Canned grapefruit in juice pack has 37 kcal per 100 g. Juice-packed citrus is the lowest-calorie canned option. The segments are pre-peeled and consistent in weight — easy to track.
How should I track Grapefruit, sections, canned, juice pack?
When tracking Grapefruit, sections, canned, juice pack, weigh the edible portion — after peeling, coring, or removing seeds. The part you throw away does not count, but it can make up 20–40% of the total weight depending on the fruit. A systematic review (Whitton et al., Adv Nutr 2022) found that fruits are among the most commonly misestimated food groups. One more thing to watch: fresh and dried versions have very different calorie density. A handful of dried fruit can have the same calories as a whole bowl of fresh — always double-check which form you are logging.