Hi KC & Tom,
I've been low saturated fat and ketogenic for about 3 years now. For most of my life I was SAD - Standard American Diet, then around 2011 I went Vegan for a few years as a strategy to keep my doctor off my back who wanted to put me on statins (never went on them). Then in 2014, I learned my ApoE4 status and shortly thereafter I heard about this website and Dr Bredesen, so I went Keto with low saturated fat. Specifically for dietary guidance, I've been following Dr Steven Gundry, who's been testing for the ApoE gene and following tens of thousands of patients for about 17 years. If not familiar, he is addressed in the Wiki. https://www.apoe4.info/wiki/Dr_Gundry%27s_Protocol
Anyway, on the diet, I lost weight, my blood sugar, insulin and HbA1c went down, my inflammation markers went down (I didn't even realize I had inflammation and was heading down a dark health path), my total cholesterol is still in the "yellow" zone but don't care because the individual component markers that matter all went in the right direction, my organ function tests are great, my hormones are good. I am so glad I have learned to eat this way, I plan to eat this way for the rest of my life unless studies prove otherwise is more beneficial. I just hope I've changed in time to make up for the "sins of my past."
So I think what you're doing is wonderful. I am glad you feel great, so often that is not the case as many find they encounter "keto flu" when trying to keto adapt, that makes it hard to keep up the motivation.
Are you monitoring your ketones? I say this because this is one pitfall I often hear, that someone eats low fat and THINKS they are ketogenic, but aren't. There are some reasonably priced monitors out there, at least two that I know of that test both ketones and glucose. Now that I'm adapted I don't measure every day, just periodically to "check in" or to see how I might react to something different.
Another thing, I found that even after starting to burn ketones for a fuel source, i.e. getting keto adapted, my body continued to this adaptation process. I base this on my multi-day fasting experiences in 2016 and 2017. In 2016, I'd been ketogenic and intermittent fasting and on a daily basis for about 1.5 years, yet still had hunger and energy issues on my multi-day fast. In 2017, 2.5 years after changing to a ketogenic diet, my multiday fast experience was much different and it was easier, this told me my body continued to adapt! I thought this was very interesting that adaptation would continue for such a long period of time.
So one week down is great, but keep up the good work!