[HN Gopher] Did fermented foods fuel brain growth?
       ___________________________________________________________________
        
       Did fermented foods fuel brain growth?
        
       Author : jdkee
       Score  : 136 points
       Date   : 2024-02-22 17:10 UTC (5 hours ago)
        
 (HTM) web link (news.harvard.edu)
 (TXT) w3m dump (news.harvard.edu)
        
       | giantg2 wrote:
       | If only this were true for my fermented drinks of choice.
        
         | mlhpdx wrote:
         | It may be, as the principle still applies. It'd interesting to
         | contemplate that the "pivotal" mutation may have been something
         | as subtle as a taste preference that lead to the consumption of
         | the "spoiled" food caches, and the resulting surplus of energy.
         | Of course, for that to be the case we'd have been caching food
         | because of some previous mutation, and back and back we go...
        
           | giantg2 wrote:
           | I don't think it applies at the alcohol levels of beer and
           | wine. That tends to cause atrophy with enough use.
        
         | beretguy wrote:
         | Like... kefir?
        
           | mewpmewp2 wrote:
           | Think he meant kombucha.
        
             | giantg2 wrote:
             | Beer and wine
        
               | mewpmewp2 wrote:
               | Oh, what I'm drinking right now - but what negative
               | effects on health could those possibly have? I feel good
               | right now.
        
       | unglaublich wrote:
       | My pet theory is that our advances in brain capacity improved our
       | ability to obtain, plan, prepare and preserve food, paving the
       | way to further brain development. It's a positive feedback loop.
       | 
       | So purposeful fermentation might have played a role, just like
       | fire, and hunting, and gathering techniques, and farming. It
       | probably wasn't a revolutionary and sudden change, but gradual
       | developments.
        
         | radicaldreamer wrote:
         | I wonder if there are natural limits to this... brains so smart
         | that they hinder reproduction and are selected against (maybe
         | we're already there)
        
           | berkes wrote:
           | That's easy: brains so smart that it eliminates all natural
           | enemies causing an exponential population explosion. But not
           | smart enough to overcome the challenges such an explosion
           | must overcome
           | 
           | It's easy because it's exactly where we are now. Strip mining
           | natural resources, runaway climate- and ecological change.
           | And no way to solve it.
        
             | rvnx wrote:
             | Wasn't it a reference to a correlation between
             | https://en.wikipedia.org/wiki/Fertility_and_intelligence ?
        
               | berkes wrote:
               | Not intentional. But thanks for pointing to it. Gives me
               | a lot of new reading material!
        
               | NotAnEconomis23 wrote:
               | Fertility and intelligence is only half of the picture.
               | (an important piece, though) What about intelligence and
               | life expectancy of the individual and of children? Also,
               | what about other types of intelligence? IQ, EQ, etc?
               | While very complicated, a multigenerational sampling with
               | more information is really required. There is so much
               | more to this picture, than a negative fertility
               | correlation.
        
               | kikokikokiko wrote:
               | There is only one intelligence, only one factor that can
               | reliably predict future life outcome. It's what we meant
               | by IQ. All the other BS is just a politically correct
               | invention to avoid inconvenient facts. If high IQ
               | individuals are becoming more and more rare as
               | generations pass, the world of the future will not be a
               | very pleasant, nor at least functional, place to live.
               | Internet, sewage, rockets... these are not things created
               | by "high EQ individuals".
        
               | Anotheroneagain wrote:
               | It doesn't seem like it.
               | 
               | First, let's say you have two brains, one has IQ 160, the
               | other has IQ 60. They are the same volume, neither
               | suffers any brain damage. What is the IQ 60 brain doing?
               | 
               | Honestly, it seems like the Flynn effect has been a
               | disaster upon the human race, when you look a bit better
               | into history. People did live happier lives. All the
               | supposed horrors seem to be a myth. There was more peace,
               | love, honesty and goodness. Maybe they did know better.
        
             | bugbuddy wrote:
             | But I was also told by the smartest people that population
             | declines across the world are the actual real threat. What
             | should I believe?
        
