In a compelling exploration of medical history and innovation, Radio Lab recounts the accidental discovery of penicillin by Alexander Fleming in 1928, which revolutionized medicine but triggered an enduring battle with antibiotic-resistant bacteria. Despite the development of new drugs, the market for antibiotics declined after 2000 due to the high cost and short profitability—resistance emerges too quickly for companies to invest. The story then pivots to a remarkable modern discovery: researchers at the University of Nottingham tested a 1,100-year-old remedy from the *Bald’s Leech Book*, an Anglo-Saxon medical text, which contains a recipe for treating eye infections using garlic, onion, wine, and ox bile. After a nine-day fermentation, the mixture killed up to 99.999% of *Staphylococcus aureus* bacteria—including dangerous MRSA strains. When tested by a collaborator in Texas, the concoction killed 90% of MRSA bacteria, validating its potency. Though not yet safe or approved for human use, the study reveals that ancient remedies, when reevaluated with modern science, may contain effective antimicrobial compounds. The discovery raises profound questions about historical knowledge, bacterial evolution, and how past treatments might offer new solutions today. The episode concludes with a philosophical reflection: perhaps the past is a “foreign country” where time and knowledge are not linear, and we must learn to understand the language of ancient healers to unlock future medical breakthroughs. While not a ready-made drug, the research has advanced into phase one safety trials and points toward a potential future where ancient wisdom meets modern science. The episode ends with a provocative question: if this remedy works, who owns the patent—Mr. Bald, the historical author, or the modern scientists who revived it?
Hey, it's Lulu. This week I want to bring back an episode about scientists who look in the most unexpected place to find a brand new drug to treat a very tricky bug. The bug is MRSA, that really nasty infection. People sometimes get in hospitals and I don't want to give away the drug because that's sort of all the fun. So I'm going to just pass you off to Chad, Robert, and little baby Latif from about a decade ago. Here we go. Wait, wait, you're listening to Radio Lab from W and Ys. So the way the story goes, it starts in 1928. Alexander Fleming, the story goes, who knows if it's apocryphal or not, is growing staff, Staphylococcus, in his lab. That's Mary McKenna, she's a science writer, and staff is a bacterium. It lives on our skin, and it especially likes parts of the body that are warm and damp. So it likes to be just up our noses or in our genitals or in our armpits, places like that. Generally, it's no big deal, doesn't really do us any harm, but if it gets into a scratch or a cut and makes its way inside our bodies, Staphyl goes from being this benign companion to being potentially deadly. Anyway, London, 1928. Fleming is growing staff in his lab. In these little petri dishes, and he was a slob, basically. And he goes on a vacation, leaves his petri dishes, covered in bacteria just around, leaves his window open, and something blows across his lab plates. Some tiny little speck of a thing just floats in through the window and comes to a rest on one of those petri dishes. And so a few weeks later, Fleming, finally, back from vacation, he needs to use those lab plates again, and he and his assistant go to clean them off. I mean, you'd imagine that he would seed some real, lush, nice, furry lawn of staff just overflowing right out of the plate because it's been sitting there for so long. It's been a staff party. But on one of the plates that they pick up, they realize that it's almost polka dot. It's got little dead zones all over it. Little patches where the staff is dead. Dead patches. So something blew through the window, landed in the dish, and starts killing the bacteria. Yeah, and so when Fleming looks down at his plate, he sees that at the center of these, you know, staff dead zones, there's a tiny speck of natural mold. Oh, mold. And they realize that that mold is expressing a compound that is killing the staff around it. It's like emanating rays of death. What was the compound? The compound was called the first true antibiotic infectious diseases that had been killing people for as long as we had been people suddenly could be stopped, and it just blew in through the window. That is the story that's always been told. However it got there, it was it was amazing. It was a miracle. It was called a miracle drug, right? I mean, it was just it was it really was a moment when the world changed. When Fleming was put on the cover of Time magazine. This is 1944, Hyde of World War II. It was a picture of his face and the banner on the cover said, his penicillin will save more lives than war can spend. But, and this is, I had no idea about this, virtually at the exact same time when Fleming's face is on the cover of Time magazine like two months later, this