HoldsUp

Mark Hyman, MD · 2025-06-04 · Mark Hyman (host), Jeff Bland

Eat This to Regulate Your Immune System and Fight Inflammation

45 research-tied claims examined: 9 contradicted 4 overstated 4 context 20 supported 8 unverified

4

Needs context

0:01:31Jeff Blandneeds contextmoderate

50,000 new synthetic chemicals of unknown toxicology have been introduced into the environment.

"50,000 new chemicals of unknown toxicology introduced in the environment." (said at 0:01:31)

The figure of ~50,000 (often cited as between 40,000 and 85,000) reflects widely cited estimates of industrial and synthetic chemicals that entered commercial use and the wider environment over the last several decades with little or no comprehensive toxicological data. Under regulatory regimes such as the 1976 US Toxic Substances Control Act (TSCA), tens of thousands of existing chemicals were grandfathered in or entered commerce without mandatory pre-market safety or toxicity testing. However, 50,000 is a rough benchmark estimate rather than an exact census of completely uncharacterized chemicals in environmental circulation.

0:45:15Jeff Blandneeds contextlow

Albert Szent-Györgyi found that ultra-pure crystalline vitamin C only partially cured scurvy in guinea pigs until impure paprika extract containing flavonoids (vitamin P) was administered.

"However—and this is a point that most people don't know—that if he used the ultra-pure vitamin C, he only got the guinea pigs almost well, but they weren't totally well. The only way they could get totally well was to give them the impure vitamin C that had kind of a orange color to it, like it it had impurities from paprika. It wasn't purely crystalline white. And then they got well. What do you think that stuff was coloring the vitamin C? It was flavonoids. He called it vitamin P for permeability because it prevented capillary permeability." (said at 0:45:15)

Albert Szent-Györgyi did isolate flavonoids (initially called "citrin" or "vitamin P") from Hungarian red pepper (paprika) and lemon peel alongside Rusznyák, observing that crude extracts containing flavonoids decreased capillary permeability and vascular fragility (hence "P" for permeability). However, historical and biomedical evidence shows that pure vitamin C (ascorbic acid) fully prevents and cures the classic deficiency state of scurvy in guinea pigs and humans without requiring flavonoids. While flavonoids modify capillary fragility and synergize with ascorbate in vascular function, vitamin P was later determined not to be an essential vitamin or required to cure scurvy. No published evidence supports the assertion that pure crystalline vitamin C fails to cure scurvy in guinea pigs without flavonoid addition.

0:58:50Mark Hyman (host)needs contextvery low

The polyphenols and fiber in Himalayan tartary buckwheat modulate the microbiome in ways that assist blood sugar control.

"and it has effects on the microbiome in ways that help blood sugar control. So there's so much going on there, not just the fiber in it, but also the polyphenols, which now are needed for gut microbiome health." (said at 0:58:50)

Preclinical rodent studies demonstrate that both dietary fiber and polyphenol (flavonoid) extracts from Tartary buckwheat (Fagopyrum tataricum) modulate gut microbial composition (e.g., increasing short-chain fatty acid producers, altering the Firmicutes-to-Bacteroidetes ratio, and enriching taxa like Akkermansia) and concurrently improve glycemic parameters and insulin sensitivity. However, this specific microbiome-mediated mechanism for blood glucose control is supported primarily by animal models (such as db/db or streptozotocin-induced diabetic mice), and robust direct clinical trial evidence in humans establishing that Tartary buckwheat polyphenols regulate blood sugar specifically through microbiome modulation is lacking.

1:01:39Jeff Blandneeds contextlow

Sprouting Himalayan tartary buckwheat seed produces a three-fold increase in overall immune-active phytochemicals.

"when we did a compositional analysis of the phytochemicals in the sprout, as you had alluded to earlier, we had a three-fold increase of the overall immune-active phytochemicals." (said at 1:01:39)

Sprouting (germination) of Tartary buckwheat (Fagopyrum tataricum) has been shown in compositional analyses to significantly increase concentrations of total phenolics, flavonoids, and free-radical scavenging capacity compared to ungerminated seeds. However, the magnitude of the increase varies depending on the specific phytochemical, germination duration, and processing conditions. Furthermore, describing these compounds broadly as 'immune-active phytochemicals' reflects preliminary in vitro and functional characterization of plant polyphenols (such as rutin and quercetin), rather than direct human clinical immunological outcomes.

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.