Indeed. But on YT, I always see people (commenters and influencers alike) telling everyone fiber is the key for fat-loss and it’s so vital… It’s obviously not, why don’t people know that? My body was happiest on carnivore (I just want my little plant matter too in the long run… and I can’t avoid fruits at all. and I can handle a plantier, carbier diet pretty well as long as I don’t go too far too often) and fiber has the same zero effect on my satiation as volume. Oh yeah volume eating is a big thing too. And I understand it’s great for someone but they act like it would be something common for all humans…
It’s amazing how off people can be when it’s about nutrition. One would think we have so much information now that at least experts know things are individual and fiber isn’t essential… Just some people need it, like carbs. But nope. It’s virtually always volume and fiber and vegs and fruits (maybe I don’t get the right channels? but I do think this are quite common). Some influencers even think a diet without avocado and berries is a wrong diet… Wow. (I am pretty sure most humans didn’t even see an avocado before. Or not often. I definitely saw no one in my first decades…)
Biohacker: Bryan Johnson:
If you are eating a lot of meat, you might not even need to take B-vitamins. The B-vitamins found in whole foods are naturally methylated. It is the supplements that you have to worry about. I believe since I eat fairly close to carnivore, my B-vitamin levels are optimal which is why I can’t take them as supplements.
I don’t really know. That’s the problem with all of this. For instance, depending on the day I get tested and by whichever person you read, my homocysteine is high or near high, and this is supposedly due to a lack of B vitamins. The last one I got was 12.8 umol/L I’ve gotten anywhere between 10.2 to 17.9 over the last 10 years. The “official” high on this last test was 15.2, but others say it should be under 10.
To get this lower as a part MTHFR, I’m supposed to take methylated B vitamins. I think I got a lower value this time due to the methylated B vitamins I’ve been taking, but it’s hard to know since I only get tested yearly.
For my last test, my ferritin was low at 27 ng/mL. On the test, the “low” was 24. I’m concerned about that. But apparently I needed to get a “saturation percent” done for iron, which I did not get done. The last time I got this done, I got a 20 percent, which is the lowest of the low end.
Even though I’m eating a lot of beef, I’ve started taking iron supplements, and I’ll likely keep taking some B vitamins supplements. The issue is always how much to take, and I don’t have a good way to determine that.
Some of the ferritin issue is probably caused by my giving blood, but I got this test done about a month after giving blood. I think my ferritin should have recovered, but I’ve never tested it before giving blood then after. I don’t know what happens.
Anyway, as always, it’s complex. And I don’t have any good answers.
Well, that’s interesting!!!
I know nothing about this except out of curiosity, I just did a little info search on the web. When I looked up causes for high homocysteine, besides deficiencies in B-vitamins, it also mentioned that certain medications can cause high homocysteine and it specifically mentioned Metformin. (This was the AI Overview, so take it for what you will.) You mentioned a while back that you take Jardiance which is also used to treat type 2 diabetes and you’ve been suspicious of it causing your blood sugar spikes at night. If it’s mechanism is similar to Metformin, could that be possibly contributing to your higher homocysteine levels?
That’s possible, but I think they operate differently. And I’ve had “high” homocysteine for well over a decade, but have only been on Jardiance for about 1.5 years.
What I think Jardiance is causing (in addition to the bizarre night fluctuations in blood sugar) is higher triglycerides. Mine used to be close to my HDL (near mid-50), but now are >100, 135 just a few weeks ago.
I found Bryan Johnson’s post about eating meat. I don’t think he did it because he is suddenly becoming a meat eater.
"I went off protocol and ate meat.
While traveling in Australia, I tried to fit in with social norms and ate animal protein for the first time in six years.
Here’s what happened…
It changed my gut microbiome:
+ good bacteria dropped 61% (the fiber-eating kind… Roseburia and Agathobacter)
+ fat handling, bile tolerant bacteria jumped 2.5x (+154%)
It made for a good experiment.
To be clear, I am not against meat. Plenty of omnivores have perfectly healthy microbiomes too.
This only shows that in me, after six years of legumes, pea protein, hemp protein, vegetables, extra virgin olive oil, berries, nuts, seeds and collagen peptides, one week of animal food left this unfavorable signature.
*The scientific details of what we learned: *
*1) Gut bacteria digest fiber to make butyrate and SCFAs, which repair your gut lining and turn down inflammation. I had 61% less which means my gut wall was possibly more vulnerable and I had less protection against inflammation. *
2) The animal food sources had my body generate more bile which acts a bit like a detergent, killing off sensitive good bacteria and enabling tougher, tolerant ones to take over. There’s some early evidence these shifts can happen within a day of eating animal food.
TO BE CLEAR: you eat what you want. I support you. I am not trying to get you to eat what I eat. I’m sharing experiment results from measuring my body."
Bryan Johnson is fascinating because he’s almost translucent like a china cup. 
I feel really bad for him, he seems so alone.
Right. He’s got autoimmune stuff going on. Those ppl gravitate towards keto.
Hard to feel bad for a multi-millionaire, but yes he does seem alone. Even w/ a brand new g/f. I still think he’s making a valid point about human longevity.
I grew up around ranchers and Native Americans, and I keep thinking that the square hearty meals, long days in the sun and brotherhood of horsing around with the other guys with the addition of endless physical labor would fixed the translucent man right up and give him a sense of meaning and purpose. Maybe that’s a sort of funny way to think of things though 