               | berkes wrote:
               | A threat to what?
               | 
               | Because it certainly is a threat to economic growth. And
               | also a threat to "national" safety if you decline, but
               | your neighbor grows.
               | 
               | But it's undeniable that, on global, and millennial
               | scale, exponential growth is unsustainable.
        
               | radicaldreamer wrote:
               | The neighbor thing doesn't seem like a large threat any
               | longer, especially with WMDs (otherwise Russia would be
               | sweating having China as its neighbor in Siberia, but it
               | doesn't seem like a large threat due to Russia being able
               | to defend its territory)
        
               | psd1 wrote:
               | The thing about MAD is that the button only needs to be
               | pushed once. We're on a tight rope until we aren't.
        
               | tejtm wrote:
               | In an exponential growth environment, every group that
               | does not participate in exploding, loses sooner to any
               | group that does (modulo chance).
        
             | bitcurious wrote:
             | In fact, we've got brains so smart they lead to wealthy
             | societies with flat to decreasing populations. Just need to
             | get past the hump.
        
               | berkes wrote:
               | I truly hope we will. But the more I learn about it, the
               | more I get convinced "we" (human civilization) won't make
               | it through.
               | 
               | It doesn't seem like "a hump" but more like a fundamental
               | law of nature: exponential growth will collapse. And do
               | so violently and with chaos.
               | 
               | I'm not talking about "the next 25 years" but more
               | hundreds of years. Though even the timeline makes me
               | anxious lately. I might see parts of civilization
               | collapse due to exponential growth hitting a roof.
        
           | kikokikokiko wrote:
           | The invention of effective, as in ~100% effective, means of
           | contraception marks the beginning of the Idiocracy era, the
           | Idiocracene. Up until 60 or so years ago, even if you could
           | foresee the risks of an unwanted pregnancy, most likely than
           | not you would eventually end up having a child or two during
           | your lifetime. Not anymore. You can see it clearly when you
           | compare the average IQ of a given country's population and
           | the demographics tendency over time. This graph could be
           | swapped with average children per woman and it would look
           | basically the same:
           | 
           | https://worldpopulationreview.com/country-
           | rankings/average-i...
           | 
           | The future belongs to the individuals, on any species, that
           | are best adapted towards reproducing. Human beings are just
           | another animal subjected to natural selection pressures. It
           | seems that, usually, if you have too high of an IQ you simply
           | refuse to have kids.
        
             | tsol wrote:
             | To be fair that last part was probably always true. The
             | future belongs to the next generation, and not everyone
             | values having kids. Probably why most major faiths
             | encourage having kids. The people who were too smart to
             | have kids died out along with their ideas. It's like
             | survival of the fittest, but with ideas. I have a theory
             | that long in our past we've went through periods of
             | secularization like our current modern age. It's just a
             | phase that dies out when the people who believe it do.
        
               | kikokikokiko wrote:
               | Even so, high IQ was a trait that was transmitted through
               | the eons, ergo high IQ individuals in the past used to
               | still have children. I don't think your theory reflects
               | the differences between the past and today's
               | contraception technology tools.
               | 
               | Think of a high IQ man in the late 1700. He can see that
               | having children incurs enormous costs, both financially,
               | emotionally, in terms of time, freedom etc. He can choose
               | to never marry, and just keep being a womanizer. He may
               | have LOTS of unrecognized offspring, that are very hard
               | to be attributed to him, and so pass his genes along. He
               | just want to have sex, reproducing is not at all in his
               | mind. Sex is good and he likes it, so he does it. That's
               | the trick nature plays in order to make 1700 man to pass
               | his genes.
               | 
               | Now in the 21st century, basically no high IQ man would
               | go around having unprotected sex, since the costs
               | associated nowadays are still enormous, probably even
               | more so than 300 years ago, and today those costs are
               | easily enforceable through the judicial system. So 21st
               | century high IQ man, on average, will have a LOT less
               | children than he used to have in the past. Sex is still
               | good, and he will have a lot of it. But now nature's
               | trick stopped working. The sex drive per se is not
               | effective anymore when coupled with a high capacity brain
               | that wants to avoid the costs of having to care for
               | another human beings. So, this trait, high IQ, will be
               | selected out of the gene pool over time.
               | 
               | In the case of high IQ women it's the same story. In the
               | past, with a lot less effective and readily available
               | contraceptive methods, smart women were probably a lot
               | more at risk of having unexpected pregnancies. Nowadays,
               | unexpected pregnancies are basically an IQ test for
               | women.
        
