to the  meat group .  In each group , 12 boys finished the dietary intervention . Intervention : Milk ( 1.5 l/day ) and meat ( 250 g/d ) , both containing ∼53 g of protein , were given together with the habitual diet for 7 days . At baseline and day−7 , serum osteocalcin ( s-OC ) , bone-specific alkaline phosphatase ( s-BAP ) and C-terminal telopeptides of type I collagen ( s-CTX ) were measured ( immunoassay ) and dietary intake was estimated ( a 3-day weighted food record ) . Results : Baseline s-OC , s-BAP and s-CTX were not significantly different between the groups . After 7 days , the average protein intake increased in both groups by 47.5 g ; the milk group had higher ( P<0.0001 ) calcium intake ; s-OC and s-CTX decreased ( P⩽0.04 ) in the milk group ( −30.9 % ; −18.7 % , respectively ) compared with the meat group ( + 6.4 % ; −1.0 % , respectively ) and s-BAP decreased ( P=0.06 ) both in the milk ( −3.9 % ) and the meat group ( −7.5 % ) . Conclusions : At the equal protein intake , milk , but not meat , decreased bone turnover in prepubertal boys after 7 days . This effect was probably due to some milk-derived compounds , rather than to the total protein intake . Future studies should eluci date the mechanism(s ) of milk-related decline of bone turnover and its relevance for peak bone mass during growth . Sponsorship : University PhD scholarships
In conclusion , the role of dairy products for BMC or BMD has been sufficiently established in Chinese and Caucasian girls and women .
In Caucasian women , drinking milk also reduces fracture risk .
The relevance of dairy produce for the diminishment of osteoporotic risk is still a matter of scientific debate due to the outcome of a few single observational studies .