The hottest Microbiology Substack posts right now

And their main takeaways
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Top Health & Wellness Topics

Culture Shift

Asimov Press • 412 implied HN points • 20 Mar 26
🍲 Food & Drink Microbiology
  1. Fermented foods likely helped shape human biology over millions of years, from genetic changes that improved alcohol tolerance to a recently evolved immune receptor that senses fermented-food molecules.
  2. Regularly eating fermented foods can boost gut microbial diversity and lower inflammation, but most people in Western diets consume far fewer servings than the amounts shown to have clinical effects.
  3. Industrial food safety and processing pushed microbes out of many foods, and scientists are now building large, standardized datasets to map which fermented-food microbes and metabolites actually drive health benefits.

The Quest for Oral GLP-1s

Asimov Press • 303 implied HN points • 16 Mar 26
🔬 Science Microbiology
  1. People overwhelmingly prefer a once‑daily pill, but peptide drugs are ruined by stomach acid and enzymes and are poorly absorbed, so oral GLP‑1s have very low bioavailability and require huge doses that make them expensive.
  2. Scientists solved injectables by changing the peptide and adding a fatty tail so the drug resists breakdown and sticks to albumin, which gives long lasting, effective once‑weekly shots that oral versions still struggle to match.
  3. A promising shortcut is to engineer edible microbes like spirulina to produce and hide GLP‑1 inside cell walls, which could protect the peptide and slash purification costs to make affordable oral pills — though safety, regulation, and public acceptance remain hurdles.

How Φ80 Infiltrates Research Labs

Asimov Press • 393 implied HN points • 13 Mar 26
🔬 Science Microbiology
  1. Φ80 quietly infects lab E. coli by integrating into bacterial genomes and replicating slowly, so cultures often look healthy while the phage accumulates and can sporadically cause cell lysis.
  2. P1-transduction, a routine method for moving genes, can unintentionally ferry Φ80 between strains because P1 infection triggers Φ80 replication, turning researchers into unwitting dispersers.
  3. Detecting and stopping Φ80 is hard because targeted or short-read sequencing usually misses prophages and researchers have little incentive to screen; adopting long-read whole-genome sequencing and greater awareness would make infections easier to spot and prevent.

The Origins of Agar

Asimov Press • 373 implied HN points • 22 Feb 26
🔬 Science Microbiology
  1. Agar is the lab staple that lets scientists grow and isolate microbes, and it made modern techniques like vaccine production, antibiotic testing, and many discoveries possible.
  2. Most lab-grade agar comes from wild-harvested Gelidium seaweed, so its supply is fragile — wartime shortages, overharvesting, climate change and recent contaminated or scarce batches have driven price spikes and alarms.
  3. Researchers have tested many substitutes, but no alternative matches agar’s combination of firmness, transparency, low cost and ease of use, and labs stick with agar because decades of methods and standards depend on it.

Grain of Terror

Vittles • 582 implied HN points • 19 Jan 26
🍲 Food & Drink Microbiology
  1. A bacterium called Bacillus cereus can survive cooking as hardy spores and produce toxins if starchy foods are left at room temperature, so improperly stored rice (and pasta) can make you sick.
  2. Western fear of reheating rice is much stronger than in many rice-eating cultures; those cultures often eat leftovers, use spices and traditional methods that may reduce bacterial growth, and the term "fried rice syndrome" is misleading and tied to historical bias.
  3. The practical rule is simple: cool cooked rice quickly, store it in the fridge or freezer, and reheat it until piping hot to minimise risk — spices might help a bit but don’t replace safe storage and reheating.
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Solving the Electroporation Bottleneck

Asimov Press • 335 implied HN points • 15 Jan 26
🔬 Science Microbiology
  1. Electroporation has a huge space of possible settings, so getting DNA into non-model microbes is often slow, hit-or-miss, and leaves researchers unsure why experiments fail.
  2. A robotic electroporator that tests many buffers, voltages, waveforms, and plasmid origins—and uses a Bayesian optimizer to choose conditions—can rapidly find working protocols and massively improve transformation efficiency.
  3. Scaling cultivation and transformation for diverse microbes will open up study and engineering of vast, untapped biological diversity, leading to new enzymes, tools, and biotech applications beyond standard lab organisms.

