Detox Your Home in 5 Steps: A Physician's Guide

Dr. Meg Christensen is the founder of Interior Medicine, a resource for navigating healthier home products and household exposures. She brings a background in medicine, biochemistry, epidemiology, and clinical research to the often polarizing conversation around non-toxic living — with transparency, nuance, and balance.

Published December 2025 | Updated February 2026

If you're just getting started making your home healthier—whether you've recently gotten a health diagnosis, are pregnant, became a new parent, or just learned about concerning exposures in the home—this guide is for you. With so much conflicting information out there, it can be so hard to know what actually matters. It's easy to focus energy on lower-priority items while missing critical exposures that affect you daily.

By focusing on these five areas first, you'll reduce your daily exposure to toxins at home in the smartest, most effective way.

Why Start With These Five

I prioritized these five upgrades based on a framework I use to evaluate any product's potential to impact your health:

The exposure pathway:

Does it leave the product? (Not everything does—some chemicals stay locked in permanently.)
If it leaves the product, does it enter your body? (We're porous, but not everything gets in.)
If it enters your body, does it stay in your body, and how much? (Some things pass through quickly, others accumulate.)
Is it harmful at the levels that stay? (Sometimes a small amount really is OK, but the relationship isn't always straightforward—some chemicals cause harm even in tiny amounts.)

The exposure intensity:

How often are you exposed? (Every day vs. once a year)
How close is it to your body? (Pressed against your face vs. across the room)
What's the duration? (8 hours nightly vs. 30 seconds)

Not everyone responds the same way to chemical exposures. Children, pregnant people, and those with certain health conditions are often more vulnerable. This is why I prioritize reducing exposures that affect everyone in the household, especially during the life stages when bodies are most susceptible—childhood development, pregnancy, and the nightly recovery period when your body repairs itself.

Not every chemical is an emergency and not every exposure matters equally. This ranking focuses on the upgrades with the clearest harm pathway and the highest exposure intensity. Here we go!

1. Clean Your Indoor Air (Start Here)

The transformation: You'll reduce your exposure to particulate matter linked to asthma and heart disease, VOCs that pass directly into your bloodstream, and potentially life-threatening radon gas.

Why this ranks first: You take around 20,000 breaths daily. Indoor air is typically 2-5 times more polluted than outdoor air, and you can’t necessarily see it or smell it when it’s dirty. And, if you’re like most Americans, even if you’re active outside, you likely still spend more than 90% of your time indoors breathing that air. Indoor air is worse than outdoor air because indoor air pollution gets trapped by walls, and contains VOCs from furniture, cleaning products, and building materials, plus particulate matter (PM) from cooking, allergens, and outdoor pollution that makes its way inside. Larger particles can irritate your throat and lungs, and VOCs and ultra-fine particles pass directly through your lungs into your bloodstream, which is how they cause body-wide effects, including certain cancers.

What to do first (free):

Minimize use of scented products: this doesn’t just mean candles and incense, but also synthetically fragranced hand soaps, garbage bags, and air fresheners. These add harmful VOCs to the air, and avoiding them instantly improves your air quality.
Open windows: open your windows daily to let polluted air out. Crack the windows while you’re sleeping at night to let carbon dioxide escape. CO2 builds up quickly, and high levels can disrupt sleep.
Use the exhaust fan every time you cook: this helps remove harmful particulate matter (PM 2.5) and VOCs. If you’re skeptical about how much regular cooking worsens indoor air, watch how fast levels rise in my house in my short video here.
Contact your county or state about a free radon test kit: Radon is the second leading cause of lung cancer in the US, and since it’s odorless, tasteless and invisible, you have to test to know it’s there. It comes from the bedrock under 7 million homes in the US. Testing can literally save your life, and some cities and states offer them for free. You can check here.

