“Sick” is relative. I have not had a cold, flu, etc in years sins going low-carb Paleo and now Keto but I have my fair share of other, probably permanent health issues. Ill trade a cold for some of this any day but at least I don’t have both.
I’ve been sick one time in the last 3 years and 10 months of being Keto. For the record, I eat only real food, and I do not take any vitamin supplements. I get my blood work done every three months and I’m never deficient in anything. Plus, I feel awesome.