Weak sunlight can still damage your DNA, scientists warn
A study from QIMR Berghofer indicates that even low-intensity sunlight can cause DNA damage to skin over time. The research challenges the belief that early morning or late afternoon sun exposure is harmless, emphasizing that total UV dose is the primary factor in skin damage.
Why it matters
This finding suggests that current sun safety guidelines may need to be updated to encourage protection regardless of the time of day.
A landmark study from QIMR Berghofer has found that even relatively brief periods outdoors during times of weaker sunlight can damage the skin and add to skin cancer risk.
The results challenge the long standing assumption that spending time outside early or later in the day is largely harmless.
Study co-lead Professor Rachel Neale said the research was the first in Australia to examine what happens when human skin is exposed to levels of UV radiation that naturally occur at the Earth's surface.
"You can get the same dose of UV radiation in a short time in the middle of the day or a longer time earlier or later in the day. Our research has shown it is the total dose that is important - it doesn't matter how long it takes to get it," Professor Neale said.
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