31 Dead, 65 Lung Transplants: The Hidden Health Crisis Behind Quartz Countertops

The countertops in your kitchen might be beautiful. They might also be killing the people who made them.

A new report from the California Department of Public Health documents what researchers are calling a silicosis epidemic among quartz countertop fabrication workers. Between January 2019 and June 2026, health officials identified 592 cases of silicosis in California alone — workers who spent their days cutting and shaping the engineered stone countertops that have become a staple of modern kitchen renovations. Sixty-five of those workers needed lung transplants. Thirty-one are dead.

The median age of workers who died from the disease was 52. The median age of diagnosis was 46. Men make up 99% of all cases. About half the cases came from Los Angeles County. These are young men dying from a product they built for other people's homes.

"Hundreds of workers have been sickened making quartz countertops, a product we do not need, especially when a safer alternative is available," said David Michaels, co-author of the report and professor at George Washington University's Milken Institute School of Public Health. "Given the hundreds of diagnosed cases in California, there are likely thousands more cases across the country."

What's Actually Happening in Their Lungs

Quartz — also called engineered stone — contains more than 90% silica. When workers cut it, grind it, or shape it, it releases an extremely fine crystalline dust. Breathe that dust in long enough and it scars your lung tissue permanently.

The disease is called silicosis. It has no cure. The scarring — called fibrosis — is irreversible. As it progresses, the lungs lose their ability to transfer oxygen into the bloodstream. Workers describe feeling like they're breathing through wet concrete. In severe cases, the only option is a lung transplant. In the worst cases, there's no option at all.

What makes engineered stone uniquely dangerous compared to natural granite or marble is the silica concentration. Natural stone contains silica too — but engineered stone is almost entirely made of it, compressed and bound together specifically for durability. That same density that makes quartz countertops resistant to scratches and stains makes the dust it produces far more dangerous than traditional stonecutting.

Silicosis progresses faster at higher exposures. Workers who cut quartz countertops all day in inadequately ventilated shops — which describes many small fabrication operations — can develop what's called accelerated silicosis in just a few years, rather than the decades-long timeline seen in miners and construction workers with lower-level chronic exposure.

The Numbers Are Almost Certainly an Undercount

The report is explicit about this. Many workers go undiagnosed entirely — either because they don't have access to healthcare, because they don't connect their respiratory symptoms to their work, or because their doctors don't think to test for occupational lung disease in a relatively young patient. Late diagnoses are common, meaning workers who are counted may have been sick for years before appearing in any official data.

Researchers believe the 592 California cases are the visible tip of a much larger national problem. California has better occupational disease surveillance than most states. What's happening in Texas, Florida, Nevada, and other states with large construction and renovation industries but weaker tracking systems is largely unknown.

Australia Already Banned This Material

In 2023, Australia became the first country in the world to fully ban engineered stone — not regulate it, not require better ventilation, but ban it outright. The decision came after a wave of silicosis cases devastated that country's countertop fabrication workforce, with workers dying in their 30s and 40s.

The Australian government concluded that no level of engineering controls could adequately protect workers from the dust generated by cutting high-silica engineered stone, and that the material simply shouldn't be allowed on the market when safer alternatives exist.

California officials say they're now working on regulatory and legislative action. The report's authors are urging them to follow Australia's lead — not just require better dust masks or ventilation, but remove the material from the market entirely.

What This Means if You're Renovating

If you're considering quartz countertops for your home, the risk to you personally is essentially zero — the danger is entirely on the fabrication side, in the shops where workers cut and shape the material before it ever reaches your kitchen. Silicosis requires heavy, sustained occupational exposure to fine silica dust. Using your countertop poses no health risk.

But knowing where the material comes from — and who pays the price for it — is worth sitting with. Natural stone alternatives like granite, marble, soapstone, and quartzite contain silica too, but at much lower concentrations than engineered quartz. Solid surface materials like Corian contain no crystalline silica at all. Butcher block, tile, and concrete countertops are additional options.

The countertop industry is enormous and the demand for quartz isn't going away on its own. What changes things is regulation — and right now California is deciding whether to follow the country that decided 31 deaths and 65 lung transplants were enough.

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