Research paper
Dennis EA, Dengo AL, Comber DL, Flack KD, Savla J, Davy KP, Davy BM. Water consumption increases weight loss during a hypocaloric diet intervention in middle-aged and older adults. Obesity. 2010 Feb;18(2):300-307. doi:10.1038/oby.2009.235. PMID: 19661958. PMCID: PMC2859815.
Why we cite it
The first randomized controlled trial investigating the influence of premeal water consumption on weight loss. Provides direct experimental evidence that 500 ml water before each main meal enhances weight loss when combined with a hypocaloric diet in middle-aged and older adults — the primary evidence base for the widely recommended "drink water before meals" strategy. Referenced by 1 k-file (kwa01, 3 references) and 4 companions (1 direct citation, 3 further-reading references).