This soda has 34 kcal and 8.8 g sugar per 100 g. A 500 ml bottle packs ~44 g sugar with no satiety. A 17-cohort meta-analysis (Imamura et al., BMJ 2015) linked each daily SSB serving to a 13% higher type 2 diabetes risk.
How should I track Tonic water?
Liquid calories from Tonic water are easy to overlook because drinks do not trigger the same fullness signals as solid food. A meta-analysis (Wehling & Lusher, Am J Clin Nutr 2021) confirmed that people underreport beverage intake more than solid food. Most people pour 30–50% more than the label serving size without realizing it. Use a kitchen scale to weigh your glass or bottle once — you will know your exact pour going forward. This one calibration step can save you from hundreds of untracked calories per week.