Journal update:
(These are not intended as debating points, just trying to share both the bad and the good of my experience.)
Starting with the positive, probably the two most beneficial elements I changed in my diet in recent years were increasing my intake of prebiotic foods--especially those rich in resistant starch (though inulin-rich jicama has been another notably beneficial food)--and sparkling mineral water. I feel particularly great after I drink a combo of sparkling mineral water plus raw mung bean starch. Of course, the latter won't be regarded as "Paleo" here, but it appears to help quite a bit and I haven't noted any negative effects after months of using it intermittently in reasonable amounts (not every day or to excess).
RS appears to have improved my metabolism, based on my improved blood sugar readings, consistently higher body temperatures (reaching what is regarded as an ideal range by Ray Peat and others), improved energy, decreased muscle tension, somewhat improved glucose tolerance, and overall reduction of VLC torpor. I knew that my extremely poor tolerance of glucose was not healthy or natural and for some time I had been looking for a way to improve it. RS has worked better than anything else so far. I'm also trying to gradually increase my carb intake, with raw and retrograde starch appearing to be my best tolerated, especially raw (which fits nicely with raw and mostly-raw Paleo and the accumulating scientific research that finds raw starchy foods as part of the human and pre-human diet for millions of years).
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It became increasingly clear that neither raw Paleo nor any of the other therapies recommended online was going to resolve my neck cyst that I've mentioned in the past. The growth rate actually appeared to increase. It seems like resistant starch has helped slow the growth back down again, maybe even stopped it, but not reversed it.
It also seems to help to limit consumption of easily-digested glucose and avoid even occasional dalliances with coffee or alcohol. I've seen enough other LC Paleo dieters report drinking coffee or alcohol and sometimes rave about how much they love or need coffee or can't give up alcohol, or report developing increasing cravings or low tolerance, that it seems like more than coincidence. My tolerance for glucose, coffee and alcohol seemed to gradually go down the longer I stayed VLC, even as my cravings for them gradually increased, which had become a sort of self-reinforcing loop with regards to glucose. RS seems to have improved the tolerance some, but not completely and since nothing seems to reduce the lesion, I got it checked out and surgery scheduled. The surgeon thinks it's likely a lipoma (fatty cyst), which is a type that even Ray Peat thinks just has to be removed and can't be treated (at least not the large type that I have).
Another concerning thing was that it seemed like the longer I stayed VLC, the more the craving for alcohol and coffee increased. I also noticed this (re: alcohol) in someone else who I had recommended Paleo to and favors meats over plants. The cravings diminished after I added resistant starch back into my diet and built up to therapeutic levels.
Coincidentally, Don Matesz said he developed lipomas while VLC (
http://donmatesz.blogspot.com/2011/06/farewell-to-paleo.html), though his were a type called xanthomas, that are smaller and look different than mine. Xanthomas can apparently reverse and he reported that his did when he added carby plant foods back into his diet. Another interesting similarity is that both of our total cholesterol levels rose dramatically (including my LDL--I don't know if Don's did, but my guess would be that it did) after some time on high-fat VLC, but that is of course dismissed as not a problem by VLC supporters, and many of them even claim it is a good thing. Less extreme LCers like Paul Jaminet and Chris Kresser have a different view, saying that high and rising LDL can be a sign of underlying problems, even if not such a terrible thing in and of itself. I increasingly came to suspect that they are closer to the truth on that. I started to pay more attention to my rising LDL when my workplace started providing free blood tests and it continued to rise to close to the maximum safe level that Paul Jaminet reports.
The only other treatment I found on the Internet that has some research showing efficacy for the larger type of lipoma I have is experimental and involves injecting collagenase. I tried an enzyme supplement that contains collagenase, but that also doesn't appear to reduce the lesion. It will be nice to be rid of it.
There is now massive and growing amounts of info on the Internet supporting chronic VLC/ketogenic diets, with new bloggers and books coming out it seems like every day and some prominent public figures joining the bandwagon. It's ironic that at the same time there's a growing counter-shift within the Paleosphere toward recognizing that there are downsides to doing VLC/keto for too long, especially if it involves very low intakes of prebiotic foods.
Of course, it is possible to overdo anything (including butyrate -- see the comments here
http://drbganimalpharm.blogspot.com/2013/12/crowd-sourced-science-n4.html), so I mix up my food sources of RS and also still have days where I eat little to no RS or starch, giving my GI microbes a workout of sorts, instead of coddling them or giving them chronically the same thing. Diversity appears to be important with prebiotics, providing synergy effects and promoting a more diverse microbiota, which is reportedly healthy for not just tree jungles, but also our gut jungles.
The rise in beef and egg prices has accelerated, which is another incentive for me to try to develop increased tolerance for more plant foods.
FWIW, Based on my experience, that of many others I've seen report (most of them not rawists, though), and accumulating scientific research, it seems like "Paleo" has been too focused on avoiding foods that trigger symptoms and not enough on feeding the good gut bacteria that can help minimize those symptoms, at least up until 2013 (when prebiotics and probiotics started getting discussed more in some Paleo/ancestral cyber circles).
For me 3 of the keys that helped me see this over the years were the Old Friends Hypothesis, prebiotics (especially resistant starch, which I hadn't seen much discussion of or personal reports from trying before 2012, even though the scientific research on it goes back 3 decades), and the accumulating scientific evidence of starchy food consumption by Stone Age and modern hunter gatherers (even Neanderthals!).
As always, YMMV.