[Experimental vitamin D deficiency with different dietary calcium-phosphorus ratios]

Excess of phosphorus (the ratio Ca : P = 1 : 2) in a diet of growing rats strengthened such manifestations of vitamin D insufficiency as hypercalcemia and inhibition of animal growth. The data obtained suggest that excess of phosphorus is apparently important for pathogenesis of rachitis and the optimal ratio Ca : P should not be ignored in child diet.