Figure 1. Serum levels of 25-hydroxyvitamin D (left), ratio of fasting urinary calcium to creatinine (middle), and lumbar vertebral bone density expressed as a percentage of theoretical peak bone density of vertebral bodies L1 to L4 (right) in four osteopenic patients. One patient was male (s) and three were female (closed boxes, closed circles, and open circles). All had hypercalciuria before and after discontinuation of use of dietary supplements that contained vitamin D. A time of 0 years was arbitrarily set at the extrapolated time of resolution of vitamin D intoxication. The solid horizontal lines represent the upper limit of normal values.

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