Getting sick under fasting

I'm not sure if this is normal or not but when I was on a somewhat strict intermittent fasting diet, I would get sick every other week (no exaggeration). I did 16:8, which isn't a crazy window imo, and tried to eat balanced meals. I want to lose more weight for my own health and get back into IF because it did give me really effective results (one time I lost 9 lb in 2 weeks!) but nervous about the other health risks.does anyone have similar experiences? what did you do? via /r/intermittentfasting https://ift.tt/8P0NhiI https://ift.tt/Cw58Kgl