               | Anotheroneagain wrote:
               | Maybe high IQ has a drawback.
        
               | suoduandao3 wrote:
               | If your model were accurate it would imply high IQ and
               | psychopathy would co-select wouldn't it? I know
               | psychopaths tend to think they're smarter than anyone
               | with ethics but doesn't the opposite correlation tend to
               | hold?
        
               | kikokikokiko wrote:
               | If I'm not mistaken, a high percentage of psycopaths have
               | high IQs. It's one of the classic profile traits used to
               | represent the stereotipical psycho.
               | 
               | edit: I searched a little bit on this and it seems that
               | it was just a myth propagated by movies and a few very
               | famous cases, i.e. Ted Bundy. But anyway, I do not see
               | how you can make an argument from I wrote on the original
               | post implying a correlation between psycopathy and high
               | IQ. Is it the avoiding of having children, since it's an
               | effective burden on the prospective father? It's just a
               | fact, sexual drive was enough to make a man reproduce in
               | the past. Not anymore. Natural selection wins again, the
               | rules of the game changed, so you're out.
        
             | icandoit wrote:
             | If high IQ jobs offered in-building day care as a perk this
             | trend would completely reverse.
             | 
             | Convert the parking garage in the basement into a day care
             | and you'll have phd-level employees for life. Changing jobs
             | for even double the pay would be completely unaffordable.
             | 
             | The negative correlation between education and family size
             | is a function of the cost of raising children in a city. If
             | the cost is reduced then the correlation becomes nuetral or
             | even positive. There is no such correlation in a rural
             | setting. This is a bottleneck in the talent pipeline.
             | 
             | Consider this paper (from Indonesia) in which concluded
             | that the relationship can change over time, as a function
             | of policy:
             | 
             | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831397/
        
               | drakonka wrote:
               | I do not think just adding a daycare will make having
               | children suddenly make sense to many people - at least
               | not enough to warrant such a blanket statement about it.
               | Aside from simply not wanting any, there are so many
               | reasons to not have children aside from daycare, plenty
               | of them not negatable by policies or financial
               | incentives.
        
             | suoduandao3 wrote:
             | Eh, it's a worrying scenario but I think it would be taken
             | care of by intertribal competition. The people of Idiocracy
             | would be easy pickings for a group of raiders that prized
             | intelligence highly.
             | 
             | Really, the only two countries that are combining a
             | knowledge economy with an expanding population are Israel
             | and India, both of which essentially have a tech-worker
             | economy subsidizing and intermarrying with a bronze-age
             | economy. That seems like the likely actual solve, a few
             | ivory tower cities surrounded by amish country. Every now
             | and then an Amish tests into the cities or a city-zen
             | absconds to a simpler life, but the net flow is generally
             | intellectual country types moving into the tech hubs.
        
           | candiddevmike wrote:
           | There was a documentary that explored this: Idiocracy.
        
           | Bjartr wrote:
           | Brains take a _lot_ of energy, having a brain bigger than
           | life demands can be a liability and less fit than a dumber,
           | but more energy efficient, variant.
        
           | suoduandao3 wrote:
           | We're probably already at a point where we can't just make
           | them larger - human births are horrifically dangerous
           | compared to other animals, likely because the heads are so
           | big.
           | 
           | Greater neuron density is probably still possible though.
           | Just need to evolve to normalize the greater nutrient
           | requirements.
        
           | saalweachter wrote:
           | It's important to remember that there's not a "make brain
           | smarter" slider that evolution is slowly sliding to the
           | right.
           | 
           | Our genes code for proteins which are expressed in different
           | quantities and have different effects on multiple parts of
           | our biology and growth that lead to operational differences
           | in our brains that lead to patterns that might be considered
           | "smarter" in some circumstances and is beneficial in some
           | environments.
           | 
           | Take, for example, something near and dear to many of us on
           | HN, hyperfocus.
           | 
           | Is being prone to hyperfocus on subjects that interest us
           | making us "smarter"? Is it "beneficial"?
           | 
           | Well, sometimes, in some ways, in some environments. If you
           | can hyperfocus on something that has economic value in a safe
           | environment, you can make a lot of money and be very
           | successful. If the things you want to hyperfocus on aren't
           | particularly useful or you end up neglecting your actual job
           | or relationships because of it, or if you're a caveman who
           | was supposed to be keeping an eye out for lions and not
           | counting how many leaves are on different kinds of plants,
           | you'll be less successful.
        
