White grapefruit has 33 kcal and 7.3 g sugar per 100 g. Slightly higher in sugar than pink varieties but still very low-calorie. The white flesh has a sharper, more bitter flavor.
How should I track Grapefruit, raw, white, all areas?
When tracking Grapefruit, raw, white, all areas, 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.