Next-level upgrades:

Air purifier with true HEPA filtration for your bedroom: a true HEPA filter captures harmful PM 2.5 very effectively, during the 8 hours per night your body is healing and recovering. PM 2.5 is linked with asthma and heart problems, and more and more research is coming out showing effects on immune function and oxidative stress. An air purifier is a super easy way to reduce levels and protect your long-term health.

Add activated carbon or zeolite filtration: VOCs, gasses, and odors are too small to be captured by a HEPA filter, which is where activated carbon or zeolite comes into play. It is able to adsorb VOCs, removing them from your air. For effective removal, you need a substantial amount of carbon, and some machines even have 15 pounds and are able to remove formaldehyde. This adds an extra level of protection beyond PM 2.5. Prioritize the bedroom and consider one for your main living area, too.
Long-term radon monitoring: use a 90-day radon test kit. Short term (2-7 day) kits are really good for understanding if there is a current radon problem, however, radon fluctuates a lot week to week and throughout the year. A 90-day kit will give you a much more accurate picture of your radon situation, and they’re still quite affordable.

Indoor air quality monitor with continuous radon monitoring: use an indoor air quality monitor in your main living space (kitchen or living room), and consider separate ones that track at least CO2 in your office and bedroom. They help you see the invisible and understand whether you should open the windows while cooking to release high PM2.5, or track VOCs from new building materials or furniture, indicating when to turn up your air purifier. CO2 builds up surprisingly fast in rooms with closed doors and can make you sleepy when trying to focus on work, and if levels get very high, wake you up at night.

2. Purify Your Tap Water

The transformation: purifying your tap water eliminates daily exposure to PFAS, pharmaceuticals, pesticides (and potentially lead) from every cup of water, coffee, pot of pasta, and bath time.

Why this matters: You use water to cook, bathe, and for drinking water throughout the day. Since you consume 11-16 cups of water per day through both food and drinks, it’s a huge opportunity to remove contaminants that would otherwise go straight into your body. Your skin is great at keeping most contaminants out while bathing or showering in water, even lead, though PFAS are an emerging area of concern. I’ve heard lots of skepticism about the need to filter tap water — “cities do a good enough job cleaning it up; I drink it and I’m fine!” but even major governmental organizations recognize it’s not as clean as it should be. A big study by USGS from 2023 showed that PFAS were detected 45% of tested US drinking water samples. And, lead is still a huge issue in many cities, not just Flint. Limits on contaminants in municipal water supplies are not set with health standards as the sole focus. Limits also take into account the difficulty and expense of filtration technology— AKA, how much taxpayers are willing to pay.

What to do first (free):

Find out what is in your water: look up your city’s water data using your zip code on the Environmental Working Groups’s website.
Free city-supplied testing and filters: many cities offer free water testing kits and filters! This is more common in places with older homes or with known water supply issues, but it’s absolutely worth googling or calling your water supplier about this.

Next-level upgrades:

Certified countertop water filter: certified countertop water filters, like pitchers or gravity dispensers, can remove pharmaceuticals, PFAS, VOCs, pesticides, and other contaminants from water. They’re less expensive than under-sink 3-stage setups or reverse osmosis and still effective.
Basic shower filter: a basic shower filter is such an easy way to reduce your daily exposure to chemicals and some are very inexpensive while still being certified. They screw in to your existing water spout quickly and easily, and remove chlorine from your water, which can help with dry, frizzy hair, asthma, eczema, and other dry skin conditions. Some are even certified to remove PFAS and microplastics, so they offer health benefits in addition to aesthetic ones.

Under-sink water filter with multi-stage filtration: three-stage filtration removes more than a countertop filter does, and almost as many contaminants as a reverse osmosis unit does. These are a good, comprehensive way to reduce daily water contaminant exposures for not just your drinking water, but cooking water and hand-washing water, too.
Bath filter: choose a shower filter that’s certified to remove PFAS and microplastics in addition to chlorine and consider a bath filter set-up, too. If you have little ones that take baths or if you’re soaking in the tub for a long time (like I do), it’s nice to know that the water is free of irritating chlorine, PFAS and more.