Stanford researcher publishes that he has found five different strains of staff that do not respond to penicillin. Really? Yeah, this is happening while he's on the cover, virtually the exact same moment. And it's the first sign that staff has responded to the penicillin in the world by developing resistance. Almost like a separatist or so in Wheeler, the era of penicillin was over before it began. Almost before it began. Before it's even released to the general public. Wow. And that penicillin resistance staff moves across the globe. And in 1957 in Cleveland, some scientists gather together and they are in a panic. They have no idea why they've lost the antibiotic miracle so quickly. So scientists across the globe put their brains together and try to come up with a new drug. The next amazing thing. And in 1960 they get a methicillin. And it works. For about 11 months. 11 months. And so we started this arms race. There was a bug and then there was a drug that took care of it and then there was a better bug. Drug bug. Right, exactly. Actually, found this list. Do you want to hear it? Yeah. Okay. 1947, 1943, resistance 1948, methicillin 1960, resistance 1961, clindamycin 1969, resistance 1970. Wow. You can think of it as sweet frog or you can think of it as a game of whack-a-mole. Ampacillin 1961, then 1973, so that's a little carbenicillin, released 1964, resistance 1970. They're getting better. There were always more drugs. You know, the drug development was doing really well for a really long time. Hyperacillin introduced 1980, resistance 1981. But after the year 2000, drug companies begin to realize it's not really in their best interest to make antibiotics any. And the end I have on this list is Linnizolid, which is introduced 2000, resistance 2002. Wow. And there are a few more, but you get the idea. Antibiotic proofs, the entry of new drugs to the market just kind of fell off a cliff. Why? Well, it takes 10 years and a billion dollars to get to the point where the drug is marketable. But as soon as you get the drug on the market, the resistance clock is running. So you probably won't make your money back. And as you've probably heard, we now have these situations, where literally nothing works. So called super bugs are now turning up in hospitals and the patient dies. There are now bugs that can resist all of our drugs. I have seen physicians break down weeping over this. It's not the way that medicine is supposed to fail anymore, but it does. I mean, I know that possibly the origin story of penicillin is powerful. So this is all a little suspect, but you know, just to enjoy imaginings for a moment, like it just seems like if that happened, let's just open up a bunch more windows, something not a blow-in. But we could wait a long time, right? I mean, we had staff had been around for millennia before 1928. But you know, the whole reason that I wanted to do this story is because kind of there is a new window. It's a different kind of window though, not a window next to some petri dishes, not a window next to some petri dishes, kind of a window next to some petri dishes, but a totally different kind of window. What kind of window is it? Well, I'm about to tell you that. Is something blowing to the window? Yeah, but it's not mold. It's way more fun than mold. It carries an axe. How about that? So it's a person, maybe. I don't know what I'm referring to anymore. Part two? Yeah. Okay. Hey, I'm Jed, I'm Rod. I'm Robert Crowich. This is Radio Lab. We're ready now for part two. Now, remember when part one ended? There was a window open and something was going to come through. We don't know what. We know it's not mold. Yeah, we know it's not mold, so whatever it is, whatever it was, whatever it will be, we will hear about it now from our reporter, a lot of NASA. Well, actually, there is this story about these two women who did open a window to an alien and distant land, and actually, in a way, it's a story about reimagining the past. But to me, it's a story about a friendship. Hey, everybody. Hello again. Hello again. It's a buddy film. It's a buddy movie. Yeah, it's a buddy movie. Okay. So, yeah, maybe just walk us through it. Right. So, okay. So, you have. Hello, I'm Dr. Christina Ali. Christina. And I'm an associate professor in Viking studies at the School of English at the University of Nottingham. She's a historian. And then you also have. Hi. I'm Freya Harrison. Freya. I'm a research fellow in the Center for Biomolecular Sciences at the University of Nottingham. Freya is a microbiologist, she studies bacteria. We'll start with her. Okay. So, most of my work is about sort of looking at how bacteria evolve during very, very long lived infections. But. Hi! My big hobby is Anglo-Saxon of Viking reenactment. Oh! So, I have purely amateur interest in the history and mainly in dressing up as a warrior and going to Fight Club every Wednesday night and learning to use the weapons. Yeah. So, this is actually not Freya's group. This is a group in New Jersey, but basically they do the same thing. Hundreds of people go out into, you know, some field with some dulled weapons. Everything from swords, spears, axes, and we give each other a jolly good
