Published 2026-10-07
Diet soda or water – which is better for weight management?
Read the story & commentary question
A two‑year randomized trial (SWITCH) followed 493 adults with overweight or obesity in a structured weight‑management program to compare water versus diet beverages. After two years, average weight loss was 4.8 kg for the diet‑beverage group and 3.7 kg for the water group, with no clear difference in weight maintenance or clinically significant changes in blood pressure and cholesterol.
Consider that in a supported weight‑management program, offering diet beverages rather than only water did not show clear disadvantages for weight loss or key cardiometabolic measures over two years.
Consider: Given the trial’s setting within a professionally supported program and loss to follow‑up, how might beverage choice interact with program intensity and participant retention in real‑world practice?
