To try to validate this gross assumption that meat increased our brain size. If it did… Then I shouldn’t have a problem with eating it raw without condiments.
Fresh fish or fresh walnuts on the other hand.
To try to validate this gross assumption that meat increased our brain size. If it did… Then I shouldn’t have a problem with eating it raw without condiments.
Fresh fish or fresh walnuts on the other hand.
It’s highly likely @anon81060937 that our earlier ancestors had a microbiome that enabled them to eat raw meat. And it’s possible that had you started off with small amounts or raw meat and worked your way up to larger quantities, you may have been able to digest it as well.
Also, from what I’ve heard, it was when we started cooking our food that our brains really started to increase in size.
Edits:
Well it sure as hell didn’t do it in 3 days.
And we did have fire too so all in all a pretty daft experiment.
So you doomed yourself to failure and then blamed the diet… ok.
Consistent I guess…
Nice fairytale like I’ve told others.
Eicosanoids(made from PUFA’s), magnesium, growth hormone levels and lower vitamin D are the main nutritional factors which regulate cranial growth and what regulates the production of these factors is love, exercise and eating less often. If we do the math… Is there sufficient PUFA’s with magnesium in meat to increase sufficient neurotrophins which are required to increase cranial size?
Lions eat more meat yet have small brains, small sexual organs, short lifespans and large muscles. This is self-evident.
Here is some actual science.
-https://en.wikipedia.org/wiki/Neurotrophin
-https://en.wikipedia.org/wiki/Prostaglandin
NGF and romantic love
http://www.architalbiol.org/index.php/aib/article/download/149265/21701998
Prostaglandins are powerful inducers of NGF and BDNF production
https://www.sciencedirect.com/science/article/pii/S0014579304002467
Topical Combination of NGF and DHA Increases Rabbit Corneal Nerve Regeneration
-https://iovs.arvojournals.org/article.aspx?articleid=2124740
I read through all your citations and I don’t see how they have any bearing on the comment I made about how cooking food made the nutrients in our food more bioavailable thus helping in brain growth.
But, the articles you cited, seem to support the need for animal products if you want to stimulate NGF and BDNF. At least that’s how my biochemically untrained mind read them.
The affect of romantic love on was fleeting.
The rabbits were fed DHA which is found in meat. The researchers fed them collagen.
And prostaglandins are be made from arachidonic acid which can be made from pufas or obtained from meat.
I’m curious about this because I can find nothing about animal proteins stimulating NGF and BDNF?
Polyphenols (what gives plants their spectrum of colors) that mimic fasting in humans without fasting, DHA and phytoestrogens (where men really get their brains from…lol) seem to be what creates neural repair, neurogenesis and neuroplasticity or NGF & BDNF in humans?
BDNF are the little tiny microscopic nerve fibers (NGF) branching systems like tree roots and branches out in the human brain, the more BDNF, NGF branching, the more complex the branching system gets and the smarter you get?
Other than your eating fat and protein to induce ketosis you can just as well do that with resistant starch which I forgot to put on the list above as the primary BDNF (NGF) factor.
It can easily be dismissed because cooking with actual fire destroys nutrients and produces addictive carcinogens. Fire destroys heat sensitive PUFA’s. Hence why barbecuing isn’t healthy.
The brain had to grow a substantial amount before our ancestors developed the intellect to produce fire and make tools to hunt large animals in the first place.
Prostaglandin series 1 and 2(eicosanoids) are produced from Omega 6 fatty acids while Prostaglandin series 3(eicosanoids) are produced from Omega 3 fatty acids. The initial driver of cranial growth has always been nuts and oily seeds. Then the Omega 3 fatty acids from fish in conjunction of Omega 6 fatty acids had a 2x effect on cranial growth.
I don’t see how bone marrow and the brain of grass fed land animals has more Omega fatty acids than nuts and small fish; pound for pound in regards to availability.
Grass fed meat isn’t high in Arachidonic acid(Omega 6) because green vegetation isn’t high in Omega 6 fatty acids. Animals fed grains/seeds high in Omega 6 fatty acids will contain more Omega 6 fatty acids in their tissues. Modern meat contains more Omega 6 fatty acids thanks to farming.
Because they aren’t picky eaters. And they aren’t eating nuts and/or fish.
Walking upright is an indication of high growth hormone levels daily and the only way to achive these physiological levels is by not eating, not eating poor quality foods and eating high quality calorie dense foods.
Eating meat(land animals) made sure that we survived but it isn’t the driver behind cranial growth unless there’s actual science to say different. I’m open to reading it.
Could we have a citation for that… because I’m pretty sure that its pure conjecture… in fact come to think of it even the citation would be pure conjecture as well although remains of fire have been discovered in humanoid habitation for hundreds of thousands of years.
I would like to see references to support this claim. The brain contains a high percentage of saturated fat and cholesterol. Where do polyunsaturates fit in?
How long do lions live, on average? How does their brain size compare with the brains of other animals as a percentage of total body weight (which seems to be relevant in this connexion). Rats are extremely intelligent (within certain broad parameters) as are many birds, even though their brains are small in terms of absolute weight.
P.S.–Many thanks for your hilarious comments in this thread. Please keep them up.
“…treatments with DHA, NGF, or NGF plus DHA delivered by collagen shield. …”
…Ok…
Human brains mass consists of 60% fat from DHA? Since brain is rich in myelin or myelin sheath that covers the nerves, which contains high levels of cholesterol?
image linkI was not aware that the human brain is made of saturated fat or any percentage thereof?
Eicosanoids = prostaglandins.
-https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5322230/
-https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4590220/
-https://www.google.com/search?q=vitamin+d+inhibit+prostaglandins+synthesis
Larger brain for humans living further away from the equator.
The percentage of fatty acids in the brain largely depends on what each individual eats but saturated fat doesn’t have biological actions like monounsaturated and polyunsaturated fat. It’s just structural. Saturated fat doesn’t have the dynamite factor. Cholesterol is converted into various hormones but we can make enough ourselves and the only people with cholesterol deficiency are those who consume foods which decrease cholesterol levels… beans(https://www.jlr.org/content/38/6/1120.full.pdf), lots indigestible fiber acts as a bile sponge, etc…
https://www.google.com/search?q=percentage+of+fatty+acids+in+brain+aa+dha
Enjoy reading these yourself.
We really need a sex study regarding rabbits?
The diminishing levels via decay means that the effective limit for using c14 to estimate time is about 50,000 years. After this time, there is little if any c14 left. Subsequent work has shown that the half-life of radiocarbon is actually 5730 ± 40 years, a difference of 3% compared to the Libby half-life.
https://www.canadianarchaeology.ca/dating
Tissue levels of polyunsaturated fatty acids during early human development (685.1 KB)
Saturated fat is solid and the nervous system requires it with protetin to provide structural support.
“And it’s mostly made of fat . The human brain is nearly 60% fat by total weight, and that big, powerful brain needs to be provided with certain types of fats (both saturated and unsaturated) throughout life to provide a balance of structural integrity and fluidity to its cells.” Mar 9, 2020