         | Anotheroneagain wrote:
         | I find it rather unlikely, considering that bears can consume
         | bascally any other living thing, with the brain size below any
         | homo species.
        
         | Melatonic wrote:
         | Probably true. I have always also wondered if the use of
         | natural vessels contributed to our knowledge of fermentation -
         | early humans made extensive use of Gourds and animal products
         | to make vessels for holding food and water. Definitely possible
         | that natural yeasts and bacteria could have came with these
         | natural vessels (or early humans could have even found ways to
         | add them in a way that meshed well with the interior wall).
        
           | alangibson wrote:
           | You dont even need to take it that far. Leave anything with
           | sugars out for a few days and you'll get fermentation. I'd
           | bet that humans developed intentional alcohol production
           | before language. Leave foraged fruit in a depression in a
           | rock and you'll have wine in a few weeks.
        
         | agumonkey wrote:
         | I wonder if the main attractors are not eating, breathing,
         | balancing.. any effort toward this has infinite budget in your
         | decision center.
        
       | thisislife2 wrote:
       | Related: _A surprising food may have been a staple of the real
       | Paleo diet: rotten meat_ -
       | https://www.sciencenews.org/article/meat-rotten-putrid-paleo...
       | 
       | Is the process of rotting also part fermentation?
       | 
       | (God, I hope this doesn't start a new fad of eating rotting meat,
       | among the Paleo dieters).
        
         | mlhpdx wrote:
         | Well, rotting increases the accessible carbs, which sounds
         | antithetical to the neo-paleo diet. Hopefully we're safe from
         | the new "unpreserved meat" fad.
        
           | stephc_int13 wrote:
           | Well. Aged beef is a thing. And aged poultry has been a thing
           | for a long time.
           | 
           | And if you ask the northern people and some in Africa, aged
           | fish is a delicacy.
           | 
           | Aged means controlled rot. Pretty much like fermentation for
           | cabbage etc.
        
         | collyw wrote:
         | Fermentation is generally considered anaerobic (without oxygen)
         | breakdown of food. I assume rotting usually involves oxygen.
         | (Maybe someone can nitpick that definition).
        
           | Melatonic wrote:
           | Not always true - there is also aerobic fermentation. You are
           | right in that many ferments require anaerobic conditions
           | however it really just depends on the desired result and
           | bacteria involved.
           | 
           | Kombucha, for example, requires oxygen and is mostly an
           | aerobic fermentation. In order to carbonate, however, it goes
           | through a short anaerobic step at the end (which also causes
           | it to switch from producing organic acids to producing
           | alcohol). This is usually done during the bottling process
           | since the bottle is sealed.
        
           | giraffe_lady wrote:
           | That's the microbiological definition that a scientist would
           | use. In food it is less well defined and usually just means
           | something close to "intentional use of microorganisms in food
           | production". Yeast does both aerobic and anaerobic metabolism
           | but both are considered fermentation by bakers & brewers.
           | Acetobacter is aerobic and vinegar making is considered
           | fermentation. Koji is even farther out and usually still
           | considered fermentation by fermenters.
        
         | giraffe_lady wrote:
         | That already happened, they use the euphemism "high meat" for
         | it.
         | 
         | But, it really is almost impossible to draw a clear line around
         | fermentation that doesn't include something someone considers
         | rot. "Controlled spoilage" is definitely a useful way to think
         | about fermentation and it is still spoilage.
        
         | Modified3019 wrote:
         | "High meat" is a thing for some, due to the effect that
         | consuming the massive amount of B vitamins generated can have.
         | In particular fermented liver comes to mind.
        
           | mtlmtlmtlmtl wrote:
           | There is no real effect from B vitamins unless there's a
           | deficiency. And the niacin form of b3 can have some negative
           | side effects in high doses. But mostly excess B vitamins are
           | just excreted in urine without doing anything at all.
        