The Penicillin Myth

Asimov Press • 593 implied HN points • 24 Nov 25
🔬 Science Microbiology
  1. The story of Alexander Fleming discovering penicillin is filled with uncertainty. Scientists have pointed out many inconsistencies in his account, like how he didn't notice the contamination for almost two months after supposedly finding it.
  2. Fleming's famous discovery might not have been as accidental as it seems. Some theories suggest he was actually looking for new antibacterial substances before penicillin came along; this implies he was actively searching for something valuable rather than just stumbling upon it.
  3. There are competing theories for how penicillin was discovered and its implications for science. Whether it was truly an accident or part of a more planned inquiry shows how scientific discoveries can happen through both chance and careful research.

Animalcules and Their Motors

Asimov Press • 399 implied HN points • 13 Nov 25
🔬 Science Microbiology
  1. Scientists have made big improvements in cryo-electron microscopy, which helps them see how tiny microbes move by looking at their flagella, or tails. This technique allows researchers to understand the complex structure of these microscopic motors.
  2. Different bacteria have unique adaptations in their flagella to fit their environments. For instance, some microbes can spin their flagella incredibly fast to swim in water, while others, like those in the human gut, have stronger motors to move through thick fluids.
  3. The flagellum is a remarkable molecular machine that assembles itself from many proteins. It works by using protons flowing across the cell membrane, which creates the energy needed to make it spin and help the cell move.

Flowers and flours

Wordloaf • 884 implied HN points • 24 Jan 24
🍲 Food & Drink Microbiology
  1. Debra Wink, a sourdough expert, recommends using pineapple juice in the initial starter mixture to create favorable conditions for lactic acid bacteria and yeast growth.
  2. Monitoring and adjusting the pH of sourdough starters can play a key role in activating yeast and preventing undesirable bacteria, leading to successful starter maintenance.
  3. Leaving starters at room temperature instead of refrigerating them for short periods can help retain their robustness and enhance their performance.

It's Only Ice (Like Nothing You've Ever Seen)

Everything Is Amazing • 1697 implied HN points • 07 Feb 25
🔬 Science Microbiology
  1. Ice flowers are unique formations in the Arctic created by a process called sublimation, where water vapor turns directly into ice. They can actually support microbes even though they are very salty.
  2. Hair ice is another strange phenomenon that resembles frozen hair, formed by a fungus that stabilizes thin strands of ice. This shows how nature can create artistic ice structures.
  3. Pykrete is a mix of ice and sawdust proposed as a material for building a large aircraft carrier during World War II. Although interesting, it was deemed impractical because it required constant cold temperatures to maintain its structure.

A Biologist's Guide to Biotech

A Biologist's Guide to Life • 22 implied HN points • 12 Feb 26
🔬 Science Microbiology
  1. Biotechnology—from ancient agriculture to modern medicine—powers food and health and has transformed human society and life expectancy.
  2. Research tools like sequencing, PCR, CRISPR, and lab automation accelerate discovery and are often easier to commercialize than whole crops or drugs because they avoid heavy clinical and scaling barriers; selling them means convincing scientists they cut costs or enable new, publishable work.
  3. Building biotech companies is very different from building software: it requires lab space, expensive reagents, patents, regulatory know-how, and often partnerships with big ag or pharma, so science training should better prepare people for these practical business and legal realities.