Under-sink reverse osmosis with remineralization: reverse osmosis is the gold standard for water filtration, and removes nearly every contaminant. Prioritize your kitchen, since you use that water for both drinking and cooking, but consider one for under your bathroom sinks, too.
Whole-house filtration: I haven’t rated these like I have other water filter types yet because this generally requires a plumber and what’s available in your city— beyond my scope. But, I do trust Aquasana for their consistent transparency, NSF certified testing, and results sharing.

3. Reduce Toxic Dust in Your Home (Then Replace What Creates It)

The transformation: You'll significantly reduce your exposure to 800+ chemicals from standard furniture, including flame retardants that disrupt hormones and compounds linked to thyroid dysfunction.

Why this matters: Dust isn't just little bits of dirt and dead skin cells, like I thought it was growing up. It's actually one of the major ways we’re exposed to chemicals. Harvard has done a handful of studies on dust, with unsettling results showing that people are exposed to 800+ different chemicals in rooms furnished with standard furniture, and that the chemical mixture blocks sex and thyroid hormones. We’ve known for years that cats get hyperthyroidism because of the flame retardants that fall out of standard foam, and we’re learning now that we’re vulnerable to these chemicals and others, too. Additives fall out of foam and fabric over time, they don’t stay locked in. Adults actually ingest around 50mg of dust daily, and kids 100mg, from hand-to-mouth exposure. So, cleaning up dust, as much of a chore as it is, is a super important way to improve your health.

What to do first (free):

Take your shoes off at the door: this reduces pesticides, lead dust, and outdoor contaminants so you’re not adding anything to the indoor burden
Damp dust weekly: a wet cloth traps particles instead of redistributing them
Vacuum your couch and mattress surfaces weekly: it sounds a little silly, but flame retardants and other chemicals are released from foam, and vacuuming these up from the source is a great way to reduce levels before they spread into other areas of your home.
Minimize clutter: fewer surfaces means less dust accumulation and easier cleaning

Next-level upgrades:

A substantial outdoor mat, an indoor boot tray, and dedicated house slippers: remove as much debris from your shoes as possible before walking in, store your shoes on a boot tray made without styrene rubber that catches any extra, and wear shoes or slippers that are only for indoor use.

Choose an air purifier with a large pre-filter to capture dust: air purifiers won’t eliminate dust, but they are capable of reducing the amount that stays in the air and settles on surfaces. An air purifier with a large washable pre-filter is ideal, because it’ll capture a large amount of dust that you can easily clean off and re-use.
Use a HEPA-rated filter vacuum: most vacuums re-release dust and ultra-fine particles back into the air. A HEPA vacuum with allergy seal permanently traps them inside, so your hard work isn’t undone.
Consider a non-toxic or organic mattress topper: if you have a little more room in your budget, an organic mattress topper is a good way to reduce friction on a foam mattress underneath and is more affordable than replacing the whole thing.

Replace furniture sources of toxic dust: this is part of the long-term journey. When the time is right, start by replacing the large foam items that may contains flame retardants as well as other foam additives like stannous octoate. Swap for a non-toxic couch and mattress first, followed by other soft goods like throw pillows, rugs, and curtains, then work your way toward solid furniture. At the very end of this guide, I have a list of how to prioritize the rest of your home after taking care of the top five.

4. Upgrade Your Pillow

The transformation: Your face will contact certified organic materials for 8 hours nightly instead of memory foam filled with chemical additives and wrapped in heat-trapping polyester.

Why this matters: Your pillow is the object you're in closest contact with— it’s pressed against your face for a third of your life, during the hours your body is recovering and healing itself (your body repairs your DNA all the time, but even more intensely while you sleep.) Pillows are also more affordable than mattresses, and since they wear out more quickly, it’s likely that you’re due for replacement anyway. Memory foam pillows are full of chemical additives, often including flame retardants, and wrapped in heat-trapping polyester (a plastic fabric.) Putting something organic under your face that won’t expose you to unnecessary chemicals is an easy, great way to start detoxing your bedroom.

