You’re not going to get anywhere with keto if you fear good fat. As was already mentioned, Ancel Keys and a few other researchers convinced themselves that saturated fat leads to heart disease (the “diet-heart hypothesis”), and then badly cherry-picked the data to try to make the case using epidemiology, which is the weakest form of evidence. When they tried to do actual experiments on the diet, this was never shown to be true!
Note that “hypothesis” technically means “an idea that I need to devise experiments to test.” The best test is always to try to prove yourself wrong, but it’s the test people often don’t want to do.
Keys and others did an experiment in Minnesota (with a captive test group in mental hospitals) in which saturated fat was replaced by unsaturated fat, and not only was there little effect on heart disease, but cancer went UP. They waited many years to actually publish these data! So, they self-suppressed results that didn’t fit their pet hypothesis, rather than consider that the hypothesis might be wrong. BAD SCIENCE.
Similar results have come out of other studies: little or no effect on heart disease, increase in TOTAL MORTALITY on low-fat [edited: I mis-typed “low-carb” here earlier] or polyunsaturated fat (seed oils) due to increased cancer, stroke, etc. I don’t care if I die of heart disease, I care if I DIE full-stop, so only total mortality is interesting (unless dying later is actually worse due to being incapacitated for longer and bad quality of life, but that’s probably not the case).
But, the McGovern diet committee in the Senate in 1977, guided basically by one lawyer and one medical researcher who was a proponent of the saturated fat hypothesis, accepted this story hook, line and sinker. They used the old idea “we have to DO SOMETHING!!!1!!” to justify the fact that they were trying to use science that did not actually have a clear consensus solution to the problem of heart disease (and thus what they were “doing” might be worse than doing nothing), so this muddled science became official US policy, and thus the “conventional wisdom” for pretty much the entire world. (Critically, this all occurred between the execution of the Minnesota experiment and its much-delayed publication.)
There are several ways you can convince yourself of this:
-
Read the book Lies My Doctor Told Me by Ken Berry MD, which contains the abridged version.
-
Read either Good Calories, Bad Calories by Gary Taubes, or The Big Fat Surprise by Nina Teicholz, which is a pretty similar book (plus some more specific criticism of the Mediterranean Diet hype) that came out 6 or 8 years later. GCBC is about 450 pages plus over 50 pages of references, and TBFS is almost as long. (I wish I had databases for the references of both books and could cross index them to see how similar the reference lists are; I’ll bet they’re > 80% similar). So these are a chore to read, but they really contain a damning indictment of the weakness of the “butter causes heart disease and red meat causes cancer” story.
-
Trust that many people here have read all these books and are not lying to you! Numbers 1 and 2 are “knowledge” and this method is only “belief,” but if it works for you, it will save a lot of time. 