Bone mineral density is not affected by salt consumption in diet
Alper Başaran1, Gül Fidan Sarıbay2, Sabire Akın3, Feza Korkusuz4
1Hacettepe Üniversitesi, İstatistik Bölümü, Ankara
2Orta Doğu Teknik Üniversitesi, Merkez Laboratuvarları, Ankara
3Orta Doğu Teknik Üniversitesi, Sağlık ve Rehberlik Merkezi, Ankara
4Orta Doğu Teknik Üniversitesi, Sağlık ve Rehberlik Merkezi, Beden Eğitimi ve Spor Bölümü, Ankara
Keywords: Bone density; osteoporosis/etiology/prevention & control; sodium chloride, dietary.
Objectives: Studies examining the relationship between salt intake through the diet and bone mineral density (BMD) not only are limited in number, but also report conflicting results. The aim of this study was to investigate the relationship between salt consumption and BMD. Materials and methods: The study sample was comprised of 909 participants (630 females, mean age 49.5±15.8 years; 279 males, mean age 45.9±19.3 years) who voluntarily attended a screening test for BMD. All the participants gave their informed consent for enrollment. Bone mineral density was measured from the L2-L4 spine and total proximal femur using dual-energy X-ray absorptiometry (DXA). In addition, a questionnaire of the World Health Organization was administered after being modified according to Turkish citizens. The relationship between dietary salt intake and the results of BMD from L2-L4 spine and the femur was analyzed using one-way analysis of variance (ANOVA).
Results: The amount of total salt consumption was 0.16±0.23 g/BMI (body mass index) in females, and 0.15±0.13 g/BMI in males. P values showing the relationship between salt intake and BMD obtained from the L2-L4 spine were 0.862 and 0.865 for women and men respectively. The corresponding p values for BMD obtained from the proximal femur were 0.620 and 0.195 for women and men, respectively.
Conclusion: Our data suggest that no significant relationship exists between dietary salt intake and BMD for both genders.