             | notamy wrote:
             | B6 is also quite toxic in large amounts.
        
         | philip1209 wrote:
         | Garums are one type of fermentation with origins in rotting
         | fish: https://en.wikipedia.org/wiki/Garum
        
           | porphyra wrote:
           | There's also an ancient type of sushi:
           | https://en.wikipedia.org/wiki/Funazushi
           | 
           | I recently had Vietnamese fermented pork:
           | https://en.wikipedia.org/wiki/Nem_chua
        
         | kyllo wrote:
         | Ever had a dry-aged steak?
        
           | 1270018080 wrote:
           | The steaks where they cut off all of the rotten parts so
           | you're not eating rotten meat? Yeah.
        
             | xutopia wrote:
             | A fermentation process occurs deep within the meat tissue.
             | The outside parts are usually moldy but not rotten if done
             | correctly.
        
               | jjulius wrote:
               | Right. The entire steak ages and changes, not just the
               | exterior. Even so, some places, like Flannery Beef, will
               | blend some of the ends into their "adventurous" burger
               | blend.
        
         | xenonite wrote:
         | Sausages are fermented meat :)
        
       | retrac wrote:
       | One thing I rarely see noted in these discussions is that no
       | other animal treats or processes their food like humans, even
       | without fire or fermentation. We effectively pre-chew our meals
       | with our hands, breaking everything into a nice bite-sized
       | pieces, with mashing or grinding of what would otherwise be too
       | hard to eat. We will sort through thousands of tiny berries
       | carefully, to make sure we don't eat something unpleasant. We
       | will go hungry even when edible food is around, because we know
       | it will be even more ripe later.
        
         | Melatonic wrote:
         | We also eat a huge variety of food (probably more than any
         | other animal) so it makes sense that we need to be more picky.
        
         | NewJazz wrote:
         | .... Pretty sure there are plenty of animals that store food
         | for winter, or mash and grind nuts, or sort through berries.
        
         | yieldcrv wrote:
         | plenty of species delay gratification, and with food, in the
         | ways you described and other ways
         | 
         | do you need examples of that? do you have a GPT4 subscription?
        
         | DarkNova6 wrote:
         | There are ant colonies that grow their own fungi.
        
           | NewJazz wrote:
           | I knew about aphid farming, did not know some ants grow
           | fungi!
           | 
           | https://www.mcgill.ca/oss/article/did-you-know/farmer-
           | ants-a...
           | 
           | https://en.m.wikipedia.org/wiki/Fungus-growing_ants
        
         | someuser2345 wrote:
         | > We effectively pre-chew our meals with our hands, breaking
         | everything into a nice bite-sized pieces, with mashing or
         | grinding of what would otherwise be too hard to eat
         | 
         | Crows use cars to break open nuts they would otherwise not be
         | able to eat; eagles drop turtles to break their shell.
         | 
         | > We will sort through thousands of tiny berries carefully, to
         | make sure we don't eat something unpleasant
         | 
         | When orkas kill sharks, they only eat the liver of the shark
         | and leave the rest alone. Wild civets also choose only the best
         | coffee berries, which is part of why we make coffee from their
         | poop.
         | 
         | > We will go hungry even when edible food is around, because we
         | know it will be even more ripe later.
         | 
         | I don't think we go hungry, we just look for better food
         | elsewhere until that edible food is fully ripened.
        
       | Melatonic wrote:
       | I do not have any expertise specifically in fermented food and
       | brain health however I always found it super interesting that
       | pretty much every culture (both independent of one another and
       | sharing with cultures close by) came up with their own unique
       | sets of fermented foods. Unfortunately most of these are now
       | forgotten (mainly with the advent of refrigeration and mass
       | farming).
       | 
       | Everyone knows about standard types of yogurt and pickles and
       | whatnot - there is a whole world of legume ferments (mainly
       | beans) that use much more 'advanced' types of microorganisms.
       | Examples would be things like Natto from Japan mentioned in the
       | article (using Bacillus Subtilis). Unlike the simple yeasts that
       | break down milk sugars in yogurt and produce various organic
       | acids (like acetic acid for example) the bacteria in Natto can
       | consume the resistant starch in beans and produce short chain
       | fatty acids like Butyrate (very beneficial for health) AND can
       | break down the complete protein in soybeans into their
       | constituent amino acids. I believe Natto originally came about
       | because cooked and cooled soybeans were then wrapped in rice
       | leaves for transport and Bacillus Subtilis happens to naturally
       | live on those leaves.
       | 
       | It is also really unfortunate that in the west we miss out on
       | tons of fungi based foods (not talking about anything psychedelic
       | here) as many mushrooms contain tons of prebiotic fiber like
       | substances that feed the probiotics already found in our gut.
        
