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Dear Editor,
Congratulations Danielle Perry and Karenn Chan for their practical approach to showing the present evidence of an association between increasing water intake and change in body weight and composition in overweight-obese individuals published in the July 2022 issue of the Canadian Family Physician [1, 2]. The article includes valuable and practical information for primary care physicians, but I would like to add a current randomized controlled trial to the "Water for weight loss" topic.
Sedaghat and colleagues evaluated the effects of pre-meal water intake on 40 overweight patients with type 2 diabetes mellitus. The intervention group drank 250-500 mL of water 30 minutes before each main meal for eight weeks. Compared to the non-pre-meal water group, there was a significant reduction in energy intake (−174 kcal), fat intake (−21 g), body weight (−1.35 kg), body mass index (−1.28 kg/m2), waist circumference (−3.0 cm), and serum levels of fasting blood sugar (−32.6 mg/dl), low-density lipoprotein cholesterol (−13.37), and copeptin (−2.7 pmol/l). And it is also documented in both children and adults that elevated copeptin levels (C-terminal component of arginine vasopressin) are significantly associated with high body mass index and waist circumference [4,5].
More water – less hunger: In my practical work as a nutrition scientist, over the past 25 years my overweight-obese patients have always confirmed this intervention step, which...
Show MoreCompeting Interests: None declared.