222 | How does cereulide get into infant formula? Which GFSI Scheme is Best? |

The Rotten Apple • 52 implied HN points • 19 Jan 26
🍲 Food & Drink Microbiology
  1. Cereulide in the infant formula recall likely came from a contaminated ingredient, possibly ARA oil made by fungal fermentation, where the toxin from a starchy fermentation substrate could partition into the oil.
  2. Cereulide is a heat‑stable, highly potent emetic toxin produced by Bacillus cereus in starchy materials; once formed it survives cooking and reheating, so control relies on preventing bacterial growth (rapid cooling, cold storage ≤5 °C, strict hot‑holding or discard rules).
  3. Pick a GFSI certification that fits your target markets, company maturity, local auditor availability and budget because there’s no one‑size‑fits‑all; importantly, GFSI clarified auditors with equivalent industry experience (not just degrees) remain eligible, easing the auditor shortage.

Lungs

Microanimism • 139 implied HN points • 24 May 24
🔬 Science Microbiology
  1. Biological systems like lungs demonstrate asymmetry and imperfection, showcasing the complexity of biology over mathematical perfection.
  2. Microbial worlds in our lungs and in the atmosphere interact in complex ways, affecting our health and environment.
  3. The evolution and existence of lungs are deeply intertwined with microbial life, showcasing a long history of collaboration for the sustenance of life.

The golden age of vaccine development

The Works in Progress Newsletter • 45 implied HN points • 08 Jan 26
🔬 Science Microbiology
  1. Vaccines used to be lucky accidents but are now deliberately designed using detailed knowledge of microbes, cells, and the immune system.
  2. New tools let us build precise vaccines from specific proteins or mRNA, making them safer, easier to optimize, and avoid using whole pathogens.
  3. Faster sequencing, better delivery systems, and improved manufacturing let vaccines be developed and updated in weeks, and continued investment will unlock even more progress.

Cable Bacteria are Living Batteries

Asimov Press • 335 implied HN points • 23 Jul 25
🔬 Science Microbiology
  1. Cable bacteria are unique microbes that act like living batteries by transferring electrons over long distances in mud. They help oxidize sulfide deep in sediment and transport energy to places where it can access oxygen.
  2. The discovery of cable bacteria challenges traditional views in biology, showing that organisms can work together like circuits and coordinate their energy processes over large spaces, which was not thought possible before.
  3. These bacteria have potential environmental benefits, like reducing methane emissions in rice paddies, but growing them for practical use is difficult, as they can't be cultured alone or genetically modified yet.

The Vaccine Revolution Will Now Be Televised

Viruses Must Die • 44 implied HN points • 19 Dec 25
🔬 Science Microbiology
  1. Ordinary brewer's yeast can be engineered into food-grade vaccines, and the experiments were reportedly doable on a simple household budget.
  2. This method could decentralize vaccine production so people or local microbreweries could make vaccines, potentially bypassing slow licensing and surviving even severe social disruptions.
  3. The target is viruses like polyomaviruses that cause serious illness (for example painful bladder disease in transplant patients), so edible vaccines could prevent a lot of suffering.

(The Divine) 1. Voracious Life (Khepri)

Microanimism • 79 implied HN points • 01 Jun 24
🎨 Art & Illustration Microbiology
  1. The sun has a profound connection to humanity and microbial life, influencing circadian rhythms and photosynthesis.
  2. Khepri, the scarab-headed god in Ancient Egyptian religion, symbolizes the life-giving and renewing qualities of the sun through resurrection.
  3. Bacteria can enter a state of suspended animation by forming tough spores, demonstrating voracious life deriving seemingly from nothing.

Links for Winter 2026

Telescopic Turnip • 31 implied HN points • 28 Dec 25
🔬 Science Microbiology
  1. Some viruses can trigger bacteria to self-organize into a single, coordinated structure, producing collective behaviors that look a lot like a hive mind.
  2. Gene-level molecular clocks suggest mitochondria were acquired relatively late, after the nucleus, cytoskeleton, and vesicle-transport systems had already evolved, which challenges the idea that mitochondria jump-started eukaryotic complexity.
  3. Forbidding children from moving or fidgeting appears to impair creativity, and larger studies are needed before treating stillness as a universal schooling requirement.