What to do first (free):

Wash your existing pillow: this will remove dust mites, allergens, bacteria, some of the fabric-processing chemicals from the encasement, sweat, and oil, improving your health immediately. If you have a memory foam pillow, you can’t wash it in the washing machine, but you can remove the encasement and wash that.

Next-level upgrades:

OEKO-TEX certified polyester pillow: polyester isn’t ideal, but it is very affordable, and when it has OEKO-TEX certification, it is tested to be healthier than standard pillows with fewer chemical additives remaining in the final product.

Certified organic pillow: there are so many great truly organic and natural pillows, including ones made with organic latex, kapok (a fluffy fiber), organic cotton, and wool. Choose one that supports your sleeping position, so your neck and spine stay happy and aligned all night, another important part of your health.

Complete bedroom detox: use the pillow as a jump-off point for detoxing the rest of your bedroom, too. When budget is an issue, a pillow is a high-impact, affordable way to start, but of course if you can make the investment in an organic mattress, bedding, decor, and furniture, your bedroom is the first place to start. Again, it’s the room you spend the most time in, and the room you’re doing your nightly recovery in.

5. Replace Non-Stick Cookware

The transformation: You'll eliminate daily PFAS exposure from degrading Teflon, or unknown additives from questionable “ceramic” coatings that leach directly into your food.

Why this matters: Ingestion (eating and drinking) is one of the three primary routes of exposure. Cookware comes into direct contact with your food, meaning whatever is in it makes it into your body when you eat. Cookware is actually more important than silverware, plates, and cooking prep tools because heat, long simmering times, and acidity are involved. Heat, acid, time, and abrasion, are the main ways that harmful chemicals are extracted out of cookware. Non-stick coatings with PFAS, modern “non-toxic ceramic” non-toxic coatings, reactive metals, and questionable glazes can leach into your food daily.

What to do first (free):

Stop using scratched or damaged nonstick immediately: a non-stick pan showing signs of wear means the coating is degrading and making its way into your food and body.
Use lower heat and avoid scratching the surface: if you have classic non-stick pans, this reduces the degradation of the coating.
Turn on your exhaust fan: if you’re using a non-stick pan coated in Teflon or other PFAS, these can be volatilized into the air, so removing that air with your exhaust fan or an open window every time you cook will immediately help.

Next-level upgrades:

One all-purpose healthy pan: a totally non-toxic, deeper pan that’s oven safe can be used for sautéing, simmering, and baking. Uncoated titanium or cast-iron is perfect for this. You can read more about exactly what to look for to avoid toxic coatings (and what “non-toxic ceramic” really is) in my detailed, free Coatings Guide.

Full non-toxic cookware set: avoiding PFAS in the classic non-stick cookware (still being sold today!) and lead that contaminates some cheap, imported metal cookware, are no-brainer ways to reduce daily toxic exposures. A full set of pots and pans ensures that no matter what you’re cooking, you’re safe. Titanium, cast iron, stainless steel, and nickel-free stainless steel (if you have an allergy) are the healthiest options, and there are some less toxic versions of ceramic non-stick as well. You can read all about it in my Metal Guide and Coatings Guide, compare options side by side on my Non-Toxic Pots and Pans page (paywalled).

Complete kitchen detox: eliminating toxic cookware from your kitchen is first, but the kitchen overall is the second most important room to focus on after your bedroom because you eat, drink, and breathe so much of it in. Replace coffee makers, tea set-ups, and mugs next, since they make and hold daily hot beverages. Switch to cleaner bakeware after that, then your dishes, and your small appliances last.

Pots and Pans, Bakeware, and Dishes are in the Look Inside section of my website, which is $4/month for access. You can use code PEEK for your first month free. You can sign up by clicking on any Look Inside page, and you can cancel anytime.

