Cancer doesn't care how rich you are. The gap is access.
At the 75th World Health Assembly in Geneva, IAEA Director General Rafael Mariano Grossi advanced a quiet but consequential argument: that nuclear science, long associated in the public imagination with destruction, belongs equally in the story of healing. Through initiatives spanning cancer radiotherapy, pandemic preparedness, and malnutrition measurement, the IAEA and WHO are together confronting a truth that health systems have long deferred — that the gap between who receives lifesaving care and who does not is not a matter of fate, but of architecture. The work is technical, the stakes are human, and the question of whether political will can match scientific possibility remains open.
- Cancer, zoonotic disease, and malnutrition are converging crises hitting low- and middle-income countries hardest, yet the diagnostic and treatment technologies that could address them remain concentrated in wealthier nations.
- The IAEA's 'Rays of Hope' initiative is pushing against a stubborn reality: radiotherapy machines exist, the science is proven, but the infrastructure, training, and sustained funding to deploy them equitably have never been built.
- ZODIAC's network of 125 country laboratories represents a direct response to the pandemic's lesson — that zoonotic diseases respect no border, and early detection requires coordinated global readiness, not reactive scrambling.
- Twenty-five ministerial meetings during assembly week signal that this is not a declaration of intent but an active negotiation — countries, agencies, and partners working out the concrete mechanics of moving equipment and building capacity.
- The ambition is systematic and multi-front, but the gap between institutional rhetoric and sustained resource commitment is where such initiatives have historically faltered.
Rafael Mariano Grossi took the floor at the World Health Assembly in Geneva to make a case that nuclear science, wielded carefully, could rebalance one of global health's most persistent inequities. Speaking to the WHO's 75th governing assembly, the IAEA Director General outlined a vision of deepened collaboration aimed at bringing radiotherapy, nuclear diagnostics, and disease surveillance to the countries that need them most.
The flagship effort, called Rays of Hope, targets the cancer care gap directly. Radiotherapy and nuclear imaging are not experimental — they are established, effective, and almost entirely absent from low- and middle-income health systems. The IAEA and WHO intend to change that through joint frameworks for building and sustaining cancer centers, calibration networks to ensure radiation doses are delivered precisely, and focused attention on cervical, childhood, and breast cancers where early intervention saves lives.
Beyond cancer, the ZODIAC project addresses the pandemic's central warning: zoonotic diseases can move from animals to humans and across continents before health systems have time to respond. A laboratory network now spanning 125 countries is being strengthened with shared training, data protocols, and AI tools designed to identify which COVID-19 patients face the gravest outcomes — building the kind of early-warning capacity the world lacked in 2020.
Malnutrition rounds out the agenda. Using nuclear and stable isotope techniques, the IAEA can measure body composition and nutrient absorption with a precision conventional methods cannot match. The findings are sobering: malnutrition in overlapping forms — undernutrition and obesity alike — exists in nearly every country, often within the same communities.
Through twenty-five meetings with health ministries and a dedicated side event on Rays of Hope, IAEA representatives worked to translate vision into logistics: how equipment moves, how technicians are trained, how systems are built and kept running where resources are scarce. The underlying argument is that health equity is an engineering problem, not a charitable impulse — and that the IAEA and WHO, working together with countries themselves, are attempting to solve it. Whether the resources will prove equal to the ambition is the question that follows every such commitment home.
Rafael Mariano Grossi stood before the World Health Assembly in Geneva last week with a simple proposition: nuclear science, properly deployed, could save lives in the places where cancer care remains a luxury. Speaking to the 75th gathering of the WHO's decision-making body, the IAEA Director General outlined a vision of expanded collaboration that would bring radiotherapy and nuclear medicine to developing countries struggling under the weight of a growing cancer crisis.
The centerpiece of this effort is an initiative called Rays of Hope. The program aims to do what sounds straightforward but remains stubbornly difficult in practice—give poor and middle-income countries genuine access to the lifesaving technologies that wealthier nations take for granted. Radiotherapy, nuclear imaging, diagnostic equipment: these are not new inventions. But they remain concentrated in wealthy corners of the world, leaving vast populations without recourse when cancer strikes. Grossi's message was that the IAEA, working hand in hand with the WHO, intends to change that calculus.
