Based on a comprehensive review of scientific studies, people who frequently visit tanning salons in pursuit of the perfect tan may be exposing themselves to a hidden health threat that goes far beyond skin cancer.
Clinical scientists at the University of Manchester have discovered that using tanning beds can trigger serious, and sometimes debilitating, skin reactions when ultraviolet (UV) radiation interacts with common medications, foods, cosmetics, and pre-existing medical conditions.
The study documented cases ranging from painful blistering conditions and severe rashes to flare-ups of autoimmune diseases and allergic reactions, all occurring within minutes of UV exposure.
Some patients became so ill that they required hospital treatment, specialized medical care, and, in a small number of instances, surgical intervention.
Researchers analyzed 34 scientific studies published up to May 2025 and identified 67 documented cases of photosensitivity linked to the recreational use of tanning beds.
Although tanning beds are already recognized as a cause of skin cancer, researchers say many users still do not realize that UV exposure can also trigger unexpected reactions in susceptible individuals.
The study found that a wide range of common medications were associated with adverse reactions following tanning bed use.
These included antibiotics, blood pressure medications, and pain relievers, as well as creams and topical products applied directly to the skin.
Surprisingly, everyday foods also played a role: compounds found in celery, parsnips, and lime juice were linked to painful skin reactions when consumed or applied before UV exposure from a tanning bed.
In several cases, a visit to the tanning salon was the first indication that an individual had an undiagnosed medical condition.
One of the most frequently observed disorders was pseudoporphyria, a blistering condition very similar to rare diseases caused by disruptions in the body’s response to sunlight.
Researchers also identified cases of solar urticaria, a rare condition sometimes described as an allergy to sunlight, which can cause rashes and swelling within minutes of UV exposure.
The study found evidence that tanning bed use can worsen symptoms in people suffering from systemic lupus erythematosus, or lupus, a chronic autoimmune disease known to be aggravated by UV radiation.
The majority of reported cases involved young women, though researchers emphasize that any tanning bed user could potentially experience photosensitivity if they are predisposed to it.
“Most people know that tanning beds increase the risk of skin cancer, but our research shows that’s only part of the picture,” says study co-author Professor Lesley Rhodes. “We found evidence that UV radiation from tanning beds can trigger a surprisingly wide range of photosensitivity reactions, including severe blistering conditions, flare-ups of autoimmune diseases, and reactions linked to widely prescribed medications. Some patients became so ill they required hospitalization. Perhaps most striking is that tanning bed exposure sometimes revealed hidden health problems for the first time.”
Rhodes notes that the findings highlight the need for stronger public warnings and better education for both consumers and tanning salon operators.
“The public should be aware of the potential interactions between UV radiation and medications, cosmetics, foods, and existing medical conditions before deciding to use indoor tanning devices,” Rhodes concludes. “Even a short session in a tanning bed can be enough to trigger a serious reaction in susceptible individuals, which is another reason to think twice before seeking an artificial tan.”
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