The hottest Environmental health Substack posts right now

And their main takeaways
Category
Top Health & Wellness Topics

Glyphosate: A story of science, risk, and nuance

Your Local Epidemiologist • 1478 implied HN points • 25 Mar 26
🔬 Science Environmental health
  1. Glyphosate is the world’s most used herbicide, and whether it is harmful depends on the dose and how much someone is actually exposed to.
  2. The science is mixed: very high doses cause cancer in animals, some human studies link heavy occupational exposure to higher risks (including signals for non‑Hodgkin lymphoma), but typical consumer exposures are much lower and the overall population risk remains uncertain.
  3. For everyday life, food residues are generally tiny and not a reason to panic, but farm workers and people living near sprayed fields face higher exposures and should use protective gear and community measures like buffer zones.

A dark and killing cloud over Tehran

The Crucial Years • 6178 implied HN points • 09 Mar 26
🌞 Climate & Environment Environmental health
  1. Bombing Tehran’s oil depots created a huge, toxic smoke cloud that acted like chemical warfare, exposing civilians to carcinogens, acidic runoff, and long-term health and environmental harm.
  2. The smoke plunged the city into darkness and caused severe breathing, eye, and skin problems, trapping people who can’t safely go outside or flee and making public protest or daily life nearly impossible.
  3. The strikes reflect a deliberate, cruel strategy that worsens civilian suffering and contradicts stated goals of liberating Iranians, while also strengthening the argument for moving off fossil fuels and pushing for change in American policy.

Endangerment Finding, bird flu, what counts as professional degrees, and more

Your Local Epidemiologist • 1029 implied HN points • 24 Feb 26
🏥 Health Politics Environmental health
  1. A proposed Education Department rule would narrow which graduate programs count as “professional,” risking lower federal loan limits for public health, nursing, social work, physician assistant, and similar students and making these careers harder to afford.
  2. Repealing the Endangerment Finding weakens the EPA’s legal authority to limit greenhouse gases, which will likely increase air pollution and related health harms like asthma, heart and lung disease, and premature deaths, even as courts and states push back.
  3. A major H5N1 bird flu outbreak has infected millions of birds (mostly in commercial flocks), so the virus is circulating in poultry and wild birds; the risk to most people remains low, but poultry owners should follow testing and biosecurity guidance.

Movers and Shakers: Can you sue over Parkinson's?

Rory’s Always On Newsletter • 674 implied HN points • 05 Oct 24
🏥 Health Politics Environmental health
  1. It's unclear if people with Parkinson's can sue for their condition. A recent case showed the link between Parkinson's and chemicals like TCE isn't proven enough yet.
  2. The case of Holmes v Poeton involved a worker who claimed his Parkinson's was caused by chemical exposure at work. Courts found the evidence too weak to support this claim.
  3. Studies suggest some chemicals might increase the risk of Parkinson's, but proving direct causation is hard because many factors can influence health conditions.

Measles is off to an ugly start, EPA removes lives lost, ICE and hospitals, and lots of good news

Your Local Epidemiologist • 1639 implied HN points • 20 Jan 26
🏥 Health Politics Environmental health
  1. Measles is surging unusually early, with large outbreaks in low-vaccination pockets causing many cases, quarantines, and spread to other states. If you’re fully vaccinated you’re very well protected, and parents of babies under 12 months should talk to their pediatrician about early vaccination.
  2. The EPA will stop counting the dollar value of lives saved in cost-benefit analyses for major air pollutants, a change that makes pollution rules look more costly and makes it easier to weaken protections. This will likely harm communities near highways and industrial sites, especially low-income and marginalized groups.
  3. Increased ICE enforcement is creating fear that keeps people from seeking medical care, which can worsen health for families and communities. Schools and clinical teams can play key roles in supporting affected families and connecting them to local resources.
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The Microplastic Concerns Elevate—To the Brain

Ground Truths • 13384 implied HN points • 03 Feb 25
🏥 Health Politics Environmental health
  1. Microplastics are accumulating in the brain and other organs, with much higher levels found in people with dementia. This is raising alarms about their possible effects on health.
  2. Studies have shown that microplastics can affect blood flow in the brain, leading to issues like blood clots. This suggests they could contribute to neurological problems.
  3. To reduce exposure to microplastics, people can avoid plastic packaging and heating plastic items. There's also a need for broader action to cut down plastic production overall.

Odd bedfellows: Moving with MAHA from conversation to collaboration

Your Local Epidemiologist • 2004 implied HN points • 30 Jul 25
🏥 Health Politics Environmental health
  1. Collaboration between public health experts and grassroots movements is powerful. By working together, they can tackle important health issues that directly affect communities.
  2. Addressing health problems can involve simple, effective solutions like providing grocery access to low-income patients. This approach shows how public health can be practical and impactful.
  3. Building trust and relationships is key in public health. It's important to listen to local voices and work with those who have firsthand experience with health challenges.

