Can You Detox Endocrine Disruptors from Your Body? Dr Shanna Swan Explains
This was one of the most searched questions in the Huberman Lab audience session with Dr Shanna Swan, one of the world's leading researchers on chemical exposure and reproductive health. Her answer is one of the most practically useful things she said in the entire interview.
The question was whether endocrine disruptors can be detoxed from the body and what the quickest ways are. The honest answer, as Dr Swan explained, depends entirely on which chemical you are asking about. And understanding why makes all the difference.
It Depends Entirely on the Chemical
The key question is whether a chemical mixes with water or dissolves in fat. This single characteristic determines almost everything about how long it stays in your body and what, if anything, you can do to get it out faster.
Think of it like this. If you spill water-based paint on your hands you can wash it off quickly. If you spill oil-based paint, water alone will not shift it and it takes much longer to remove. Chemicals in your body work on a similar principle. The water-based ones your kidneys can filter out and send to the bathroom. The fat-based ones go straight to your fatty tissue and stay there.
The Good News: Chemicals That Clear Quickly
Phthalates and bisphenols including BPA, BPS and BPF mix with water. As Dr Swan explained directly in her interview, these chemicals leave the body in a matter of hours through urine. You do not need to do anything special. You just need to stop taking them in.
This is genuinely good news and more actionable than most people realise. Phthalates are the chemicals that make plastic flexible. They are found in soft plastic food packaging, personal care products and synthetic fragrances. Bisphenols are the chemicals used to line food and drink cans and coat thermal paper receipts. Both are among the most well-studied endocrine disruptors with clear links to hormonal disruption.
But because they clear the body so quickly, reducing your ongoing exposure has a rapid and measurable effect. Studies that have asked participants to switch to fresh unpackaged food for just a few days have found dramatic reductions in phthalate and bisphenol levels in urine within 72 hours. Your body is remarkably efficient at clearing these chemicals once the source of exposure is reduced.
In practical terms this means every meal eaten from glass instead of plastic, every fragrance-free product chosen, every receipt declined, reduces your levels within hours rather than months. The choices you make today show up in your body chemistry by tomorrow.
The Harder Reality: Chemicals That Stay
PFAS, persistent pesticides and certain older industrial chemicals dissolve in fat rather than water. Instead of being filtered by the kidneys and passed out in urine, they are stored in fatty tissue and build up over time. The body has no efficient way to remove them.
This is why PFAS are called forever chemicals. Once inside the body, they stay. PFOS, one of the most studied PFAS compounds, has a half-life in humans of around five years. That means it takes five years just to eliminate half of whatever is currently present. Not all of it. Half of it.
There is currently no proven, safe method to meaningfully speed up the removal of fat-soluble endocrine disruptors from the body. Some research has looked at whether certain supplements or sauna use might help, but nothing has been validated in clinical trials to a degree that warrants a clear recommendation.
The most honest and useful thing to understand is this: for fat-soluble chemicals, the strategy is prevention, not cure. Reducing your current exposure to PFAS through water filtration, switching to non-stick-free cookware, avoiding PFAS-coated food packaging, and choosing organic produce will slow the rate at which your body burden grows. It cannot undo what has already accumulated, but it changes the direction of travel.
Does Sweating Help?
The Huberman Lab audience asked this specifically. The honest answer is: a little, but not as much as is often claimed.
Some studies have detected traces of PFAS, heavy metals and certain pesticides in sweat, which suggests sweating does contribute something to their elimination. But the quantities are generally much smaller than what leaves through urine and the digestive system. Sweat is not a primary excretion route for most of these chemicals.
Exercise and sauna use have real, well-evidenced health benefits that stand on their own. There is no reason to avoid them. But it would be an overstatement to recommend them specifically as a detox strategy for endocrine disruptors. The evidence for that particular purpose is not yet strong enough.
The practical summary:
Phthalates and bisphenols: stop taking them in and your body clears them within hours. Reduce plastic food packaging, switch to fragrance-free personal care products, decline paper receipts.
PFAS and persistent pesticides: prevention is the only reliable strategy. Filter your drinking water, replace non-stick cookware, choose organic for the highest-pesticide foods. There is no proven method to meaningfully accelerate the removal of what is already in the body.
Related reading: our Home and Living page covers practical ways to reduce PFAS exposure, our Beauty and Skincare page covers phthalates in personal care products, and the Dr Shanna Swan Expert Talk covers the full interview this article draws from.
Sources: Dr Shanna Swan, Huberman Lab interview | Genuis et al., ISRN Toxicology (2011): excretion of PFAS through sweat | Trudel et al., Environmental Science and Technology (2008): PFAS half-lives in humans | Rudel et al., Environmental Health Perspectives (2011): dietary phthalate and bisphenol reduction study
WANT THE FULL PICTURE?
Dr Leonardo Trasande covers how endocrine disrupting chemicals accumulate in the body and what individuals can meaningfully do to reduce their exposure in his TEDx talk.
Watch the full Dr Leonardo Trasande talk →