Dietary Lactose Improves Endochondral Growth and Bone Development And Mineralization

Me: It would seem that from just reading this neat little abstract that the common food product of milk may actually be causing kids to grow taller from not just increased Vitamin D and Calcium intake and density. It seems that the Lactose sugar themselves also help with endochondral growth. I am even willing to make the daring hypothesis that it could be possible that lactose could be the real ingredient in milk that causes kids to grow and maybe it is not from the Vitamin D and Calcium, since there have been many studies done that refuted and confirmed the age old thinking that Milk will increase a kids growing rate and height from the Calcium and Vitamin D intake. However, it is important to know that there is more in milk that can cause growth and height increase than what was previously believed to be in it.
J Nutr. 1988 Jan;118(1):72-7.

Dietary lactose improves endochondral growth and bone development and mineralization in rats fed a vitamin D-deficient diet.

Miller SC, Miller MA, Omura TH.

Source

Division of Radiobiology, School of Medicine, University of Utah, Salt Lake City 84112.

Abstract

Lactose promotes the intestinal absorption of calcium independent of the vitamin D endocrine system. The purpose of this study was to determine the effect of lactose supplementation on endochondral bone growth, bone development and mineralization in weanling rats fed a vitamin D-deficient diet. Rat pups were weaned from vitamin D-deficient dams and fed a vitamin D-deficient diet containing sucrose as the primary carbohydrate source or a similar diet but containing 20% lactose. After 4 wk, body weights, serum calcium levels and endochondral bone elongation rates in the lactose-fed animals were higher than in rats fed the sucrose diet. In addition, bone weights, bone calcium content, percent bone ash of bone dry weight, percent metaphyseal osseous tissues and bone osteoid content in the lactose-fed rats were different from those in the rats fed the sucrose diet. In all cases the changes in osseous tissues that were observed in the animals fed the lactose-supplemented diet were toward normal values as observed in age-matched animals fed a vitamin D-replete diet. The improvements in bone growth and development due to lactose supplementation occurred independent of the vitamin D endocrine system and are likely the result of improved calcium absorption in the intestine.

PMID: 3335941      [PubMed – indexed for MEDLINE] 

 

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