Anses Calls for Stricter EU Classification of Lithium as Endocrine Disruptor and Aquatic Toxin Amidst Surging Global Demand.

The French Agency for Food, Environmental and Occupational Health & Safety (Anses) has issued a critical advisory, dated April 16, 2026, urging the European Union to implement more stringent classifications for lithium and its salts. Citing evidence that lithium acts as an endocrine disruptor with specific effects on the human thyroid and poses chronic toxicity risks to aquatic organisms, Anses’s recommendations underscore the growing concerns surrounding the widespread and increasing use of this vital element. This comes at a time when global demand for lithium is skyrocketing, primarily driven by the electric vehicle (EV) and portable electronics industries, prompting an urgent need for enhanced regulatory oversight to mitigate potential health and environmental hazards.

The Lithium Rush: A Critical Element for the Green Transition

Lithium, often referred to as "white gold," has become an indispensable component in modern technology and a linchpin in the global transition towards a greener economy. Its exceptional electrochemical properties make it ideal for use in rechargeable lithium-ion batteries, which power everything from smartphones and laptops to electric cars and large-scale energy storage systems for renewable energy grids. Beyond batteries, lithium and its compounds (such as carbonate, chloride, and hydroxide) find applications in various industrial sectors, including the manufacturing of specialized glass and ceramics, as well as in certain cosmetic products and, notably, as a medication for specific psychiatric conditions.

The accelerating adoption of electric vehicles worldwide, coupled with ambitious decarbonization targets set by governments, has fueled an unprecedented surge in lithium demand. Projections indicate that global lithium consumption could increase by several hundred percent by 2040, creating immense pressure on supply chains and spurring a global scramble for new extraction sites. This burgeoning demand has led to a renewed focus on securing domestic supplies, with numerous exploration and exploitation projects emerging across Europe, including in France, aiming to establish regional autonomy in critical raw materials. It is against this backdrop of rapid industrial expansion and strategic importance that Anses’s comprehensive review was conducted, assessing the potential risks associated with lithium’s life cycle – from extraction and processing to manufacturing and disposal.

Anses’s Alarming Findings: Dual Threats to Health and Environment

Anses’s assessment highlights a dual threat posed by lithium: significant risks to human health and severe impacts on aquatic ecosystems. For human health, the agency confirmed that lithium has "effects on the thyroid, indicative of an endocrine-disrupting effect." Endocrine disruptors are chemicals that can interfere with the body’s hormone system, producing adverse developmental, reproductive, neurological, and immune effects. The thyroid gland plays a crucial role in metabolism, growth, and development, and its disruption can lead to a range of health issues, including metabolic disorders, developmental problems, and cognitive impairments. This finding builds upon earlier concerns regarding lithium’s reproductive toxicity. As far back as December 2019, Anses had formally proposed to the European Chemicals Agency (ECHA) that three specific lithium salts be classified as toxic for fetal development, a classification that acknowledges their potential to harm an unborn child. This earlier proposal, which is still undergoing review by ECHA and the European Commission, indicates a consistent pattern of concern from the French agency regarding lithium’s biological impacts.

Environmentally, Anses found that lithium exhibits "toxic effects on various aquatic organisms, including fish, invertebrates, algae, and amphibians, even during chronic exposures." This broad impact across different trophic levels of aquatic ecosystems is particularly concerning. Lithium can enter aquatic environments through various pathways, including wastewater discharges from mining and industrial processes, runoff from agricultural lands where lithium-containing materials might be used, and leakage from improperly disposed batteries. Once in water bodies, lithium can accumulate in organisms, disrupting their physiological processes and potentially leading to population declines, altered community structures, and wider ecosystem imbalances. The agency’s emphasis on "chronic exposures" suggests that even low-level, prolonged presence of lithium in water can have detrimental long-term effects, making it a persistent environmental pollutant.

Call for Stronger EU Regulatory Action: The CLP Regulation

In response to these findings, Anses has issued several key recommendations, with the most significant being a call for the European Union to classify lithium and its salts under the Classification, Labelling and Packaging (CLP) Regulation. Specifically, Anses advocates for their classification as "endocrine disruptors for human health" and "chronically toxic for aquatic organisms."

The CLP Regulation (Regulation (EC) No 1272/2008) is a cornerstone of EU chemicals legislation, ensuring that the hazards of chemicals are clearly communicated to workers and consumers in the European Union through standardized classification and labelling. A substance’s classification under CLP dictates how it must be labelled, packaged, and often how it can be used, stored, and disposed of. It forms the basis for numerous other EU chemical regulations, including REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals).

If Anses’s recommendations are adopted by the European Commission, it would have profound implications. Products containing lithium would be required to carry specific hazard pictograms and warning statements on their labels, alerting users and handlers to the risks of endocrine disruption and aquatic toxicity. This enhanced labelling would increase awareness among consumers and industrial users, potentially leading to more cautious handling and disposal practices. Furthermore, such a classification would trigger additional regulatory scrutiny, potentially leading to restrictions on certain uses, requirements for substitution with safer alternatives where possible, and stricter emission limits for industrial facilities handling lithium. It would also empower national authorities to implement more targeted risk management measures.

