Determinants of bone mass in Chinese women aged 21-40 years. II. Pattern of dietary calcium intake and association with bone mineral density.
A study on the determinants of bone mass in young women is being carried out among 287 young Chinese women aged 21-40 years. The baseline cross-sectional data show that the mean dietary calcium intake, estimated from the quantitative food frequency method, was 448 mg/day (standard deviation = 219). About 50% of the calcium source was from vegetables and 22% from dairy products. Among women aged 21-30 years, those with a dietary calcium intake of at least 600 mg/day had a 4%-7% higher mean bone mineral density at the spine and femur when compared with those with a mean intake below 300 mg/day. In women aged 31-40 years, subjects belonging to the highest quartile of calcium density (> or = 35 mg/420 kJ) had a 3%-8% higher mean bone mineral density at the spine and femur when compared with those in the lowest quartile (< 20.8 mg/420 kJ). Favorable calcium intake is beneficial in this population of young women with habitual low dietary calcium intake.
Ho
S C
SC
Department of Community and Family Medicine, Lek Yuen Health Centre, Hong Kong.
Leung
P C
PC
Swaminathan
R
R
Chan
C
C
Chan
S S
SS
Fan
Y K
YK
Lindsay
R
R
D000328:Adult; D000704:Analysis of Variance; D015519:Bone Density; D002136:Calcium, Dietary; D002681:China; D004032:Diet; D005260:Female; D006801:Humans
D002136:Calcium, Dietary