What is Vaccine Beer

Viruses Must Die • 35 implied HN points • 24 Dec 25
🔬 Science Microbiology
  1. Live brewer’s yeast engineered to make viral proteins can be put into beer and may trigger antibody responses; the authors drank such “vaccine beer” and reported no discernible side effects.
  2. They show you can recreate the necessary plasmids and brew vaccine-containing beer outside a university lab using commercial DNA synthesis and readily available home-lab and brewing supplies, making the approach accessible to homebrewers and small food producers.
  3. They argue food-based vaccines could lower cost and increase access, and that current US law could allow these products to be marketed as GRAS foods so long as no disease-prevention claims are made, while formal medical efficacy testing would remain under regulatory oversight.

A Toast to Vaccine Beer

Viruses Must Die • 35 implied HN points • 21 Dec 25
🔬 Science Microbiology
  1. Vaccines can be delivered through everyday foods like yeast or beer, which could make immunization simpler, cheaper, and more widely accessible.
  2. The current drug approval system’s heavy safety theater and monopoly incentives have increased public distrust and helped anti-vaccine sentiment gain influence.
  3. Treating vaccine-foods as consumer products with independent third-party testing and public reviews could rebuild trust, encourage competition, and provide transparent information on safety and effectiveness.

Spinning Bacteria

Asimov Press • 186 implied HN points • 31 Jul 25
🔬 Science Microbiology
  1. Scientists discovered how bacteriophages, or phages, time their escape from bacteria by spinning them. This helped them understand when phages decide to burst out after infecting a host.
  2. The research showed that phages wait until just the right moment, keeping the bacteria's energy intact until they are ready to reproduce as many phages as possible.
  3. Using a clever spinning technique and measuring the bacteria's electrical gradient, researchers found that if the charge drops by half, phages trigger lysis immediately, maximizing their chances of survival.

My White Whale

Eat Shit and Prosper • 359 implied HN points • 06 Oct 23
🔬 Science Microbiology
  1. Centenarians tend to have unique gut bacteria that could be linked to their long lives. This suggests that what we have in our gut might play a big role in our health.
  2. Certain types of bacteria, particularly a genus called Bacteroides, are important for a strong immune system and may help fight cancer.
  3. One surprising finding is that a specific bacterium called Epulopiscium is found more often in the guts of centenarians, hinting it could be connected to their longevity.

Yeast-based vaccines are a big deal for biosecurity

More is Different • 6 implied HN points • 07 Feb 26
🔬 Science Microbiology
  1. Engineered baker's yeast that displays viral proteins can trigger protective antibody responses when eaten, showing edible vaccines are possible.
  2. Yeast vaccines can be produced and distributed quickly and locally—through brewing, dried chips, or feed—making decentralized pandemic and livestock responses feasible.
  3. Edible yeast vaccines may reduce needle-related hesitancy and lower some regulatory barriers, but they still face important challenges like oral tolerance, safety, and the need for proper clinical trials and regulatory clarity.

The Evolutionary Scales of Life

A Biologist's Guide to Life • 15 implied HN points • 27 Dec 25
🔬 Science Microbiology
  1. Ecological patterns depend on the spatial, temporal, and evolutionary scale you examine; changing the scale can reveal or hide important patterns.
  2. Phylofactorization is an algorithm that finds edges or clades in a phylogenetic tree that best explain differences in traits or ecological patterns, letting you partition life at the scales that matter for a given question.
  3. There is no single correct species or taxonomic scale; instead choose or infer the lineage-level scales that match your question, and tree-based partitioning can also reveal relevant scales in non-biological hierarchical systems.

On the Origins of Multiple Sclerosis

Eat Shit and Prosper • 479 implied HN points • 04 Feb 23
🏥 Health Politics Microbiology
  1. Taking antibiotics might increase your risk of developing multiple sclerosis (MS). Studies from Denmark show that anyone who gets a prescription for antibiotics has a higher chance of being diagnosed with MS later.
  2. There is a potential connection between certain bacteria in our gut and MS. One particular bacteria, _Clostridium perfringens_, may produce a toxin that damages the cells responsible for protecting nerves in the brain.
  3. Understanding MS as a complex interaction between bacteria, antibiotics, and the immune system can lead to new treatments. There are even hopes for using therapies like fecal transplants or targeted therapies to help those suffering from MS.