Anses’s Broader Recommendations for Risk Management

Beyond the CLP classification, Anses has put forward a comprehensive set of recommendations aimed at bolstering risk prevention and data collection:

1. Enhanced Data Collection: The agency stresses the urgent need for "measures to collect the necessary information for the prevention of corresponding potential risks." This includes collecting more detailed data on human exposure levels (e.g., through diet, air, water, and occupational settings) and environmental concentrations across different ecosystems. Such data is critical for refining risk assessments, identifying vulnerable populations, and developing effective mitigation strategies.
2. Industrial Responsibility: Anses explicitly calls upon industrial stakeholders to "take into account the reprotoxic and endocrine-disrupting effects of lithium and its salts for human health, as well as their toxic effects on environmental species" in their regulatory risk assessments. This applies particularly within the framework of the regulation concerning batteries and battery waste. This recommendation places a direct onus on manufacturers of lithium-containing products, from battery producers to cosmetic companies, to proactively integrate these health and environmental concerns into their product design, manufacturing processes, and end-of-life management strategies. This could involve exploring less hazardous alternatives, implementing stricter emission controls, and investing in advanced recycling technologies to minimize environmental release.
3. Public Access to Exposure Data: The agency also demands that "any human and environmental exposure data" be "made available to public authorities." This transparency is crucial for public health surveillance, environmental monitoring, and for enabling informed decision-making by regulators. It would facilitate a more comprehensive understanding of real-world exposure scenarios and their potential impacts. Anses itself has developed specific toxicological reference values for lithium, which serve as benchmarks for assessing safe exposure limits, further underscoring the need for robust exposure data against which these values can be applied.

A Chronology of Growing Concerns

The current Anses advisory is not an isolated event but rather a culmination of years of scientific inquiry and increasing regulatory concern regarding lithium.

• December 2019: Anses initiates the process by proposing to the European Chemicals Agency (ECHA) that three specific lithium salts (carbonate, chloride, and hydroxide) be classified as toxic for fetal development under the CLP Regulation. This marked an early recognition of significant reproductive health risks.
• 2019 – Present (Ongoing): ECHA undertakes its scientific assessment of Anses’s 2019 proposal. This is a complex, multi-stage process involving scientific committees and public consultations. ECHA is expected to eventually provide its opinion to the European Commission.
• April 16, 2026: Anses releases its latest comprehensive opinion, significantly expanding the scope of concern to include endocrine disruption for human health and chronic toxicity for aquatic organisms. This new advisory updates and reinforces previous warnings, reflecting a broader understanding of lithium’s environmental and health impacts.
• Future (Post-2026): Following ECHA’s submission of its opinion (on both the 2019 and potentially the expanded 2026 recommendations), the European Commission will make the final decision on whether to amend the CLP Regulation to include the proposed classifications for lithium and its salts. This decision will be pivotal for future regulatory frameworks governing lithium’s production, use, and disposal within the EU.

Broader Implications and Stakeholder Reactions

The Anses advisory is poised to have far-reaching implications across various sectors and stakeholder groups.

For Industry: Manufacturers in the battery, automotive, electronics, glass, ceramics, and cosmetics industries, particularly those operating or planning to operate within the EU, will face heightened regulatory scrutiny. The potential reclassification could necessitate significant investments in research and development to find safer alternatives, redesign manufacturing processes to minimize emissions, and enhance waste management and recycling initiatives. While this may increase operational costs in the short term, it could also spur innovation towards more sustainable practices and circular economy models for critical materials. Companies engaging in lithium mining in Europe will also need to adhere to more rigorous environmental impact assessments and implement advanced pollution control measures.

For Consumers: The public will benefit from greater transparency regarding the risks associated with lithium-containing products through clearer labelling. This empowers consumers to make more informed choices, particularly concerning the disposal of electronic waste and batteries, which are major sources of potential environmental contamination. However, increased regulatory costs for industry could potentially translate into higher prices for products such as electric vehicles and smartphones.

For Policy Makers and Regulators: The Anses recommendations reinforce the EU’s commitment to protecting human health and the environment, aligning with the ambitions of the European Green Deal and the Critical Raw Materials Act. The European Commission’s decision on CLP classification will be a critical test of its resolve to balance economic growth and technological advancement with stringent environmental and health standards. It highlights the complex challenge of securing critical raw materials for the green transition while ensuring these materials are managed safely and sustainably. The recommendations also underscore the need for international cooperation in harmonizing chemical safety standards, given the global nature of lithium supply chains.

For Environmental and Health Advocacy Groups: These groups are expected to welcome Anses’s proactive stance, viewing it as a significant step towards better protecting ecosystems and public health from chemical hazards. They will likely advocate strongly for the swift adoption of the proposed classifications by the European Commission and for rigorous enforcement of any new regulations.

The Path Forward: Balancing Innovation with Precaution

Anses’s comprehensive advisory serves as a timely reminder of the critical need for a precautionary approach in managing essential but potentially hazardous substances like lithium. As the world accelerates its transition towards renewable energy and electric mobility, the demand for critical raw materials will only intensify. Ensuring that this transition is truly sustainable requires not only securing supply chains but also meticulously assessing and mitigating the environmental and health impacts throughout the entire lifecycle of these materials. The ongoing scientific scrutiny, coupled with robust regulatory frameworks like the CLP Regulation, will be paramount in striking this delicate balance, safeguarding both human well-being and the planet’s ecological integrity for future generations. The coming decisions from ECHA and the European Commission will determine the future landscape of lithium regulation in Europe, setting a precedent for how critical raw materials are managed globally.