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Stuff You Should Know

How Antidepressants Work

Thu, 13 Mar 2025

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The good news is that we know antidepressants can treat major depression, helping millions of people live healthier lives. The bad news is that we don’t really know how they do that. Check out the theories on how antidepressants work in this episode.  See omnystudio.com/listener for privacy information.

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Transcription

Chapter 1: What are the current theories on how antidepressants work?

2115.834 - 2127.183 Josh

It gets out of whack and your blood pressure gets out of whack. And tyramine is present in a lot of different foods from like soy sauce to fish to sausage, aged cheese, the best cheese.

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2128.224 - 2149.12 Josh

And as a matter of fact, it's called the cheese reaction, where people get hypertensive from taking MAOIs and accidentally eating the wrong food. So what the monoamines get broken down by is monoamine oxidase, MAO. And the MAOI is a monoamine oxidase inhibitor.

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2149.46 - 2149.82 Guest

That's right.

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2149.84 - 2158.143 Josh

So it prevents this thing from breaking down the monoamines. And that's why you can't eat aged cheese.

2158.883 - 2163.805 Chuck

Do you think anyone ever goes in and they're like, can I just do the SSRIs because everyone kind of knows those?

2164.165 - 2164.365 Josh

Right.

2166.746 - 2167.726 Chuck

Should we name check those?

2169.603 - 2171.405 Josh

I've never heard of any of them, but sure, if you want.

Chapter 2: How prevalent is depression and what are its symptoms?

2988.706 - 2992.389 Chuck

Yeah. Do you know what the dose was before I give this number?

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2993.69 - 2996.072 Josh

I think it was like melt your face.

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2996.712 - 2997.193 Chuck

Half a bag?

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2998.494 - 3025.522 Chuck

Two handfuls. I'm very curious, but this is, I think it was a depression rating scale they were using where 24 was severe and seven or below was no depression. And before they had the psilocybin, they scored 22, an average of 22.8 out of 24, as far as being severely depressed. And then afterward, it went all the way down to 7.7, which is just a skosh above no depression.

3025.868 - 3029.229 Josh

Yeah, and that 7.7 was that follow-up a year later.

3029.249 - 3030.75 Chuck

Yeah, that's remarkable.

3030.97 - 3059.846 Josh

Yeah, so that was 2022. I wonder if they check in with these people now what the scores will be. You know, do you have to take psilocybin every two years, twice over two weeks, and maintain control over depression? That's pretty amazing. There's another study from 2024 that found that psilocybin is at least as effective at treating MDD as SSRIs, probably more.

3060.424 - 3065.605 Chuck

Yeah. And I think they did try to follow up with those people, but they got no self-service out there in Joshua Tree.

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