Literally Imagine Dragons

Eat Shit and Prosper • 259 implied HN points • 07 May 23
🔬 Science Microbiology
  1. Chlorophyll and heme are both essential chemicals in life, with similar structures that play key roles in energy production and oxygen transport. Chlorophyll helps plants make energy from sunlight, while heme carries oxygen in our blood.
  2. There's a mysterious porphyrin with vanadium at its center found in crude oil. It could belong to an ancient life form, and studying it may reveal new insights into the history of life on Earth.
  3. The idea of a lost type of microbial chemistry, possibly allowing for 'silanogenesis', imagines how ancient creatures might have used silicon compounds like silane for energy, similar to how some modern microbes produce methane.

(Thinking Like a Plague) 1. Microbe-botherers

Microanimism • 19 implied HN points • 05 Jun 24
🔬 Science Microbiology
  1. Microbiology is the study of microorganisms, where scientists explore what they do and how they function, making microbiologists essentially 'microbe-botherers.'
  2. The term 'microbe' serves as a broad, inclusive label, encompassing various tiny organisms, even if specific scientific terms like 'microbial' are more accurate for certain contexts.
  3. Subscribing to Microanimism gives you access to insightful posts like this one and a 7-day trial to explore the full archives.

The Love Bug

Eat Shit and Prosper • 319 implied HN points • 17 Jan 23
🔬 Science Microbiology
  1. Oxytocin is known as the 'love hormone' and is linked to feelings of bonding and social connection. It plays a role in childbirth and breastfeeding, helping to create strong bonds between parents and children.
  2. A specific gut bacterium, Lactobacillus reuteri, can increase oxytocin levels in animals. This bacterium is important for healing and may influence our social behaviors and immune response.
  3. Oxytocin can also affect how we view others, creating in-groups and out-groups. It can enhance connections within a group but might lead to negative feelings towards those outside the group, highlighting the complexities of human relationships.

(Temple Prokarya) 1. A brief manifesto: I think this is important

Microanimism • 19 implied HN points • 31 May 24
🔬 Science Microbiology
  1. Pathogens like bacteria and viruses do not have a desire to make us sick, they simply exist and propagate efficiently.
  2. Exploring the morality of survival in the face of life-threatening diseases can lead to deeper philosophical discussions about microbial behavior.
  3. Human activities like deforestation and increased contact with wild animals are linked to the emergence of new infectious diseases, highlighting the impact of our actions on public health.

Welcome to the Jungle

Eat Shit and Prosper • 279 implied HN points • 15 Oct 22
🏥 Health & Wellness Microbiology
  1. Our gut is home to a complex ecosystem of bacteria that we rely on for many essential functions in our body. This relationship has developed over thousands of years and is crucial for our health.
  2. Taking antibiotics can disrupt this delicate balance in our gut ecosystem, potentially leading to long-term health issues. It's important to recognize that this can harm our bacterial diversity and stability.
  3. There may be hope for treating diseases linked to gut health through methods like fecal transplants. Understanding the importance of our internal ecosystem can help us find better solutions for health problems.

The Thousand Secret Ways the Food is Poison: Part 1

Eat Shit and Prosper • 259 implied HN points • 25 Oct 22
🍲 Food & Drink Microbiology
  1. Pay attention to your gut health. The bacteria in your gut help process food and can affect your mental and physical health.
  2. Many foods today contain harmful substances like Roundup. To stay healthy, try to eat organic and avoid processed foods that might have these toxins.
  3. Avoid antibiotics unless necessary. They can disrupt your gut bacteria, which help detoxify your body from heavy metals and other harmful substances.