Conflating No Detectable Harm with Zero Harm and the Second Elephant

Gordian Knot News • 146 implied HN points • 22 Jan 26
🏥 Health Politics Environmental health
  1. Saying "no detectable harm" is the same as "zero harm" is misleading: biological repair can make extra radiation damage undetectable but not literally zero, so a tiny nonzero risk can remain.
  2. Competing harm models (like LNT versus repair-aware models) produce vastly different low-dose risk estimates, so claiming absolute zero harm invites logical and rhetorical attacks and weakens your position.
  3. For regulation and to avoid crippling tort liability, the industry needs a clear, quantitative radiation-harm model to calculate compensation and make nuclear power economically viable even when releases cause no detectable health effects.

A plague death, floods’ health impact, vaccine injuries hearing at Senate today, Covid still low, and more

Your Local Epidemiologist • 1405 implied HN points • 15 Jul 25
🏥 Health Politics Environmental health
  1. A recent plague death in Arizona reminds us that while it's rare, the disease can still occur. Staying aware and cautious in areas where it's found is important.
  2. Flooding not only causes immediate harm but also leads to long-term health issues, with thousands more deaths linked to stress and other health risks. Climate change is worsening flood risks, making community preparedness vital.
  3. Today, a Senate hearing will discuss vaccine injuries, which is sensitive and complex. It’s crucial to listen to concerns, but also to recognize that vaccines are generally safe and supported by most people.

Covid still quiet, measles, ticks, smoke, EMTALA, and seed oil confusion

Your Local Epidemiologist • 1232 implied HN points • 09 Jun 25
🏥 Health & Wellness Environmental health
  1. A new class of antibiotics has been approved for treating urinary tract infections, which is great news in the fight against antibiotic resistance.
  2. Measles cases are rising in several states, especially among unvaccinated children, highlighting the importance of vaccination during summer travel.
  3. Wildfire smoke from Canada is affecting air quality in many areas, so it's smart to check local air quality levels and take safety precautions when needed.

YLE milestone, Red Dye #3, air quality in LA, raw cat food, and more on alcohol.

Your Local Epidemiologist • 1187 implied HN points • 17 Jan 25
🏥 Health & Wellness Environmental health
  1. The FDA has banned Red Dye No. 3 from food and drugs because it was linked to cancer in lab animals. Even though it's mostly gone already, some products in stores still have it.
  2. Air quality can be misleading after wildfires. Just because the air is rated as 'healthy' doesn't mean it's safe, as many harmful pollutants might still be present.
  3. Moderate drinking might not be as safe as we thought. Recent reports suggest that even one drink a day could increase health risks, especially if there are other health issues involved.

The pox is back

¡Do Not Panic! • 432 implied HN points • 21 Jun 23
🏥 Health & Wellness Environmental health
  1. Sexually transmitted infections have spiked to generational highs in recent years globally.
  2. The weakening of population immunity due to mass COVID infections is a likely cause for the rise in STIs.
  3. Environmental toxins and pollution, including air pollution, are damaging sperm counts and threatening reproductive health.

Who is Robert F. Kennedy Jr.?

Who is Robert Malone • 25 implied HN points • 28 Dec 25
🏥 Health Politics Environmental health
  1. Robert F. Kennedy Jr. moved from environmental law into a prominent role challenging pharmaceutical and public health institutions and now serves as HHS Secretary pushing anti‑corruption reforms.
  2. His policy agenda focuses on three pillars — transparency, detoxification, and decentralization — including public access to raw trial and CDC data, phasing out suspected toxic chemicals, and breaking up concentrated federal health authority.
  3. A major CDC audit under his leadership reportedly uncovered data suppression, conflicts of interest, and questionable handling of autism data, leading to legal referrals, grant freezes, and plans to release terabytes of raw epidemiological data for independent review.

Headlines of the Warming World No 15

The Climate Historian • 19 implied HN points • 02 Jul 24
🌞 Climate & Environment Environmental health
  1. Denmark has introduced the world's first carbon tax for agricultural emissions to fight climate change. This tax aims to reduce greenhouse gas emissions from livestock farming and could inspire other countries to take similar action.
  2. Extreme heatwaves are becoming more common and severe around the world due to climate change. Recent heatwaves in places like India and Mexico have resulted in fatalities and power outages.
  3. Microplastics have been found in human tissue, including penises, raising concerns about their impact on health. This highlights the widespread issue of microplastic pollution and its potential effects on the human body.

