Impact of Drinking Reverse Osmosis Water (RO Water) on Human bone Density in AL-Najaf City Muhsin Fulath Abdul-Redah MSc Community Health, The Head of Community Health Department, Al-Kufa Technical Institute, Iraq Online published on 8 March, 2019. Abstract Background In the last period, the demand for bottled and filtered water has increased, especially water purified by reverse osmosis method (RO water). However, the latter is considered low-mineral water. This study was aimed to find if there is any effect of drinking RO water on bone density in humans in AL-Najaf Governorate, Iraq. Method cross-sectional comparison research in which 126 people were included and divided into two groups; study group (drinking RO water) and comparison group (drinking tap water). Results There were highly significant differences in water properties values between RO and tap water as the total dissolved solids of RO water was (16 mg/L), less than the standard that developed by WHO. The pH value of RO water was (6.60) tend to be acidic, while the pH of tap water was (7.52) tend to be neutral. There were highly statistically significant differences for all categories of DEXA diagnosis results (Normal, Osteopenia, and Osteoporosis; P≤0.001, 0.0001, and 0.0001, respectively) between study and comparison groups. Also, high statistically considerable difference of (P≤0.0001) presented between normal bone density of persons within the that of persons within the comparison group. Moreover, there was high statistically considerable difference of (P≤0.0001) existed between abnormal bone density of persons within the study group and abnormal density of persons within the comparison group. Furthermore, there was a strong direct positive correlation between drinking RO water and bone density categories (Osteopenia and osteoporosis) with (r = 0.87). Top Keywords Reverse osmosis water, bone density, osteopenia, osteoporosis, tap water, total dissolved solids, DEXA. Top |