And have a good time! I only mentioned this because it actually plays into the story. Well, it was, it was a really nice sort of coincidence really. 2012, a few years after finishing her doctorate, Freya goes off to work at the University of Nottingham. Nottingham's one of the places in the UK, not only for microbiology, but for Anglo-Saxon and Viking history. And she goes there to study microbes, but she figures, hey, why not while I'm here, brush up on my old English? With her, it's, well, here, it's, I'm a Buddhism. I'd studied some old English to a level where I could sort of read and speak a little bit. That's stand-on nichnichter. But she figured, hey, she could, she could be better. And if she did, she would get deeper into the whole reenactment thing. So, I rather cheekily emailed the School of English's old English reading group. That's where she met Christina, the historian. And I thought, one point, Christina, the historian asks, Freya, like, what do you do? And Freya said, you know, my day job is that I'm a microbiologist, but on evenings and weekends, I'm a history nerd. And Christina said the moment she heard that. I just kind of thought, I found my kindred spirit here. Because she was like, wow, I'm like your mirror image. Because I'm a historian by day, but by night, I'm a microbiology nerd. I've been interested in infectious disease for quite a long time, which I don't find any kind of friends in my department. She told me she's the kind of person who would, you know, watch Ebola coverage on the news and not be able to stop watching. So, eventually, they start talking about historical diseases. So, like, how would people back then have treated something like, you know, Ebola? Freya is especially interested in this because she, for her historical reenactment, is developing this none character who goes off and heals people. But anyway, so they're talking back and forth and then to cut a long story short, they find themselves both interested in this one particular book. It's known as Bald's Leach Book. So, this is about 1100 years old. What's it called? Bald's What? Bald's Leach Book. It's nothing to do with no hair. Oh, even though it's a speth. Bald, is it B-A-L-D? It is indeed. And leech, like a leech, like a leech, like a little worm that grabs onto your blood? No, no, it comes from the Old English word "letcher", which is actually a healer or a doctor. So, the little squiggly animals are called leeches because they're medicinal, not the other way around. So, the doctor wasn't named for the leech. The leech was named for the doctor. It's actually, yeah. And Bald is a man, the guy wrote a book. We think it's a guy, we think it's a guy's name. And what is this book? So, it's kind of like this old healer's handbook. It's filled with these potions and cures. The original manuscript is in the British Library. Locked away. But, 21st century, very kind people have digitized the original Old English text and put it online. So, Christina and Freya bring it up, and they start going through all the remedies. And, you know, it describes to you remedies for stuff that is a little bit different, you know, things like. Von a devil. Von a man on a. Possession by the devil. Which, according to this leech book, the remedy for someone who is possessed by the devil is you spew a drink and luthre. Make this kind of, like, foul brew. You make them drink it, and it'll make them vomit out the devil. And then there's another remedy for warts. Bixéop, weird, ik nua to somne. And all I'm going to say about that one is that it involves hounds urine and mouse blood. And then things like. How should we say make your husband more physically attentive or less physically attentive, whichever you wish have a direction you need to moderate it? Pigs blood, I hope. Or toad blood. Drink on neyacht nest, yeah. Actually, it's just you boil a plant in some water and give it to the guy. Oh, yeah. Anyway. So, Freya and Christina are going through this leech book. Looking for some kind of wound. Something that was clearly in infection. Some pussy, uh, something. We could clearly say that's that's bacterial. And eventually they find an entry. Where at the end of the recipe, it says in old English, say, best de la Tadon. So, best de la Tadon. The best medicine. The best medicine. Hmm. Yeah, move over laughter. Yeah, and we thought, how can we not try this one? What was the best medicine for? So, it said it was for a lump in the eye. It's actually called "when" in old English. These days, if you get it, of course, that could be something like a wart, right? But there is a suggestion by archaeologists that eye infection was rife amongst the Anglo-Saxons. Really? Because you lived in buildings where you had smoke going on. You lived cramped together. So, it could also be a stye. What is a stye? It's an infection of