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Gut microbial taxa elevated by dietary sugar disrupt memory function

nature.com

1–10 of 28 posts

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#2
Abstract:

Emerging evidence highlights a critical relationship between gut microbiota and neurocognitive development. Excessive consumption of sugar and other unhealthy dietary factors during early life developmental periods yields changes in the gut microbiome as well as neurocognitive impairments. However, it is unclear whether these two outcomes are functionally connected. Here we explore whether excessive early life consumption of added sugars negatively impacts memory function via the gut microbiome. Rats were given free access to a sugar-sweetened beverage (SSB) during the adolescent stage of development. Memory function and anxiety-like behavior were assessed during adulthood and gut bacterial and brain transcriptome analyses were conducted. Taxa-specific microbial enrichment experiments examined the functional relationship between sugar-induced microbiome changes and neurocognitive and brain transcriptome outcomes. Chronic early life sugar consumption impaired adult hippocampal-dependent memory function without affecting body weight or anxiety-like behavior. Adolescent SSB consumption during adolescence also altered the gut microbiome, including elevated abundance of two species in the genus Parabacteroides (P. distasonis and P. johnsonii) that were negatively correlated with hippocampal function. Transferred enrichment of these specific bacterial taxa in adolescent rats impaired hippocampal-dependent memory during adulthood. Hippocampus transcriptome analyses revealed that early life sugar consumption altered gene expression in intracellular kinase and synaptic neurotransmitter signaling pathways, whereas Parabacteroides microbial enrichment altered gene expression in pathways associated with metabolic function, neurodegenerative disease, and dopaminergic signaling. Collectively these results identify a role for microbiota “dysbiosis” in mediating the detrimental effects of early life unhealthy dietary factors on hippocampal-dependent memory function.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#3
I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based.

It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) because it would make me 'hangry' only to realize that a lot of that was just the crashes from a poor sugary American diet.

Now, its my to go thing to do when I'm feeling ill or lethargic as it perks me up and after nearly a diet of daily intermittent fasting (10-18 hours) I now understand why so many ancient cultures have it as a critical part of their religious practices.

Also, it makes food taste really good as you will savour every bite instead of just stuff your face.

Anyhow, it's insane to me that it took this far into the 21st century for modern medicine to see the obvious when it comes to emphasis of the gut biome in the overall health of the body and mind. The next thing will be the emphasis on healthy animal meat and fats in satiation and lower inflammation, as well as the absurdity of drinking other animals milk with all the antibodies, steroids, antibiotics etc... used in conventional Ag.

Raw milk is ok, but honestly I wonder what the amount of leaky gut and IB, and possibly Crohn's disease this single thing into our diet has caused? It's worth noting that most of the Human population loses the ability to metabolize milk (via na enzyme called lactase) by the time they reach 12, very few populations still have it: think Nordics. Even Mongolians who have been milking animals for 1000s of years still lack this gene/enzyme which.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#5

I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based. It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) b…

Sometime in the last 20 years we simply stopped talking about fiber, and both kinds play a big role in gut biota. It's like we've simply given up on it.

Probably most of us aren't getting anywhere near as much pectin in our diets as we used to, let alone vegetables.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#6

Abstract: Emerging evidence highlights a critical relationship between gut microbiota and neurocognitive development. Excessive consumption of sugar and other unhealthy dietary factors during early life developmental periods yields changes in the gut microbiome as well as neurocognitive impairments. However, it is unclear whether these two outcomes are functionally connected. Here we explore whether excessive early l…

Why was this flagged? It's simply the abstract for the article, useful for people to read (to determine if they're actually interested in reading more) before clicking through.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#7
post #5

I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based. It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) b…

Sometime in the last 20 years we simply stopped talking about fiber, and both kinds play a big role in gut biota. It's like we've simply given up on it. Probably most of us aren't getting anywhere near as much pectin in our diets as we used to, let alone vegetables.

wait I thought fiber vanished in the 1950s due to nutritionist of the day going all in on the 'calory is all that matters' but a lot of people started to talk about fibers in the 2000s (my memory is blurry though)

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#8
post #5

I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based. It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) b…

Sometime in the last 20 years we simply stopped talking about fiber, and both kinds play a big role in gut biota. It's like we've simply given up on it. Probably most of us aren't getting anywhere near as much pectin in our diets as we used to, let alone vegetables.

Fiber slows the absorption of sugar so that it gives you longer lasting energy instead of spiking your blood sugar all at once.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#9
post #5

I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based. It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) b…

Sometime in the last 20 years we simply stopped talking about fiber, and both kinds play a big role in gut biota. It's like we've simply given up on it. Probably most of us aren't getting anywhere near as much pectin in our diets as we used to, let alone vegetables.

The funny thing is that the anti-sugar keto people are also even more anti-fiber. They'll tell you that you just need to eat steak and fats and nothing else and fiber is part of the "healthy whole grains" lie. I'm not sure if any of them are into gut microbiome science yet.

Re: Gut microbial taxa elevated by dietary sugar disrupt memory function

#10

I believe it, inflammatory responses causes so many things we are only now starting to see in the past 15 years, lots of autoimmune diseases that had no cause or correlation to anything seem to be a direct byproduct of a modern Western diet--sugar based. It's crazy but I used to mock the idea of fasting from a biological perspective (an education emphasis on glucose and misc metabolic pathways to create ATP etc...) b…

> Anyhow, it's insane to me that it took this far into the 21st century for modern medicine to see the obvious when it comes to emphasis of the gut biome in the overall health of the body and mind.

It does make me wonder if anyone in agriculture/food/health/etc has known about this stuff in private, and for how long if so, like how Exxon did private climate-change studies in the 1970s: https://corporate.exxonmobil.com/-/media/Global/Files/climat...

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