BBC Verify debunks false sunscreen cancer claims
BBC Verify has debunked false online claims that sunscreen causes cancer, reaffirming the safety and importance of sunscreen use for skin protection.
The Full Story
A plain summary built from the channels that reported this story.
Social media posts falsely claiming that sunscreen causes cancer have been viewed millions of times online. As rates of skin cancer continue to rise, health experts are warning that such baseless claims could discourage people from protecting themselves against harmful ultraviolet (UV) radiation.
BBC Verify has examined the evidence and found the claims to be false. The science is clear: sunscreen helps lower the risk of skin cancer. However, some online videos and posts allege that sunscreen is full of cancer-causing ingredients or that it is a scam. These claims resurface every summer, and the latest wave has misrepresented a 2023 study.
One of the authors of that study said it has been taken out of context. The study did find that people who used sunscreen more frequently were also more likely to develop melanoma, one of the most dangerous forms of skin cancer. But this was not because of chemicals in the sunscreen. Researchers attribute it to what they call the "sunscreen paradox", frequent users may spend more time in strong sunlight without applying enough sunscreen or reapplying it as often as needed. This can lead to more UV exposure, sunburn, and eventually skin cancer.
Health experts stress that sunscreen should be used as part of a broader sun protection strategy. When the sun is strong, people should seek shade, cover up with clothing, and use sunscreen as a next line of defence for exposed skin. A small amount of sun provides vitamin D, but too much UV radiation can damage DNA in skin cells and increase cancer risk. Sunscreen works by absorbing, reflecting, or scattering UV radiation.
Social media videos showing people making their own sunscreen at home have also gained millions of views. Experts warn that homemade sunscreens are not tested for safety or effectiveness, and there is no reliable way to know how much protection they provide.
Skin cancer has been medically documented for centuries, and cases are rising today due to better diagnosis, longer lifespans, and changing sun exposure habits. Misinformation could undermine public health efforts, but the evidence remains clear: when used properly alongside shade and clothing, sunscreen is an important tool for reducing the risk of skin cancer.
On screen
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Key Claims
Claims reported during this story's coverage, mapped by channel. Ordered by how many channels carried each claim.
| Claim | BBC One |
|---|---|
| A 2023 study was misrepresented; the finding is due to the sunscreen paradox, not chemicals in sunscreen. | |
| Homemade sunscreen is unreliable and not tested for safety or effectiveness. | |
| Sunscreen helps lower the risk of skin cancer. |
Channel Perspectives
What each channel focused on, with key quotes.
The channel focused on the BBC Verify investigation, debunking false online claims about sunscreen causing cancer. It highlighted the misrepresentation of a 2023 study and explained the 'sunscreen paradox' as the real reason behind the study's findings. The tone was factual and authoritative, aiming to reassure viewers about sunscreen safety while warning against homemade alternatives.
- “The science is clear. Sunscreen helps lower the risk of skin cancer.”
- “This was not because of the chemicals in the sunscreen, but more likely due to what researchers call the sunscreen paradox.”
- “They're not being tested for what's in them, and there's no way to know if it's safe or less safe.”
Broadcast Timeline
News broadcasts tracked for this story, in time order.