         | wil421 wrote:
         | They came up with fermentation because they needed a way to
         | keep foods from spoiling. Same with salting, smoking, or dying
         | out.
         | 
         | The interesting part to me is the first person who tried the
         | fermented food or the animal meat that fell into the ocean and
         | brined.
        
           | andrewflnr wrote:
           | They were probably really, really hungry. That expands your
           | horizons for what's edible.
        
             | someuser2345 wrote:
             | They might also have just been bored.
        
               | andrewflnr wrote:
               | Eh, maybe their rowdy teens, but being bored enough to
               | eat something that may actively harm you is a luxury that
               | I don't think a lot of early hominids had. Living off the
               | land with primitive tools is a lot of work even when it's
               | going well.
        
           | buovjaga wrote:
           | It's not only about avoiding spoiling, but making some plants
           | edible in the first place [1] or making them more digestible
           | [2].
           | 
           | 1: https://en.wikipedia.org/wiki/Cassava#Preparation
           | 
           | 2: https://en.wikipedia.org/wiki/Nixtamalization
        
             | excitom wrote:
             | Another example: Olives
        
         | pyrale wrote:
         | > It is also really unfortunate that in the west we miss out on
         | tons of fungi based foods
         | 
         | Speaking of what I know, there are plenty of fungi-based dishes
         | in Europe. Mushrooms are a staple of many traditional recipes.
         | Mushrooms that can't be conveniently farmed are rare in cities,
         | but they are certainly not rare "in the west".
        
           | piva00 wrote:
           | Yeah, I go pick mushrooms every year in Sweden, have even
           | found my own little secret spot to get prized Chanterelle
           | every season.
        
         | pradn wrote:
         | > It is also really unfortunate that in the west we miss out on
         | tons of fungi based foods (not talking about anything
         | psychedelic here) as many mushrooms contain tons of prebiotic
         | fiber like substances that feed the probiotics already found in
         | our gut.
         | 
         | You're right that we get far fewer varieties of fermented
         | foods. It's notable how certain cultures go very far in some
         | directions, like how many types of lentils/legumes are used
         | commonly in India, and how many types of chilis are used in
         | single dishes in Mexico. Japan's in that direction for
         | fermentation, perhaps.
         | 
         | French cuisine deeply relies on mushrooms for umami and
         | richness. There's a rich mushroom culture in France - a bunch
         | of varietals are used.
         | 
         | I think we're going to eventually come to a point where we
         | consider fermentation a sort of "food group". Many cultures had
         | cheese, yogurt, kimchi pretty much every day - the probiotic
         | benefits are great.
         | 
         | At the very least, being able to eat a variety of (fermented)
         | foods in winter must have reduced the monotonous dreariness of
         | the season - and helped improve nutrition, too.
        
       | philip1209 wrote:
       | This previous thread about "Homemade Sriracha" had some fun
       | discussion about basic at-home lacto-fermentation, if that
       | interests you:
       | 
       | https://news.ycombinator.com/item?id=37469590
        
       | jiocrag wrote:
       | Questionable. Plenty of animals cache, and therefore "ferment,"
       | their food. Why have they not developed hominid brains?
        
       | stephc_int13 wrote:
       | Hunting probably helped a lot. The ability for a tribe to eat
       | large animals is something that likely helped humans benefit from
       | the different tradeoff of brain size/guts size.
       | 
       | I am not convinced that fermented food helped as much as meat.
        
         | timeon wrote:
         | Maybe you could publish a paper.
        
