Dietary intake of Brazilian black and white men and its relationship to the bone mineral density of the femoral neck.
OBJECTIVE
Osteoporosis and fragility fractures are an important public health problem. Although bone loss occurs with age universally, the incidence of bone loss fractures varies greatly between racial groups. The aim of this study was to examine the relationship between calcium, protein and energy intake and the bone mineral density of the femoral neck in Brazilian black and white men.


METHODS
This was a cross-sectional study, carried out in a teaching hospital in São Paulo.


METHODS
The participants were 277 volunteer men, aged 50 years or older. The bone mineral density of the femoral neck (FNBMD) was measured by dual energy x-ray absorptiometry. The relationship between FNBMD and calcium, protein and energy intake, as assessed by a three-day food record, was analyzed using multiple linear regression models and was adjusted for age, height, physical activity and education level. The analysis was stratified by race (white and black).


RESULTS
FNBMD presented similar means in the two racial groups (p = 0.538). Protein and energy intake did not show a significant correlation with FNBMD, either in the white or in the black population. Calcium intake showed a strong and independent correlation with FNBMD in the black men (partial r = 0.42).


CONCLUSIONS
Calcium intake was a determinant of FNBMD for black men, aged 50 years or older, but not for the white ones.
Jaime
Patrícia Constante
PC
Heliópolis Hospital, Faculdade de Saúde Pública, Universidade de São Paulo, Avenida Dr. Arnaldo 715, CEP 01246-904, São Paulo(SP), Brazil. constant@usp.br
Latorre
Maria do Rosário Dias de Oliveira
Mdo R
Florindo
Alex Antonio
AA
Tanaka
Tomoe
T
Zerbini
Cristiano Augusto de Freitas
CA
D000367:Age Factors; D044383:Black People; D001837:Body Weights and Measures; D015519:Bone Density / Q000502:physiology*; D001938:Brazil; D002136:Calcium, Dietary / Q000008:administration & dosage*; D003430:Cross-Sectional Studies; D004044:Dietary Proteins / Q000008:administration & dosage*; D002149:Energy Intake / Q000502:physiology*; D005272:Femur Neck / Q000502:physiology*; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D012959:Socioeconomic Factors; D044465:White People
D002136:Calcium, Dietary; D004044:Dietary Proteins