The collaboration extends well beyond cancer. The ZODIAC project represents another pillar of the partnership. ZODIAC stands for Zoonotic Disease Integrated Action, and it operates on a recognition that became painfully clear during the pandemic: diseases that jump from animals to humans can spread globally with terrifying speed. The initiative has built a network of designated laboratories across 125 countries, positioning them to detect such outbreaks early. The IAEA and WHO are now deepening their coordination to ensure these laboratories can share training, data, and response protocols. They are also developing artificial intelligence systems to analyze patterns in COVID-19 chest scans, searching for disease signatures that might predict which patients will face the worst outcomes.
Malnutrition—in all its forms—occupies a third major focus. The IAEA uses nuclear and stable isotope techniques to measure what conventional methods cannot easily capture: body composition, the effectiveness of breastfeeding, how well children absorb micronutrients from food. These precise measurements allow countries to design nutrition interventions that actually work, rather than guessing. The research reveals something uncomfortable: nearly every country on earth faces malnutrition in some form, and many face it in multiple forms at once—some children starving while others grow obese, often within the same communities.
On cancer specifically, the work runs deeper than simply shipping equipment. The IAEA and WHO have jointly published frameworks for setting up cancer centers and strengthening their operations. They conduct postal audits and calibration work through a network of secondary standard dosimetry laboratories to ensure that when a patient receives radiation therapy, they receive the precise dose intended—no more, no less. This matters enormously. A miscalibrated machine can kill. The two organizations have also focused on cervical, childhood, and breast cancers, areas where early detection and proper treatment can dramatically alter outcomes.
During the assembly week, IAEA representatives held twenty-five separate meetings with national health ministries and partner organizations. They hosted a dedicated side event on Rays of Hope, bringing together stakeholders committed to closing the cancer care gap. The conversations were not abstract. They centered on how to actually move equipment, train technicians, build infrastructure, and sustain it over time in places where resources are thin.
What emerges from this work is a recognition that health equity is not charity—it is a technical problem with technical solutions, provided the political will exists to implement them. A country does not lack the ability to operate a radiotherapy machine because of some inherent limitation. It lacks access because the machines are expensive, the expertise is concentrated elsewhere, and the systems to support them have never been built. The IAEA and WHO are attempting to solve that problem systematically, across multiple disease areas, in partnership with countries themselves. Whether that ambition can be sustained, and whether the resources will follow the rhetoric, remains to be seen.
Notable Quotes
Rays of Hope will help developing countries fight the growing cancer crisis by providing greater access to lifesaving nuclear medicines, such as radiotherapy.— Rafael Mariano Grossi, IAEA Director General
Nearly every country in the world is affected by malnutrition, and many experience multiple burdens of malnutrition.— Meena Singelee, Head of the IAEA Liaison Office in Geneva
The Hearth Conversation Another angle on the story
Why does the IAEA—an atomic energy agency—care so much about cancer treatment in poor countries?
Because nuclear technology is the tool. Radiotherapy uses radiation to kill cancer cells. The IAEA has the expertise to help countries use it safely and effectively. But the real answer is simpler: cancer doesn't care how rich you are. It kills in Lagos and Lima just as it does in London. The gap is access, not biology.
The Rays of Hope name suggests something aspirational. Is this actually working, or is it mostly symbolic?
It's too early to say it's working at scale. But it's not symbolic. They're building actual laboratory networks, training technicians, calibrating machines. The hard part isn't the idea—it's sustaining it. Equipment breaks. Technicians leave. Funding dries up. That's where most health initiatives fail.
You mentioned ZODIAC and zoonotic diseases. That feels like it came out of nowhere after COVID.
It didn't come out of nowhere—zoonotic diseases have always been a threat. COVID just made it impossible to ignore. ZODIAC was already underway, but the pandemic accelerated the conversation. Now there's political will to fund early detection systems that might have prevented the whole catastrophe.
The malnutrition work seems almost separate from the cancer and disease work. Why bundle them together?
They're not separate at all. Malnourished children develop cancers at higher rates later in life. Poor nutrition weakens immune systems, making people more vulnerable to zoonotic diseases. The IAEA is saying: if you want to improve health outcomes, you have to address all of it together. Nutrition is the foundation.
What's the real barrier here—money, politics, or something else?
All three, but in different proportions in different places. Some countries lack the money. Some have the money but the political system doesn't prioritize health. Some have both but lack the technical expertise to maintain the systems. There's no single lever to pull.
So what does success look like five years from now?
A country in sub-Saharan Africa has a functioning cancer center that can deliver radiotherapy to patients who would otherwise have no option. A laboratory network catches a zoonotic disease outbreak before it becomes a pandemic. A child's malnutrition is detected early and corrected before it shapes the rest of her life. Small things. But they compound.