No: once fixed in your tissues, cadmium is not really "eliminated", its renal half-life is counted in decades. What remains in your hands is exposure: what comes in, day after day. So I will start by telling you what does not work, because that is the condition for seeing things clearly.
In February 2026, ANSES published a report that landed like a silent bombshell: 47.6% of French adults aged 18 to 60 exceed the critical cadmium exposure threshold, and for 98% of non-smokers, the source is neither the factory nor the cigarette. It is the plate. Naturally, the first reaction is to look for a way to get rid of it. And here, I have to be honest with you: the cadmium already settled in your kidneys, liver and bones is very hard to reverse. No seaweed, no supplement, no "detox course" will make it leave your tissues like wringing out a sponge. Anyone who promises you otherwise is selling you a dream, and often without a single source.
What you can act on, however, is your exposure: where cadmium comes from, which foods provide the most, and how to vary so as not to always draw from the same sources. It is a change of target: we do not chase the cadmium already fixed, we look at what comes in.
My name is Eric Viard. I am an ISTOM engineer, I founded Biovie in 2007, and I have eaten a plant-based diet for 33 years, so I have lived with food contamination since the lecture hall. This article is the rigorous guide I would have liked to read: what is demonstrated, what is not, and what you can put on your chopping board from tomorrow morning, without panicking.
Why cadmium is so hard to eliminate once fixed
This is the starting point, and the one everyone glosses over. When you absorb cadmium, your body eliminates only a tiny fraction each day. The rest accumulates, mainly in the kidneys. Its biological half-life is estimated at between 10 and 20 years in kidney tissue, sometimes more, up to 30 years according to recent work (Satarug et al., 2017). In concrete terms: a microgram absorbed at 30 is still there, by half, when you are 45 or 50. Your body keeps a counter, and it does not reset to zero.
Why this persistence? Because of a protein that was supposed to protect you: metallothionein. When cadmium enters a cell, the body captures it in this protein to limit its immediate toxicity. Good news in the short term, except that this cadmium-metallothionein complex is then stored in the kidney, where it stays trapped for years. The cage that protects becomes the cage that holds. This is the physiological reason why you cannot "chase" cadmium out of an organ: it is not in free circulation, it is sequestered.
And it is not trivial. The kidney holds about a third of the body burden of cadmium, and data on nephrotoxicity at low doses keep accumulating (Satarug et al., 2020). IARC has classified cadmium as a proven human carcinogen (Group 1) since 1993. EFSA has set a tolerable weekly intake of 2.5 µg/kg of body weight (EFSA, 2011), and the problem raised by ANSES is precisely that a large part of the population exceeds it.
The conclusion is not discouraging, it is strategic: since removing cadmium that is already fixed is not realistic, everything hinges on exposure. What comes in today weighs on your counter for decades to come.
Where does cadmium on the plate come from?
Reducing what you absorb means knowing where it comes from. Cadmium is not a distant industrial pollutant: it arrives through everyday food, and for a very concrete agronomic reason.
Soil and phosphate fertilisers
Cadmium is naturally present in the earth's crust, but its input to agricultural soils comes largely from phosphate fertilisers, whose source rocks contain varying levels depending on the deposit. Plants then absorb it through the roots, without distinguishing it from useful minerals: cadmium partly uses the same transporters as zinc and iron.
October 2026 update: the Ministry of Agriculture announced, on 2 October 2026, a timetable for lowering the cadmium levels allowed in fertilisers: 60 mg/kg on 1 January 2027, 40 mg/kg in 2028, then 20 mg/kg in 2030, compared with 90 mg/kg today. An order published the same day also sets, for several categories of fertilisers, a reference annual input of 3 grams of cadmium per hectare, from 2027. The draft put out for consultation in spring aimed at this same 20 mg/kg threshold only for 2038: the timetable is therefore clearly accelerated, and it follows ANSES's recommendations. In concrete terms, for you, nothing changes tomorrow morning: the cadmium already in the soil does not disappear overnight, and the effects on the plate will be measured over several years. It is nonetheless the tap being tightened at the source. (France Info, 2 October 2026)
The main sources on the French plate
- Cereals and bread come first, not because they concentrate the most, but because we eat them every day. It is frequency that makes the dose.
- Potatoes, for the same reason.
- Molluscs and offal, which accumulate the metal: the liver and kidneys are the storage organs, in animals as in us.
- Certain hyperaccumulating plants - sunflower, flax, brown rice, spinach - best eaten varied rather than as an exclusive daily staple.
- Pasta, as confirmed by a 60 Millions de Consommateurs study published at the end of August 2026: 80 % of the products tested contained cadmium, with no exceedance of the European regulatory threshold (0.18 mg/kg for durum wheat) - and wholemeal pasta, though perceived as healthier, shows the highest levels, cadmium being concentrated in the bran of the grain.
Dark chocolate deserves a nuance: it is regularly singled out, yet the quantities consumed rarely make it a major source. Two squares a day do not weigh the same as a daily intake of bread and potatoes.
Tobacco, the most underestimated route
For people who smoke, the cigarette is by far the leading source of exposure : the tobacco plant is itself a hyperaccumulator, and lung absorption is far more efficient than digestive absorption. No dietary protocol compensates for this route of entry - this is something to know before optimising the rest.
Chelation: a medical procedure, not a course
Before going further, I need to clarify a word you read everywhere, and this misunderstanding is at the root of most of the dubious promises you read online.
Systemic chelation: it is medical, and it is not our subject
Chelation, in the strict medical sense, consists of administering a molecule (EDTA, DMSA, DMPS) that binds to the metal already present in the blood and tissues to evacuate it in the urine. It is a therapeutic procedure, reserved for acute poisoning, carried out in hospital under medical supervision. It is neither trivial nor risk-free: badly managed, chelation can unbalance essential minerals and tire the kidneys. It is not Biovie's field, and it must never be self-medication. If you suspect real poisoning, it is a medical consultation, not a course of supplements.
