Abstract
Objective: Previous studies showed that the levels of micro elements may have a contribution to weight loss. Nevertheless, it is not possible to find many comprehensive studies analysing the potential relation between micro elements found in water used for drinking purposes and body composition. The present study aims to assess the relation between micro element levels of drinking water and body composition in normal, fat and obese subjects.
 Methods: The study consisted of 345 female participants, who were divided into 3 groups of 115, according to body mass index (BMI) for leanness, overweight, and obesity; and who applied to Diet Polyclinic of State Hospital. Water samples were analysed with mass spectrometry; and body composition measurements were conducted via bioelectrical impedance analysis. 
 Results: The obesity percentage in females demonstrated statistically positive correlations with cobalt (Co) and selenium (Se) in water for drinking. Also, it was found that the BMI values of females significantly positively correlated with chromium (Cr).
 Conclusion: It may be suggested that women who consume drinking water containing high levels of Co, Se and Cr might be at a greater risk of developing obesity. On the other hand, the lack of knowledge about influence of levels of micro elements in drinking water on blood parameters associated with obesity or tissue remains unclear and deserves more investigation.
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