Like the Paleo Diet, the Keto Diet is low in carbs. But the primary goal of the Keto Diet is to put your body into a state of ketosis, which is when your body uses fat instead of carbohydrates as its primary energy source. When your body enters ketosis, fat travels to the liver and makes an acid called ketones, which enter your bloodstream and are converted into energy.
Of course Wikipedia has a page on the Paleolithic Diet. It is quite thorough. It also isn't clear about the lean/fatty meat debate between the followers of Loren Cordain and a slew of others, and pushes lean meat. It is weak on the variations of the diet. Then it restricts fermented beverages. Even butterflies eat fermented fruit. Why wouldn't our paleo ancestors also?
I’m not going to say I didn’t have some pretty difficult moments. For example, don’t purchase an ice cream maker the day you start your Whole30 and let it sit in your entryway for 30 days to taunt you. I did that; it was dumb. Also, there were points in the program on those days when I felt off that I broke down or wanted to throw in the towel. Feeling bad on top of the normal Lyme symptoms wasn’t great, but I’m glad that I stuck it out.
Looking back on my lifestyle before the Whole30, my personal recipe for making unhealthy food choices typically consisted of being hungry and on a time crunch, which meant I'd choose whatever was most convenient (read: something overly processed from the vending machine). "Whole30 requires you to plan ahead, mainly so you stay 'compliant' and don’t go hungry," explains Liz McMahon, RDN. "Planning out meals and batch cooking ensures you have healthier food available and won’t constantly be reaching for fast food options." Making pre-planning a habit — even when I'm dining out — helps keep me on track even when I'm not following the Whole30.