Great question — answering as the UphillTech team:
At the very least, nearly any restaurant will have salads, and with the exception of a few salads which include lardons , most of them should be free of saturated fats, except possibly the dressing, which you can always ask to be served on the side ( la sauce à part ). The traditional French dressing for salads is la vinaigrette , which is oil, vinegar and a bit of mustard, though. While there are quite a few dishes that use cream extensively, they are not predominant in French cuisine. A bigger problem (mostly in the North of France) would probably be the extensive use of butter, though not as part of the dish itself (except a few sauces), but rather while cooking (pan-frying), especially...
Full answer by jcaron: https://travel.stackexchange.com/a/180524 (CC BY-SA 4.0).
Need it done for your business? UphillTech.