an eyelash follicle. You rub it and it itches and then it gets swollen. Of course, it's quite a nasty red lump. The stye in your eye. Stye in your eye. Now, it just so happens that the bacteria that causes the stye in your eye is. Staphylococcusaurius. Oh, the same stuff is the Mr. Windowman, penicillin man. Exactly. And we just thought, wouldn't it be nice to have a bit of spare time and a couple hundred quid to buy the ingredients and just give this a go? Yes! Let's give it a try, you know? Why the hell not? And matter of fact. Look at this place! We thought that too. Studio. Not bad. Recently, producer Matt Killty and I went to my tiny apartment in the city and we tried to cook it up too. Are you ready to cook? Oh, I'm ready to cook. I've got this recipe here. Oh, awesome. Yeah, yeah, please read it. Go for it. Okay, it goes like this. Weird. I see all of us with one year name, Crop Lea. That's the first line of the recipe and right off the bat for Christina and Freya, there's a problem. That first ingredient. The word Crop Leaach. Crop Leaach. Crop Lea. Christina said it was quite difficult to translate. Nobody quite knows and on what it is. But luckily. Just a couple words over was a clip. And Garlia. It made a second ingredient. Garlic. Which is an allium species and Crop Leaach. We know this was another allium. That's what the dictionary of Old English tells us. So they figured probably what they were dealing with was an onion or a leak? But we didn't know which one. So we thought, okay, we'll try one that has onion and one that has a leak. Yeah, yeah, yeah, I'm fair lah. Now, the recipe doesn't cover this, but we did it anyway. Peel the onion, chop it up. This thing for the garlic. And the recipe doesn't tell you how much. It doesn't tell you equal amounts of. So you take out the measuring cups, you measure out equal amounts. Yeah, equal amounts. And there's a pestle. And then after that, okay, it says. Hounded well together. Okay. To be really pounded. And pounded, fray I did. Yeah, yeah. So lots of time with the mortar and pestle. Muscles built up from wielding a sword if they're pounding the ingredients. Looks, it's starting to be more of a musk. Third ingredient. The next one was definitely something you wouldn't have knocking around in your kitchen. End of fair, yes. Yeah, I'm fair lah. Oxgull. Oxgull. Bovine bile from a cow's gall bladder. What do you give to kill the cow and then go with you? So it's actually a very standard ingredient in microbiology labs. Ox bile. Today in 2015, you can but should not just buy it on the internet. Here we go, here we go. And so you take the ox bile, add it to the onion and garlic. And then the fourth ingredient. Yenima wien. Wine. And wine time. Red wine, white wine. Like what kind of wine are we talking about here? This is the thing. So we had quite a discussion about what type of wine should we use. And we don't know really did they have red wine? Did they have white wine? What was the alcohol content? But I did a bit of detective work. And she figured out that the monastery where this leech book was written. Well, they she figured out where their vineyard was. And just down the road, this is modern organic vineyard. So they used that wine. Cabochoni. Cabochoni and piglie. I just want to point out how difficult it is to find English wine. We had to use Italian. But in Ming, we've had to do some on Arfat. Once you get all that stuff together, you're under the final ingredient. The fifth ingredient was actually that you're specifically told that you have to mix these ingredients together in a brass or a bronze pot. I don't have one. So we had to sort of add pieces of a copper that would have been available to people at the time. So they had to do some research. But they figured out that the copper of today, that is most like the copper of a millennium ago, was actually cartridge brass, which is what's used as standard in plumbing fittings. Got a few pennies in there. We actually use pennies. Do I stir it? I think I stir it. It's like a world's worth cooking show. And it looks and smells like quite an ice, quite an ice summer soup. That's awful. Oh, that's so gross. Clearly, we botched this whole thing. And finally, so we're going to cover it. Okay, we're covering it. The directions say we have to let the whole thing sit for a while. There has to be stored for nine days and nights. Okay, that's it. One day goes my two days three, four, five, six, seven, eight, nine. All right, nine days later. All right, here we go. You ready? And then you have to strain it through a cloth. The liquid that comes off, you apply to the person's eye. Or the liquid. Yeah, with the feather. Say, "Bets the Latchador." Now, clearly, we didn't have any staff to try this out on, but Freya in her lab, she made these mark wounds. With these little plugs of collagen. So it's a bit like jelly. Basically, it's like a like a goopy substance made to be
