I. Aptel et al., Association between calcium ingested from drinking water and femoral bone density in elderly women: Evidence from the EPIDOS cohort, J BONE MIN, 14(5), 1999, pp. 829-833
Although the main source of dietary calcium is dairy products, the calcium
contained in mineral water, which is as available as that of milk, could pr
ovide a valuable source of calcium. We analyzed the data from the EPIDOS mu
lticenter study to evaluate the relationship between both dietary calcium a
nd that supplied by drinking water and bone density measured at the femoral
neck by dual-energy X-ray absorptiometry, The study included 4434 women ov
er 75 years of age who had not received any treatment likely to interfere w
ith calcium metabolism. A significant correlation was found between total c
alcium intake and bone density at the femoral neck (r = 0.10, p < 0.001), A
fter adjustment for the main variables influencing bone density, an increas
e of 100 mg/day in calcium from drinking water was associated to a 0.5% inc
rease in femoral bone density, while a similar increase in dietary calcium
from other sources only led to a 0.2% increase; however, this difference wa
s not significant. The consumption of calcium-rich mineral water may be of
interest, especially in older women who consume little calcium from dairy p
roducts.