Lancet Commission Names AI and Nuclear War as Only Threats That Could Cause Human Extinction by 2100

A 35-member Lancet Commission on 21st Century Global Threats to Health has identified 17 interlinked threats that could each cause at least one billion healthy years of life lost globally by 2100, according to the report presented at the World Health Summit in Berlin on October 11, 2026. Two of those 17 — the malicious use of artificial intelligence and nuclear conflict — are singled out as the only threats with the potential to end humanity entirely before the end of the century, according to summaries of the report from ground.news and zetik.com.

Why AI made the extinction-risk list

The Commission estimates that malicious use of AI could cause roughly 10.4 billion disability-adjusted life years (DALYs) — a standard measure of healthy life lost to death or disability — by 2100, according to ground.news's summary of the report. The authors point to AI's potential to lower the technical barriers to creating biological weapons and to its growing integration into nuclear command-and-control systems as key escalation pathways, per the same account.

The report also flags competitive pressure among major AI developers, including OpenAI and Google DeepMind, to deploy systems quickly, alongside the spread of openly available AI models, as factors that complicate international oversight, according to zetik.com. The Commission says that no AI-related harmful event of a truly global scale has occurred so far, per ground.news's summary, even as it warns the risk is rising.

Nuclear conflict: the other extinction-level threat

Nuclear conflict is estimated to carry a potential burden of about 9.35 billion DALYs, according to ground.news. The Commission's extinction scenario for nuclear war centers on a large-scale exchange injecting enough particles into the upper atmosphere to block sunlight, disrupt agriculture and trigger mass famine — a mechanism commonly referred to as nuclear winter, as described in the newsable.asianetnews.com summary of the report.

The Commission stresses that while AI misuse and nuclear conflict are the only threats on the list capable of causing extinction, their likelihood remains low, according to both ground.news and zetik.com's reporting.

The other 15 catastrophic threats

The remaining 15 threats on the list do not carry extinction potential in the Commission's assessment, but each is projected to cause at least one billion lost healthy years by 2100. They span disease, environment, society, economics and conflict, according to newsable.asianetnews.com's listing of the full report.

Among the non-extinction threats, income inequality is projected to impose a health burden the Commission compares to roughly 25 COVID-19 pandemics, according to ground.news. Declining international development assistance for health could cause up to 1.5 billion DALYs, with about 70% of that burden concentrated in sub-Saharan Africa, per zetik.com's summary. Limiting global warming to 1.8°C rather than 4.4°C could prevent roughly 1.89 billion healthy years of life lost, the same source reports.

Methodology and who led the report

The Commission's 35 experts analyzed data across 204 countries and regions, classifying a threat as "catastrophic" if it could plausibly cause at least one billion DALYs between 2025 and 2100, according to unboxholics.com's summary. The report was co-chaired by Christopher Murray of the Institute for Health Metrics and Evaluation at the University of Washington and Natalia Kanem, with contributions from commission members including Ibrahim Abubakar of University College London, per newsable.asianetnews.com and zetik.com.

Co-chair Christopher Murray warned that delaying action on the identified threats would increase the costs of dealing with them later, according to ground.news. The Commission says it plans to issue annual updates following the Berlin launch, per the same report.