What Didn’t Make the Top Five and Why

All of the following are great places to start if they speak to you and you want to do it! There is no perfect path, but here’s a little bit about my thinking that went into why these didn’t make the top five:

Circadian Lighting

On my original Top Five list, circadian lighting didn’t make it on this guide, because it was replaced with cookware. Sure, I could have changed this to Top Six, but I wanted to keep things tight. I thought about this change a lot, but ultimately, I decided that non-toxic cookware is a higher priority. That’s because, while we have some information about how circadian lighting affects us, it’s still a relatively new field and the research on PFAS is overwhelming, urgent, and definitive. There is no doubt they are bad for us, in normal levels of exposures in every home, especially through non-stick surfaces like pots and pans.

So, for now, safer PFAS-free cookware wins. I still think it’s worth improving your circadian rhythm -friendly lighting methods, and dive into this at length on my Light Quality page.

Mattress and Couch

I often see mattresses and couches recommended as the best place to start when creating a healthier home because they are large objects, conventional foam is toxic, and you spend a lot of time on them. I understand this reasoning, and so did include them in the top five, sort of— as extra steps after taking care of your pillow and after reducing household dust load. I did this for accessibility reasons, and because pillows and dust are slightly higher impact places to start. While your body is very close to your mattress, your face is even closer to your pillow and represents all three routes of exposure directly on it (ingestion, inhalation, and absorption.) Problematic dust comes from many sources in your home, including electronics, personal care and cleaning products, plastics shedding from rugs, abrasion of coatings on tables and chairs— in short, not just the couch and mattress. Many people cannot buy a truly organic couch and mattress right away, but if you can, I do think these are great places to prioritize, too.

Kitchen Plastic

It is absolutely a good idea to swap out plastic food storage and water bottles, and making the move to a healthier and lower-plastic kitchen overall is also another extra step I recommend after taking care of your cookware. That’s because cookware is in contact with your food in conjunction with heat, acid, and time, moreso than anything else in your kitchen (maybe with the exception of plastic storage tupperware for hot leftovers— wait until it’s cooled down to store it.) This makes cookware the highest impact focus to work on first. Additionally, cookware’s toxicity is not only plastic-based coatings or PFAS, it can also contain heavy metals, or allergens like nickel. Finally, it’s hard to say all plastic in the kitchen is all bad — there are shades of grey here. For example, all water filter membranes are made with plastic, but they also literally remove 99%+ of microplastics from tap water (read my discussion of this at the bottom of my Under-Sink Water Filters page.) The plastic components of a food processor are in contact with cold food, pretty infrequently, and there are no home-use food processors that are completely plastic free at a reasonable price point (most are for commercial use and $1,000+). So yes, make the move to glass food storage and move away from plastic whenever it is reasonable to do so! But, this is why cookware won for the Top Five.

After the Top Five: Your Personalized Priority Framework

Once you've addressed these five areas, apply this same exposure thinking to rank everything else:

For any product, ask:

Does it actually leave the product and enter your body? (Many chemicals stay locked in)
If it gets in, does it stay, and how much accumulates? (Your body efficiently processes some things, stores others)
At those levels, is it genuinely harmful? (Dose and duration matter)
Do the benefits outweigh the risks? (This will be personal to you, and sometimes they do)
How intense is your exposure? (Daily face contact vs. occasional brief touch)

Examples in practice:

Formaldehyde glue in plywood matters if it off-gasses into air you breathe daily. A Prop 65 wood dust warning (protecting factory workers) doesn't apply to your finished furniture at home.
Lead doesn't absorb through skin during a bath, but it absolutely matters in drinking water you ingest daily.
A lamp cord you touch once a year ranks far below a tabletop you rest your arms on during every meal.

I hope this framework clarifies that not everything toxic requires immediate action. Give yourself lots of grace and time!