Andrew Huberman· PhD
we do have like in that particular case we have randomized control trials looking at okay cruciferous vegetable intake and thyroid function and there's no difference in the outcome
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
we do have like in that particular case we have randomized control trials looking at okay cruciferous vegetable intake and thyroid function and there's no difference in the outcome
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shows that some of those foods have another isothiocyanate called göran which can be a big deal
and you're also if you pull out the toxic brassica vegetables or the whole podcast we did previously was titled how broccoli is destroying your thyroid and of course there's a little bit of hyperbole there but the point is there are things that are inhibiting the absorption of iodine
and the leaves and i've heard you talk about goitrogens and overconsumption of brassica vegetables
there are many isothiocyanates that may have the potential to be negative in humans at the level of iodine absorption and the thyroid among other possible detrimental mechanisms
many isothiocyanates that may have the potential to be negative in humans at the level of iodine absorption and the thyroid among other possible detrimental mechanisms
broccoli spears ll isothiocyanate glycosinolates goitrin nitrates
radishes glucosinolates which many of you may know will inhibit absorption of iodine and incorporation into the thyroid
so a lot of times when people have thyroid issues they will go to some functional medicine doctor who says whoa lay off the broccoli but kale and broccoli are the they're the top of the pantheon of freaking nutritional gods right
The isothiocyanates in kale can affect iodine uptake at the level of the thyroid.
things like isothiocyanates in kale which harm your thyroid
the most goitrogenic substance in these Foods appears to be a compound called goitrin
it contains compounds the family from isothiocyanates that will inhibit the absorption of iodine at the level of the thyroid
things like brussels sprouts chard Etc these have been shown to contain meaningful amounts of isothiocyanates that can significantly impair thyroid function in the amounts we consume them in the human diet
things like brussels sprouts chard Etc these have been shown to contain meaningful amounts of isothiocyanates that can significantly impair thyroid function in the amounts we consume them in the human diet
these plants contain compounds that can inhibit the absorption of iodine at the level of the thyroid
the Brasa family of plants or the mustard family of plants do contain compounds that are known to inhibit the absorption of iodine at the level of the thyroid and they are connected with thyroid problems especially in areas of the world where humans don't get enough iodine in their diet
the authors of this study do note that broccoli and other types of kale contain less of these and so they're probably less harmful for humans but they still contain these compounds
because these vegetables block the absorption of iodine and the thyroid gland hypertrophies or grows this is consistently known and demonstrated across these populations but if you're getting enough iodine in your diet you may be able to override these effects of things like cassava Yuka brussels sprouts collared greens Russian kale
if you're not getting enough iodine in your diet the isothiocyanates which are iodine blocking at the level of the thyroid in this kale could potentially lead to thyroid problems
Many plant foods do contain grogenic substances and these essentially block iodine uptake.