Lemon has 29 kcal and 2.8 g fiber per 100 g without peel. Rarely eaten whole — most people use juice or zest. Lemon juice squeezed on food adds minimal calories but the citric acid aids iron absorption from meals.
How should I track Lemon, raw, without peel?
Lemon, raw, without peel is a good source of fiber. When tracking Lemon, raw, without peel, 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.