Johnny Bowman

Environmental health in NYC.

[Johnny Bowman @johnnyfbowman]

@abhinavguptaIAQ @Breethr_HQ Was going to say @Breethr_HQ is on this and then saw this.

Love what you guys are doing on air quality.

[Aftab Khan, MD @aftab_usa]

Damn, that’s wild—Harvard stuck 24 office workers in the same room for 6 days, secretly tweaking the air quality (ventilation, CO2, and VOCs from typical office stuff), and their cognitive scores doubled in the cleaner “green+” conditions vs. standard stale setups. Better decision-making, strategy, crisis response—all crushed by poor indoor air we breathe 90% of the time.
Open windows, crank ventilation, cut the junk emitters. Your brain’s paying the price right now. Fix the air, sharpen the mind.

[Johnny Bowman @johnnyfbowman]

GM for Lightwork Home Health NYC here.

While it's too early to say what EMF frequencies, at what thresholds, definitely cause adverse health outcomes, IMO there's plenty to be cautious about.

You can read about the state and limits of current EMF science here:
https://t.co/pqzqoyjXfn

and here: https://t.co/6L1bIikrd5

[Johnny Bowman @johnnyfbowman]

@RHAlexander @lennysan Body voltage meters, which are useful for understanding exposure to the body

[Johnny Bowman @johnnyfbowman]

@SarahAllali7 @lennysan GM for Lightwork Home Health NYC here.

While "normal" exposure levels are debated, there are a number of studies showing correlations between common EMF levels and adverse health outcomes.

Our thinking on this is more thoroughly explained here: https://t.co/Co0tIV7awo

[Johnny Bowman @johnnyfbowman]

@strawndk @lennysan Cleaning is key!

[Johnny Bowman @johnnyfbowman]

@onchain_brewer @lennysan @lightworkhome Lightwork GM for NYC here. Here's what I have in my home: https://t.co/bB6jd5fSd0

Very reliable, lower cost, and lower maintenance than a lot of RO systems out there. I also appreciate the remineralization.

[Lenny Rachitsky @lennysan]

I did a whole-house toxin health assessment, where a guy spent half a day testing our house's air quality, water, EMFs, lighting, mold, and household products.

So many surprises:
- Our Waterdrop reverse-osmosis water filter seems to be introducing a chemical (Dichloromethane) into our drinking water that wasn't in the (whole-house filtered) tap water. Will recheck this to make sure it's not a fluke.
- Even though we have air purifiers in many parts of the home, they weren't on the proper setting so our air quality was not great. Turned them all up higher.
- Most of our light bulbs have blue light and super high flicker rates which disrupt circadian rhythms. Replacing a bunch of them.
- The wifi router in my office is EMF'ing the sh*t out of me. Going to move it to a different part of the room.
- The powerstrip under our bed is EMF'ing the sh*t out of us. Getting a grounded power strip that avoids this.
- Some of our shampoos and soaps had harmful ingredients.

On the plus side, no gas leaks or carbon monoxide 👌

I'm predicting this is going to become the next microplastics-type trend, to test your home for toxins and harmful products.

[Johnny Bowman @johnnyfbowman]

Link to the article: https://t.co/abntadwe5G

Link to the tool: https://t.co/SoYPlvmYBa

[Johnny Bowman @johnnyfbowman]

NYC's public air quality tools are nifty, and lead to useful reporting like this.

[Lightwork Home Health @lightworkhome]

We tested @awilkinson's house. He's as health-conscious as they come (and his house was top tier). But we still found room for improvement.

In his recap, he said:

"I've talked to a bunch of friends about this. The ones who've gotten their homes tested all have the same thought: 'It's insane that nobody checks this stuff.'"

[Johnny Bowman @johnnyfbowman]

@ryanproddy Thanks for the @lightworkhome shoutout Ryan!

And great intro to home health for folks getting into this.

[Johnny Bowman @johnnyfbowman]

Great intro to home health from @ryanproddy

[Ryan Roddy @ryanproddy]

🧵 You're lifting, eating clean, tracking HRV—but still feel foggy and tired. Plot twist: the problem might not be your body. It's probably your house.

We spend 90% of our time indoors, and most homes are quietly terrible for us. Here's what's actually going on:

[Johnny Bowman @johnnyfbowman]

@jwmares Exciting to continue copying every health trend I care about from you Justin.

[Johnny Bowman @johnnyfbowman]

I got an email from @jwmares 9 years ago saying "dug your blog. coffee?"

He's been 2 years ahead of me on every health trend I've embraced since then.

So it is extremely cool to announce @lightworkhome and our work on home environmental health with Justin.

Also, read his blog.

[Justin Mares @jwmares]

I've written extensively about how our environment is poisoning us, creating the sickest generation of Americans we've ever seen. And I suspect one of the core contributors to Americans' poor health is their home environment.

Think about it. Our ancestors lived outside by default, breathed fresh air, had natural light cycles, and weren't surrounded by synthetic chemicals. Most homes are pretty much the opposite.

Understanding and fixing the 1000 things that could cause issues in your house is a pain. That’s why I'm incredibly excited about what my friends @andy_bromberg and Alexa are building at Lightwork Home Health.

After their own health journey (which was wild - see below), Lightwork is creating what I'd call "functional medicine for your home environment."

Lightwork launches this week to help people identify and fix the parts of their homes that might be making them sick. Think comprehensive testing and personalized recommendations for everything from lighting to air quality to non-toxic water filtration - https://t.co/hr3lV9Flu7

I genuinely believe in this, so much so that I helped Andy and Alexa get Lightwork off the ground last year, and I joined them and Jay Devram as a (non-operational) co-founder. I’m also thrilled that @johnnyfbowman and @DomFrancks are leading the flagship NY and SF locations.

If chronic disease is environmental (and I think it is), your home environment is one of the biggest levers for change. I think focusing on the home as a source of disease will help millions of people improve their health, and am thrilled that Lightwork is finally in the world.

[Johnny Bowman @johnnyfbowman]

I feel incredibly lucky to be part of this team.

Origin story of @lightworkhome 👇

[Andy Bromberg @andy_bromberg]

My wife Alexa and I learned the hard way: homes can be (very) toxic. It took us a year to find & fix the cause of our health issues.

Nobody should need to go through that.

So w/ our friend @jwmares we incubated Lightwork: the world's most data-driven home health assessment.

🧵

[Johnny Bowman @johnnyfbowman]

@RosaPit72897381 hear! hear!

[Johnny Bowman @johnnyfbowman]

If there's one man I've looked up to over the last 5 years, it's Manchán Magan.

He passed away yesterday.

If you're Irish American and haven't checked him out, give his interviews and books a spin. He helped make the Irish language, mythology, baking soda bread, and rewilding landscapes cool again.

His ancestors were Irish bards that wore crimson cloaks of feathers and leaders in the Irish war for independence. Helluva lineage.

I hope he spawns a hundred copy cats. He helped me connect to a sense of spirit like no one else.

Also he responded to my emails, despite me being a stranger and him dying of cancer. Absolute mensch.

RIP Manchán.

[Johnny Bowman @johnnyfbowman]

@lightworkhome Keep that PM2.5 down!

[Lightwork Home Health @lightworkhome]

We believe creating a healthy home is one of the highest-leverage things you can do for your health.

That’s why @thegarybrecka — human biologist, health expert, and host of The Ultimate Human Podcast — trusted Lightwork to assess his home.