The State of Children's Health

Splattern • 19 implied HN points • 04 Jun 24
🏥 Health & Wellness Environmental health
  1. Children's health has improved over the years, but many are still facing serious issues like poor nutrition and mental health problems. There's a need for better support in different areas to help them thrive.
  2. In the US, reducing greenhouse gas emissions could lead to better health for children by improving air quality and nutrition. It’s also important for kids to feel a sense of purpose amidst challenges.
  3. In places like Tanzania, children's health problems are more about basic needs like food and medical resources. Building hospitals and providing proper care is essential to help those kids succeed.

Exposed: The Hoax That Targeted Health Freedom

Who is Robert Malone • 18 implied HN points • 15 Nov 25
🏥 Health Politics Environmental health
  1. Two men tricked health freedom event attendees by pretending to be activists against fake meat and presenting a fake study that linked it to autism. They wanted to capture misleading interviews for a documentary.
  2. This deception was carefully planned, showing that some groups are using sneaky tactics to undermine health movements and discredit their leaders. It's important for people to stay aware and think critically.
  3. The incident highlights a larger issue where powerful organizations may fund misinformation campaigns to attack those who challenge their narratives. It's a reminder to be cautious about who you trust and what claims you accept.

Problems of the Modern World

David Friedman’s Substack • 188 implied HN points • 01 Dec 24
🏥 Health Politics Environmental health
  1. There are many problems in the modern world, like rising autism rates, obesity, and lifestyle changes, but their causes are not always clear.
  2. Different factors, such as environmental changes, political decisions, and lifestyle habits, might be contributing to these issues.
  3. Identifying the true causes of these problems is complex and might require more research to understand what’s really happening.

Glyphosate - Drying Agent and Herbicide for Soy and Wheat and its Potential Health Impacts

Molecular Spectacular • 168 implied HN points • 13 Dec 24
🏥 Health Politics Environmental health
  1. Glyphosate, a common herbicide, has been linked to health risks like increased cancer risk and endocrine disruption. Many studies suggest a troubling connection between glyphosate levels in humans and serious health issues.
  2. Soy protein consumption is strongly connected to higher levels of glyphosate's byproduct, AMPA, in urine. This indicates that what we eat can affect how much of these chemicals we accumulate in our bodies.
  3. There are hints that glyphosate might disrupt gut health, which could impact digestion of gluten. This might be related to rising gluten allergies, especially in sensitive populations like infants.

What if you just bought everyone air purifiers?

DYNOMIGHT INTERNET NEWSLETTER • 296 implied HN points • 25 Jan 24
🔬 Science Environmental health
  1. Buying air purifiers for everyone could extend life expectancy, but at a high cost compared to other health interventions.
  2. The cost of buying air purifiers for random Americans to extend life expectancy is $32,899 per DALY, which is not as efficient as other healthcare interventions.
  3. Air purifiers may be a good health investment for individuals, but philanthropically, they are not as cost-effective as other interventions like malaria drugs.

One Health is a Massive Globalist Grantmaking Scam

eugyppius: a plague chronicle • 164 implied HN points • 26 Feb 24
🏥 Health & Wellness Environmental health
  1. One Health is criticized for being a globalist grantmaking scam, seen as a relabelling of prior initiatives.
  2. The concept of One Health is described as convoluted with unclear objectives, and its foundational principles are questioned for lacking coherence.
  3. Many One Health Networks (OHNs) are perceived as superficial attempts to access funding, lacking substantial impact or clarity in their purpose.

The end of lead

The Works in Progress Newsletter • 15 implied HN points • 03 Jul 25
🏥 Health Politics Environmental health
  1. Lead exposure has serious health risks, especially for children, causing problems like high blood pressure and cognitive issues.
  2. Efforts to reduce lead in environments, like banning leaded gasoline and paint, have made significant progress but there are ongoing challenges in poorer countries.
  3. We already have solutions to eliminate lead exposure; we just need to implement them globally, especially by regulating sources like cosmetics and battery recycling.

One Health and the Deep State

Who is Robert Malone • 15 implied HN points • 12 Feb 25
🏥 Health Politics Environmental health
  1. The One Health initiative focuses on balancing the health of humans, animals, and the environment, which can sometimes seem anti-human. This means decisions may prioritize animal or environmental health over human needs.
  2. There's a concern that the One Health approach could lead to more government surveillance and control over individuals' lives, similar to socialism. It aims for fairness but might treat people differently to achieve that.
  3. The recent One Health framework by the CDC is seen as a plan for future pandemic responses, encompassing broader issues like climate change and social health, which could restrict personal freedoms.