Can You Detox Endocrine Disruptors from Your Body? Dr Shanna Swan Explains
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It depends entirely on the chemical
Water soluble chemicals: the good news
This was one of the most searched questions in the Huberman Lab audience session, and Dr Swan's answer is one of the most useful and genuinely clarifying 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 answer, as Dr Swan explained directly, depends entirely on which chemical you are asking about.
It Depends Entirely on the Chemical
The key variable is whether a chemical is water soluble or fat soluble. This single characteristic determines almost everything about how long it stays in the body and what, if anything, can be done to remove it faster.
Water Soluble Chemicals: The Good News
Phthalates and bisphenols, including BPA and its replacements BPS and BPF, are water soluble. As Dr Swan explained in her Huberman Lab 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 is more actionable than most people realise. Phthalates and bisphenols are among the most widespread and well-studied endocrine disruptors, found in plastic food packaging, personal care products, synthetic fragrances and food can linings. But because they clear the body quickly, reducing your ongoing exposure has a rapid and measurable effect on the levels present in your body.
Studies that have asked participants to switch to fresh, unpackaged food for just a few days have found dramatic reductions in urinary phthalate and bisphenol levels within 72 hours. The body is remarkably efficient at clearing these compounds once the source of exposure is reduced.
The practical implication is that the choices you make about food packaging, personal care products and cookware have an almost immediate effect on your body burden of these specific chemicals. Every meal eaten from glass instead of plastic, every fragrance-free product chosen, reduces your ongoing load within hours rather than weeks.
Fat Soluble Chemicals: The Harder Reality
PFAS, persistent organic pollutants such as older PCBs and dioxins, and many pesticide residues are fat soluble. Rather than being excreted in urine, they are stored in fatty tissue and accumulate over time. The body has no efficient mechanism for clearing them.
This is precisely why PFAS are called forever chemicals. Once in the body they remain for years, with half-lives measured in years to decades depending on the specific compound. The half-life of PFOS, one of the most studied PFAS compounds, in the human body is estimated at around five years, meaning it takes five years for the body to eliminate half of whatever amount is present.
There is currently no proven, safe method to meaningfully accelerate the elimination of fat soluble endocrine disruptors from the human body. Some research has investigated whether activated charcoal, cholestyramine, or sauna-induced sweating can reduce PFAS levels, but the evidence is limited and no intervention has been validated in clinical trials to a degree that warrants specific recommendation.
The honest and most useful thing to know is this: for fat soluble chemicals, the strategy is prevention and reduction of ongoing exposure, not detoxification after the fact. Reducing your current intake of PFAS from cookware, food packaging, water and personal care products will lower the rate at which your body burden increases, even if it cannot reverse what has already accumulated.
Does Sweating Help?
The Huberman Lab audience specifically asked whether sweating, through exercise or sauna, helps remove endocrine disruptors. Dr Swan addressed this and the honest answer is nuanced.
Some studies have detected PFAS, heavy metals and certain pesticide residues in sweat, suggesting that sweating may contribute a small amount to their elimination. However the quantities involved are generally much smaller than what is eliminated through urine and faeces, and sweat is not a primary excretion route for most of these compounds.
Exercise and sauna use have significant health benefits that are well established independently of any detoxification effect, and there is no reason to avoid them on this basis. But it would be an overstatement to recommend them specifically as a strategy for removing endocrine disruptors from the body. The evidence for that specific purpose is not yet strong enough to support that claim.
The practical summary:
For 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, avoid canned food.
For PFAS and persistent pesticides: prevention is the primary strategy. Reduce ongoing exposure through water filtration, PFAS free cookware and organic produce. There is no proven safe method to meaningfully accelerate elimination of what is already in the body.
Related reading: our Home and Living page covers practical ways to reduce PFAS exposure at home, 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