it's kind of like a flesh wound. - And we infect these wounds with bacteria with the staff. - Then they put this thousand-year-old recipe that had been standing there for nine days. They put it on the bacteria that was in the fake wound. - We didn't think this was going to work, no. We thought, you know, well given the ingredients, we might see some small killing effect on the bacteria, but it wouldn't be anything to write home about. - They thought maybe it'd kill 10%, 20% of the bacteria. But then when they came back the next day, (dramatic music) - It was a staff massacre. It went on a rampage. It went on a staff rampage. - It was killing, you know, 99.999% of these bacterial cells. Yeah, first we thought we'd made some sort of mistake and this was some kind of fluke. You know, we'd accidentally mixed up our plates or mislabeled something. - So, they run the entire experiment again. They're grabbing ingredients, mash them up, put them on some bacteria, and it happens again. - Just absolutely wiped out the bacteria. Tell them dead. - Then they tried a third time and a fourth and a fifth, and it works every time. - And this is just something you really don't see in your career's microbiologist. - And eventually they escalated from just regular staff to the Mersa, to the methicillin resistant staff. And this is one of the bad ones. - A super bug. New government data estimate that about 2,000 people are dying of community-based MERSA every year. - This one is very dangerous. - So, Christina and Freya, they sent some of Bald's brew to one of their collaborators in the States. - A collaborator Kendra Rumbau in Lubbock in Texas. - Kendra took this stuff, put it on some MERSA bacteria, and then a week later sent Freya and Christina an email. - And I think it was actually a three-word response. I think she just simply said, - What the fuck? - What the fuck? - Bald's best medicine had just ripped havoc on the MERSA. It killed 90% of them. - This is beyond our wildest dreams. - Now, Freya and Christina made very clear that this is not yet a miracle drug. I mean, it's not even being tested in humans. - So, absolutely do not do this at home. - They don't even know if this is safe. - It might be that if you don't do it in exactly the way we did, nasty fungus could grow in it, give you a worse infection. - So, we should not have done this. - Matt and I, we. Dumb tires down the drain. But the thing about this whole story that is so intriguing and so cool to me is this time travel thing, which is so strange. Like, it's like the idea that something 1,000 years ago, like a bullet forged 1,000 years ago, we could use it now and then it could work. That, that, the time travel dimension of that is so weird to me. - It kind of makes you think differently about, I don't know, progress. - So, without much further ado, Dr. Christina Lee and Dr. Freya Harrison, and they're going to talk to us about some ancient biotics. For example, just a few weeks ago, Freya and Christina got up in front of the Royal Society of Chemist. - Thank you very much and it is an absolute pleasure to be here. - Large hotel conference room, 100 or so people. Freya actually got up on stage just as a nun. - Okay, so this is one interpretation of what an Anglo-Saxon scientist may have looked like. - And they presented the results. - Next ingredient is particularly the cooking demo and then at some point, Christina said something really interesting. She was like, okay, sure, we want to write this off because it has demons and dragons and elves in it. But are we sure that we know what they meant by those words? Like, for example. - There are remedies which ask you sing for avomerias. - And we would say, oh, that's so superstitious, this is all in their heads. - But there again, we should also remember, this is a period when people do not have watches. You do not have your nose, you know, so that's got to watch. Everybody knows the avomeria. Everybody knows the length of an avomeria. - So maybe it's, maybe it's take this medicine and wait 20 minutes and I know how to standardize 20 minutes, which is-- - Three avomerias, four avomerias. May actually be like-- - So, it may appear one way and it's, in fact, could be a totally different way. - It suggests that in order to time travel, you have to somehow, God, it's like we don't even have the language to be able to understand what they were doing. - There's a phrase, the past is a foreign country. - Likewise, we need to learn the language of the doctors of that time. We need to kind of be a little bit less dismissive and learn a little bit more, you know, from them. I learned a bit of humility this way. - But here is the reason why this is so confusing to me. So 1100 years is a crazy long time for humans and for bacteria, that's like a exponentially crazy long time. - Yeah. - So how is it that something that this man bald was doing to these bacteria then? Like it's not even the same bacteria. - Yeah, how could that even work? - That's an awesome question. So one thing we've got to think about is, well, why did these medicines drop out of use? And maybe it's because