         | sph wrote:
         | Keep in mind that Harvard dietary research is notoriously anti-
         | meat, due to having a large number of Seventh-Day Adventist on
         | board.
         | 
         | It makes absolutely no chronological sense to assume fermented
         | foods to have been in our diet before meat, and has been
         | theorized already that our brain size was only possible thanks
         | to eating highly caloric fat and protein from animals. Imagine
         | how much time we'd have wasted just feeding on grass and roots
         | just to have enough energy to maintain our massive brain.
         | 
         | Though it's hard to say in evolution whether the chicken or the
         | egg came first, it's pretty simple: scavenge meat left from
         | predators, enormous amount of caloric surplus, which
         | concurrently enables expanded brain and a lot of "free time"
         | not spent thinking about food, time that could be spent
         | creating tools to make feeding even easier. The rest is
         | history.
         | 
         | This is also the reason human babies are so helpless: our
         | brains are so large and energy-intensive that it takes years
         | after birth for it to finally develop.
        
           | account-5 wrote:
           | > Though it's hard to say in evolution whether the chicken or
           | the egg came first...
           | 
           | I thought it was obvious the egg came before the chicken
           | because: dinosaurs. ;)
        
           | saalweachter wrote:
           | It's worth noting that most animals, even animals you think
           | of as herbivores, will opportunistically eat meat.
           | 
           | A video of a deer catching and eating a bird went around a
           | while back.
        
           | andrewflnr wrote:
           | The question is fermentation vs cooking, not fermentation vs
           | meat. Still a little unusual, but not as ridiculous as you're
           | making it out to be.
        
         | 11235813213455 wrote:
         | That's a common opinion, but it's rather whatever was there, in
         | cold climates large animals, in hotter climates there was
         | plenty vegetables
         | 
         | What really helped humans I think is more their morphology,
         | their incredibly precise hands
        
       | rspoerri wrote:
       | How cooking might have influenced brain development, from tedx:
       | 
       | https://m.youtube.com/watch?v=_7_XH1CBzGw
        
       | philip1209 wrote:
       | For people interested in eating at fermentation-focused modern
       | restaurants -
       | 
       | - Noma is the obvious (expensive) choice and the author of an
       | eponymous fermentation book.
       | 
       | - Silo in London is a lesser-known restaurant that does a lot of
       | in-house lacto fermentation and garums
       | 
       | If you have any other to add, please to comment.
       | 
       | (I specify "modern" because a lot of traditional cuisines
       | incorporate fermentation, such as kimchi, sauerkraut or even koji
       | in soy sauce)
        
         | 2024throwaway wrote:
         | Noma is closing at the end of this year unfortunately.
         | https://www.vox.com/future-perfect/2023/1/14/23553765/noma-r...
        
           | philip1209 wrote:
           | When I was there in November, they talked about it more as a
           | "reinvention". I think it will move away from fine dining and
           | toward D2C products with pop-ups, but it won't completely go
           | away El Bulli-style.
           | 
           | Noma has gone through multiple "Versions", and with every
           | major version change they publish a book. So, we can at least
           | hope for a cool book in 2025.
        
         | ggpsv wrote:
         | For anyone interested in fermenting foods themselves, look into
         | Sandor Katz.
         | 
         | I found one of his books [0] more accessible or beginner
         | friendly than the Noma book.
         | 
         | [0]: https://search.worldcat.org/title/1108679733
        
       | stainablesteel wrote:
       | the fermentation idea sounds interesting, and i can buy it to
       | some degree, there's never one magic switch when it comes to
       | evolution, there's always multitudes.
       | 
       | > The problem with this theory is that the earliest evidence
       | places the use of fire at approximately 1.5 million years ago --
       | significantly later than the development of the hominid brain.
       | 
       | but this, isn't really a problem. evidence != truth, its always
       | pushed back upon new findings, and its sensible to assume we will
       | never know the true date, but we will definitely know it was
       | earlier than our best evidence.
       | 
       | nonetheless, that million year difference is a whammy. that's a
       | lot of time for divergence and development of just a single
       | organ.
        
       | languagehacker wrote:
       | Fermented foods have probiotic benefits, and your gut is often
       | called the second brain, so why the heck not
        
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