Grape juice has 46 kcal and 11 g sugar per 100 g. It is among the sweetest 100% fruit juices. A 250 ml glass packs ~27.5 g sugar. The natural sugars from juice raise glucose nearly as fast as soda; whole grapes feed slower thanks to fiber.
How should I track Grapefruit juice, white, canned, sweetened?
Liquid calories from Grapefruit juice, white, canned, sweetened 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.