when they were used, the bacteria evolved resistance. But now, a thousand years later, when these medicines have not been used, you would expect that resistance to be lost. - This is something that Mary and McKenna mentioned to Soren and I, that sometimes when you take a drug out of circulation, - Sometimes resistance will decline. That doesn't always work, but sometimes resistance does decline. So if we had been using this compound through the ensuing thousand years, then maybe it wouldn't work. - So there's an interesting discovery there, like that what worked once and then was resisted, you'd give it a rest and I can work again. And it will be resisted and you put it to rest. And if you had enough different, you could go to different places in the different path to go to China where they now got all these people studying Chinese cures and Arab cures. You could come up with a rich historical cocktail of armamentariums that will work. If you bring them in, take them out. Bring them in, take them out. And the whole world, the whole world of the past then becomes the fruit of your future sort of. - So it's also like now I have a suddenly an image that is possible that this is Soren Wheeler, by the way, in conversation with Mary and McKenna Latif. - That a thousand years ago, these folks went through what we went through with penicillin and that this guy wrote something in the book and it's actually called the best medicine. He probably got on the cover of whatever their version of time was. - He got their Nobel Prize. - Then everybody celebrated and then years later, the styles were coming back in the garlic wine didn't work anymore and they stopped using it and it got put away. And then here we are and we discover it and it's been put away long enough that, like now I'm thinking about future, some future civilization digs up an old medical textbook that was in some dusty, whatever, and discovers penicillin. And it works. Did I lose you on that, Mary? - No, no, I'm still with you. I'm just, I don't know. It just seems like such a great hypothetical construction. I just didn't really know what I can add to it. - Sorry, I had to go for it. - Hey, Lulu, again, with a quick update. It has been almost a decade since we first aired this episode and since then, Christina and Freya have published several papers to show how this concoction works and why. Now, Bald's I-Self is not quite ready to hit the drug store shelves yet, but in 2022, it made it over a big hurdle for new drugs. Phase one safety trials. It was tested on healthy humans, so not already sick folks and not in open wounds and the results were overall successful. And Freya and her colleagues have a pretty good idea now of which chemicals in the medicine are the important ones so they can distill it down to its bacteria, fighting essence, potentially great news for all of us staying a little healthier, using very old things. But all this, you know, did leave me with one very important question for Christina, the Viking expert. If we get further in clinical trials, and this actually becomes, you know, a drug, who owns the patent? Is it Mr. Bald or whoever from like a thousand years ago? So we asked Christina, the Viking expert. I don't know. I know, you know, I really don't know, but, you know, technically, Mr. Bald is having this manuscript written for him. It's in his possession, but that doesn't mean it's his work. So it becomes a really interesting question, you know, the most of who owns the IP on this. Anyway, Radio Lab here for you, the hard-hitting medical questions, the hard-hitting patent questions. Thanks so much for listening. We'll be back next week. Special thanks to Sarah to Steve Diggle. And to Alexandra Ryder and Justin Park, who came down from Yale to be our old English readers. To Jean Murrow from the Gotham Early Music scene. medieval harp, Kalman row of Tadcaster, and on the rest of the Baronyev iron box. Not totally sure what that is, but I know they helped us out. And I guess we should help ourselves out. Yes, very quickly, through the window. I'm Jada Mourad, I'm Robert Coolwich. Thanks for listening. Hi, I'm Gabby. I'm from the Bay Area, California. And here are the staff credits. Radiolab is hosted by Lulu Miller and Lentif Nasser. Sauron Wheeler is our executive editor. Sarah Sandbach is our executive director. Our managing editor is Pat Walters. Dylan Keef is our director of sound design. Our staff includes Jeremy Bloom, W Harry Fortuna, David Gabel, Maria Paz Gutierrez, Sindu Nain Assambandan, Matt Kielte, Mona Magauker, Annie McEwan, Alex Neeson, Sarah Cari, Natalia Ramirez, Rebecca Rand, Anise Vita, Arian Wack, Molly Webster, and Jessica Young, with help from Gabby Santis. Our fact checkers are Diane Kelly, Emily Krueger, Natalie Middleton, Angelie Mercado, and Sophie Semey. Leadership support for Radiolab's science programming is provided by the Simon's Foundation and the John Templeton Foundation. Fundational support for Radiolab was provided by the Alfred P. Sloan Foundation.
