So I didn’t get much in the way of a response on showing me the science between a Protein Sparing Modified Fast or with a Fat supplemented fast. I did some reading out on the internet on both including @richard 's post on how people that are somewhat lean (15-20% BF) would probably need to supplement with fat to get through an extended fast. Since I am at about 20% BF and did a 3 day fast that was fairly difficult for me to get through, I’ve decided to try both ways.
So I’ll do a 5 day PSMF(about 0.8 g protein/lb lbm with minimal fat & carbs) as per Lyle McDonald I’ll take a week off and do some maintenance (or maybe just 2 days of keto feasting) and then do a 5 day Fat supplemented fast (I think about 40 g fat, 0 protein, 0 carbs) and report the results.
I’m working on the specific protein or fat amounts per Lyle McDonald and Richard’s calculator (compared to my own spreadsheet for fat burning calculations). I’ll post my results when I’m done. 5 days may or may not be long enough to show a difference, but I’ll also check blood glucose levels every day. I do question the need to do so since glucometers can vary +/- 20 mg/dl but at least it will give me a ball park idea of where BG levels are sitting. Just for the record, I have not been diagnosed with diabetes and have no other health issues.