Gas Chamber: An Industrial Accident at a Poop Science Lab

Eat Shit and Prosper • 159 implied HN points • 09 Apr 23
🔬 Science Microbiology
  1. Working with bacteria, especially in a lab, can lead to unexpected and funny situations. In this case, a vacuum chamber experiment led to an overwhelming smell due to fermentation gases.
  2. It's important to follow safety protocols, like weighing flasks, when handling materials in a centrifuge to prevent accidents.
  3. Despite the humorous mishap, the science behind using gut bacteria for mental health treatments shows promise and is an exciting field.

Why We're Not Engineering Probiotics

Eat Shit and Prosper • 139 implied HN points • 31 Jan 23
🔬 Science Microbiology
  1. Natural bacteria like _Bacteroides_ can do important tasks in our bodies better than engineered ones. They have evolved over millions of years and have a complex understanding of their role in our ecosystem.
  2. Engineering probiotics may seem like a safe option, but it often overlooks the richness of existing microbes that might serve our needs without modification.
  3. Working with natural bacteria could lead to breakthroughs in health similar to how domesticated animals have changed human life in the past; there's so much potential waiting to be explored.

Cheating at Evolution

Eat Shit and Prosper • 159 implied HN points • 01 Nov 22
🔬 Science Microbiology
  1. Bacteria can share genes with each other quickly, helping them adapt and survive in their environment. This 'horizontal gene transfer' allows them to grab useful traits without the slow process of traditional evolution.
  2. Some animals eat feces to gain beneficial bacteria that help them digest tough foods and absorb nutrients. This behavior helps spread helpful microbes more quickly among their populations.
  3. Understanding how microbes influence our health could lead to new treatments for various diseases. Using healthy microbes from poop could potentially improve a person's well-being significantly.

Forget Gene Therapy. Microbes are the Future of Medicine.

Eat Shit and Prosper • 159 implied HN points • 28 Oct 22
🔬 Science Microbiology
  1. Microbes in our gut act like software, constantly changing and adapting, while our genes stay mostly fixed. This flexibility allows our bodies to optimize their functions more effectively.
  2. Unlike permanent changes in our DNA, mutations in microbes can lead to quick advantages without the risk of harmful outcomes. This means our body can benefit from favorable changes without damaging our core genetic makeup.
  3. Using microbes to adapt to different diets or conditions is faster and less risky than gene therapy. Microbes evolve quickly, making them a promising tool for improving health and dealing with diseases.

Stories We’d Like to Publish

Asimov Press • 174 implied HN points • 03 Mar 24
🔬 Science Microbiology
  1. Asimov Press is publicly sharing ideas for essays they'd like to publish and inviting writers to contribute by emailing them at [email protected].
  2. Topics in biotechnology range from synthetic blood development to artificial wombs and synthetic nitrogen fixation, showcasing the broad spectrum of innovative research being undertaken.
  3. Biotechnology advancements aim to address a variety of issues, such as animal welfare, predictive growth models for microbes, and challenges in protein structure prediction, highlighting the diverse applications and potential impact of biotechnological research.

Unsolved Problems in Biosafety

A Biologist's Guide to Life • 5 implied HN points • 25 Nov 25
🔬 Science Microbiology
  1. Biosafety faces ongoing challenges that need attention. It's crucial to keep exploring these issues to find solutions.
  2. Understanding and managing risks from biological agents is complex. We need clear strategies to handle those risks effectively.
  3. Engaging in open discussions about biosafety is important. Sharing ideas can help us tackle these scientific puzzles better.

Microarrays: What are they for?

ASeq Newsletter • 36 implied HN points • 11 Feb 25
🔬 Science Microbiology
  1. Microarrays are often seen as an alternative to sequencing, but some argue sequencing is generally a better option for many applications. It's important to consider these viewpoints when discussing the technologies.
  2. The microarray market is stable, worth around $1 billion, with platforms like Illumina's Beadarray holding a significant share. This indicates that there is still a solid demand for microarray technology.
  3. Reassessing biases about technologies like microarrays can help us understand their current relevance and future potential. It’s always a good idea to keep an open mind when evaluating scientific tools.