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ORIGINAL ARTICLE
Year : 2018  |  Volume : 6  |  Issue : 1  |  Page : 13-18

Relationship between body mass index and serum calcium and magnesium in an adult population in Owerri, Nigeria


1 Department of Medical Biochemistry, College of Medicine, Imo State University, Owerri, Imo State, Nigeria
2 Department of Human Physiology, College of Medicine, Imo State University, Owerri, Imo State, Nigeria
3 Department of Community Medicine, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Anambra, Nigeria
4 Department of Family Medicine, Federal Medical Center, Owerri, Imo State, Nigeria

Correspondence Address:
Dr. Jude Nnabuife Egwurugwu
Department of Human Physiology, College of Medicine, Imo State University, Owerri, Imo State
Nigeria
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/njecp.njecp_9_18

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Background: Micronutrients are important risk factors in the assessment of the nutritional status of the obese. Aim: This study aims to investigate the association between body mass index (BMI) with serum calcium and magnesium levels. Materials and Methods: Five hundred adults, aged between 18 and 68 years, resident in Owerri Municipal, Imo State, Nigeria, participated in this study. Serum calcium and magnesium levels were measured after 8–12 h fast. BMI was calculated using the participant's height and body weight. The participants were further grouped into four based on BMI as follows: normal, overweight, moderate, and severe obesity. Results: The mean serum calcium levels of participants with overweight, moderate, and severe obesity were 2.62 ± 0.32, 2.76 ± 0.18, and 2.80 ± 0.26, respectively, for males and 2.34 ± 0.13, 2.46 ± 0.12, and 2.50 ± 0.18, respectively, for females as compared to 2.32 ± 0.41 and 2.02 ± 0.11 for males and females with normal BMI, respectively. Furthermore, the mean serum magnesium levels for individuals with overweight, moderate, and severe obesity were 0.95 ± 0.03, 0.90 ± 0.05 and 0.84 ± 0.03, respectively, for males and 0.91 ± 0.01, 0.88 ± 0.01, 0.81 ± 0.02, respectively, for females as compared to 0.98 ± 0.05 and 0.94 ± 0.02 for males and females with normal BMI, respectively. The serum calcium levels of moderately and severely obese individuals were significantly higher than their counterparts with normal BMI (P < 0.05). Conversely, the serum magnesium levels of moderately and severely obese patients were significantly lower than their counterparts with normal BMI (P < 0.05). Conclusion: BMI correlated directly with serum calcium and inversely with serum magnesium levels in obese patients. Micronutrients such as calcium and magnesium should be considered in the management of obesity/overweight.


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