Helium at Risk: How Strait of Hormuz disruption threatens MRI, AI chips and the helium supply chain

The Guardian Science Weekly episode explains how political turmoil and blockades in the Strait of Hormuz are tightening the global helium supply. Helium, a lightweight and inert gas with critical roles from MRI cooling to silicon chip manufacturing, is now facing shortages as Qatar exports are disrupted and Iranian actions impact production facilities. The programme traces the science behind helium’s rarity on Earth, the logistics of storage and transport, and why fixed versus variable laboratory needs matter for research, hospitals, and industry. It also explores potential mitigations, including recycling, stockpiling, and policy measures, along with the growing impact on balloons and everyday applications.

Key insights

• Helium underpins MRI cooling, superconducting magnets, and semiconductors, making it essential for medicine and AI hardware.
• Geopolitical events around the Strait of Hormuz can rapidly tighten the helium supply chain by halting exports and disrupting facilities.
• The helium market is fragile due to limited sources and the tendency for the gas to escape, complicating storage and long-term availability.
• Mitigation options include closed-loop recycling, strategic stockpiles, and changes to procurement practices to protect critical research and medical infrastructure.

Introduction and context

Science Weekly delves into a crisis that sits at the intersection of geopolitics, economics and technology: the helium shortage driven by disruptions in the Strait of Hormuz. The host Ian Sample outlines how recent weekend talks between the US and Iran ended without an agreement, prompting the US to threaten or implement a blockade that could slow or halt traffic through the crucial waterway. With helium a key global commodity—not just for balloons but for MRI machines, medical devices, and the cooling systems of particle accelerators—the potential for a cascading energy and technology shock becomes clear. The episode frames helium as a strategic material whose availability and price influence many sectors from healthcare to AI manufacturing, making the coming weeks and months a key period for researchers and industry alike.

Key quote: The problem here is that there are two types of helium users. There’s a sort of fixed amount that you need for certain types of instruments and applications, and there’s a variable amount. — Sophia Hayes, professor of chemistry at Washington University in St. Louis

In essence, the programme argues, helium’s central role in critical devices makes its supply chain a national security issue. The discussion moves from the macro geopolitical landscape to the molecular properties of helium, its sources, and how it is handled and transported around the world.

Helium: properties, uses and why it matters

The episode explains helium’s unique properties: it sits atop the periodic table as a noble gas, it is inert and non-flammable, and it has the lowest boiling point of all elements, allowing it to remain a gas at extremely low temperatures. These traits underpin its role in cooling superconducting magnets in laboratories and accelerators such as CERN’s Large Hadron Collider. Beyond physics labs, helium is indispensable in hospital equipment like MRI machines and has wide-ranging uses in aerospace, welding and deep-sea diving. The demand for helium is projected to grow with the AI and semiconductor booms, cementing helium as a strategic material rather than a niche gas.

Key quote: Helium is a very special element that we use in loads of different applications, and that’s because helium has some very special properties. — Sophia Hayes

The host also traces helium’s origins: it is produced on Earth when radioactive elements decay, often captured in natural gas reservoirs where underground formations trap helium. He explains that only a small fraction of natural gas contains helium and identifies the main current suppliers: the US, Qatar, Algeria, Russia and Poland. The dynamic is fragile because helium is easy to lose due to its lightness and because there are few places where it is concentrated enough to be economically extracted. It’s also difficult to store and transport, necessitating liquefaction and cryogenic containment with insulation to prevent loss of the gas.

Key quote: Helium is used for cooling experiments and to purge chambers, replacing reactive gases with helium so experiments can proceed under controlled conditions. — Sophia Hayes

Supply disruptions: Hormuz closure and beyond

The central thread of the episode is the two-pronged disruption to helium supplies. First, the effective closure of the Strait of Hormuz has slowed or halted shipments of helium headed from Qatar, with containers stagnating in the Persian Gulf as the situation unfolds. Second, Iran’s attacks on Qatar’s Ras Laffan and Mesaieed gas facilities, which curtailed production in March, compound the problem. Reuters reports that Qatar Energy expects overall helium exports to fall by roughly 17 percent this year, further tightening markets. While labs have not yet reported widespread, dramatic shortages in major industries, the belt is tightening, and researchers have already heard of allocations cut in half in some US institutions, raising concerns about long-term instrument viability and research continuity.

Key quote: There are two things at play. The first is this effective closure of the Strait of Hormuz that has stopped supplies from being shipped from Qatar. — Maddie

Impact on science and industry

The transcript discusses the potential impact on scientific experiments and lab infrastructure. Helium’s role in fixed, non-optional uses—such as sustaining MRI machines or purging and cooling experiments—poses significant risk if supplies become unstable. The situation is described as chaotic rather than tightly predictable, with prices and allocations fluctuating and with some institutions already considering decommissioning or retooling equipment should shortages persist. The podcast emphasizes that the consequences extend beyond balloons, touching on the core of high-tech research, manufacturing and healthcare.

Key quote: The fixed use things are really where the risk is. A number of labs need helium to sustain instruments, and the instrument can be irreparably damaged if we run out of helium. — Sophia Hayes

Paths forward: recycling, stocks and policy

Looking ahead, the episode explores potential mitigations. Recycling and closed-cycle collection can reduce losses, though helium must be kept leak-tight to be effective. Some labs have helped others during shortages, transferring helium across sites in ways that occasionally breach contracts but demonstrate the community’s willingness to support critical research. The conversation also presses for strategic stocks and improved inventory practices by governments and industry to buffer against shocks and to secure essential services such as MRI capacity. In addition, the discussion touches on broader implications for energy and supply chain resilience, including calls for more diverse sourcing to reduce dependence on a handful of sites.

Key quote: The magic of helium and why it inspires wonder in us is that can you imagine being the first person to see this thing... — Sophia Hayes

Conclusion

The episode closes by reaffirming helium’s importance in modern science and technology, urging a proactive approach to supply-chain resilience, improved recycling, and responsible stewardship of a finite and critical resource. The Guardian’s Science Weekly team thanks the guest scientists and producers, framing helium as a shared challenge across research, medicine and industry.