Keto is great, once you've adapted. It's difficult at first figuring out how to get enough fat into your diet, but in the end you just say yes to grass fed butter, coconut oil, olive oil, and cheese. Lots of great resources online and at the Cedar Rapids Public Library. I never experienced "Keto Flu", but I hear it can take a week or so to stop feeling like you're sick. If you aren't feeling good after the first week, don't push for this change to your diet. There are other methods like slow carb that are very similar, but allow for more carbs through beans, and other starchy veg. Good luck!

I've never gotten keto flue but I've always eaten high protein lower carbs. Maybe that helps in transition. I recently started keto 2 weeks ago and felt great from day 1. I started with 60%fat right off the bat and maybe that helps as well