Sulforaphane increases brain glutathione: relevance in autism, TBI, brain aging | Rhonda Patrick
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Broccoli sprouts are concentrated sources of sulforaphane, a type of isothiocyanate. Damaging broccoli sprouts – when chewing, chopping, or freezing – triggers an enzymatic reaction in the tiny plants that produces sulforaphane.
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Oxidative stress plays a critical role in aging, traumatic brain injury, and autism. Recent clinical evidence suggests that sulforaphane raises levels of the potent antioxidant glutathione in the plasma and brain. In two independent studies, sulforaphane showed promising outcomes, with children and adolescents exhibiting marked reductions in autistic behavior. In this clip, Dr. Rhonda Patrick describes advances in sulforaphane research that are particularly relevant to the brain.
So what does this do for people? Like people have heard us talk about sulforaphane for a few minutes now, but like what are the benefits? There's tons and tons of studies that have been published showing that taking either, you know, broccoli sprout extract or broccoli sprout powder or even sulforaphane increases levels of glutathione in plasma and also in the brain. In fact, the first clinical study to show that in the brain was published last year in 2018. In human brains? Yes, in humans. This is a clinical study in humans. How did they even get at that? They did some sort of magnetic resonance spectroscopy thing. Crazy. Yeah. But it was so exciting because the amount that they were taking was actually would be equivalent to 2 Prostafanes because it was about almost 18 milligrams a day.
They were taking that for a week and that increased their plasma glutathione and brain. And for people who don't know what glutathione is, it's like the major, major antioxidant. Uh-huh. Endogenous system and particularly in the brain. I mean, it's been shown to have a huge relevance for all sorts of brain aging, traumatic brain injury, other neurological disorders, and including autism. So, oxidative stress, which, you know, plays a role in brain aging and traumatic brain injury, it also has been shown to play a role in autism. Very interesting, there's been 2 clinical studies, one in children and one in adolescents. where the children were given on average like around 12.4 milligrams of sulforaphane a day. Was this done with Avocall or— This was Avocall, yeah.
And the child— this is for children that were between 100 to 200 pounds, so that would be like 4 Avocalls or something like that. And it improved a variety of autistic behaviors in both, you know, the children and adolescents, and these are 2 separate studies that I'm referring to. So it's clearly not only increasing glutathione in the brain, but it's having an effect on behavior, which is really exciting. And, it's thought that is probably linked to this glutathione because again, I mentioned there's been some evidence that autism is multifactorial. Many, many different things have been shown to play a cause in it and not just one thing. So, of the myriad of things shown to play a role in autism, oxidative stress is one of them.
Combating that with glutathione is one of the major ways to improve that. And there's been tons of other interventions trials. For example, eating like 300 grams of Brussels sprouts a day increases glutathione levels also in the plasma and also decreases oxidative DNA damage by like 30%. Wow. So it's like literally decreasing the amount of DNA damage, which is, you know, I should probably mention that there has been like an in vitro study that I've seen where sulforaphane at a very, very high concentration was dumped on cells and it caused DNA damage. It's one of those instances again where it's like Yeah. In vitro studies, when you're dumping things on cells in a petri dish, has very little relevance unless you're looking at the broader literature, right?
You've got to look at what happens at the level of the organism, something that's even physiologically relevant. And so, it's actually doing the opposite. It's not only increasing the antioxidant systems, it's decreasing DNA damage quite significantly by 30%. And this is in humans, okay? This is not animals, certainly not in petri cells in a dish. It's in humans. Very important.
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