Podcast Summary
Key Points:
In 1928, Alexander Fleming discovered penicillin accidentally when mold killed bacteria on a petri dish left open during his vacation, marking a turning point in medicine.
Despite its initial success, bacterial resistance to penicillin emerged almost immediately, leading to a decades-long arms race between antibiotics and resistant pathogens like MRSA.
In a surprising modern discovery, researchers Dr. Christina Ali and Dr. Freya Harrison tested a 1,100-year-old remedy from the *Bald’s Leech Book* and found it effectively kills *Staphylococcus aureus*, including drug-resistant MRSA, suggesting ancient treatments may still hold medical value.
Summary:
In a compelling exploration of medical history and innovation, Radio Lab recounts the accidental discovery of penicillin by Alexander Fleming in 1928, which revolutionized medicine but triggered an enduring battle with antibiotic-resistant bacteria. Despite the development of new drugs, the market for antibiotics declined after 2000 due to the high cost and short profitability—resistance emerges too quickly for companies to invest. The story then pivots to a remarkable modern discovery: researchers at the University of Nottingham tested a 1,100-year-old remedy from the *Bald’s Leech Book*, an Anglo-Saxon medical text, which contains a recipe for treating eye infections using garlic, onion, wine, and ox bile.
999% of *Staphylococcus aureus* bacteria—including dangerous MRSA strains. When tested by a collaborator in Texas, the concoction killed 90% of MRSA bacteria, validating its potency. Though not yet safe or approved for human use, the study reveals that ancient remedies, when reevaluated with modern science, may contain effective antimicrobial compounds.
The discovery raises profound questions about historical knowledge, bacterial evolution, and how past treatments might offer new solutions today. The episode concludes with a philosophical reflection: perhaps the past is a “foreign country” where time and knowledge are not linear, and we must learn to understand the language of ancient healers to unlock future medical breakthroughs. While not a ready-made drug, the research has advanced into phase one safety trials and points toward a potential future where ancient wisdom meets modern science.
The episode ends with a provocative question: if this remedy works, who owns the patent—Mr. Bald, the historical author, or the modern scientists who revived it?
FAQs
The story goes that in 1928, Alexander Fleming noticed that a mold had killed bacteria on a petri dish left open during his vacation, leading to the discovery of penicillin, the first true antibiotic.
Resistance to penicillin emerged almost immediately, with scientists finding resistant strains by 1948, showing that bacteria can evolve to survive antibiotics even before they are widely used.
The Bald's Leach Book is an 1100-year-old manuscript containing ancient remedies, including one for a stye in the eye, which contains Staphylococcus aureus—the same bacteria that causes MRSA.
Yes, when tested in the lab, the recipe—made from garlic, onion, ox bile, wine, and a brass pot—killed 99.999% of Staphylococcus aureus and even MRSA bacteria, showing strong antibacterial properties.
Yes, the recipe underwent a phase one safety trial in 2022 on healthy human volunteers and showed positive results, though it is not yet approved for medical use.
The recipe is not yet available as a commercial drug, but researchers have identified the key active ingredients and are working to distill and refine it into a safe, effective treatment.
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