IBS and food poisoning logging

I had the stomach flu last week and I logged everything, even if I threw it up. I had the runs all day too. I would rather log it, than underestimate my intake. When I felt better I gave myself the day to eat at maintenance because I knew I was short on calories. I don't have IBS, but hopefully I answered your question.

if you are sick, just forget logging for a few days. Really. If you're suffering from vomiting and diarrhoea you will be in calorie deficit because your digestive system is emptying itself and you shouldn't be eating that much until it gets better. I can't believe people even consider logging at these times. It's not going to make or break it in terms of dieting success. It's what you do in your normal daily life that does that. Not what you do when you're suffering from an acute illness!!! Seriously! give yourself a break and let yourself recover, and don't start logging again until you're feeling well again. In the meantime, drink plenty of fluids and don't eat food if you're not feeling up to it, and when you feel you can eat, eat something that's very bland and gentle on the stomach, e.g. plain rice or toast.

IBS is a bit different as it's a chronic condition. You should probably just just log whatever you eat, and assume your body's processing it normally. If you're excessively hungry or losing weight too quickly, then eat more, and if you're needing to eat more than calculators predict, maybe what you eat isn't being absorbed so well. But if you're losing weight at 1-2lb a week and not feeling excessively hungry, just log, track etc as though you're not suffering from IBS. You could try eliminating foods that people are commonly allergic and/or intolerant too, because some IBS is actually undisagnosed food allergy/intolerance. If you do this, keep a diary of foods eaten and symptoms, and eliminate and reintroduce foods one by one, so if it does make a difference, you know right away what the culprit is.