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Melanoma Rates May Be Declining in Younger People

New research reveals the rates of melanoma in New Zealand could be starting to decline. However, an Australian expert warns we need to stay vigilant because rates are still high and the number of Kiwis dying from melanoma continues to increase.

Professor David Whiteman, Senior Scientist and Deputy Director of the QIMR Berghofer Medical Research Institute in Brisbane, has told the fifth national Melanoma Summit in Auckland that new, yet-to-be published data seems to shows Kiwis aged in their 20s and 30s have lower rates of melanoma than their parent’s generation at the same age.

“It points to the impact of this age group’s exposure to the sun protection campaigns that began in the 1980s. We’re watching it very closely because if the trend continues, New Zealand could eventually shake off its reputation for having the world’s highest rate of melanoma.”

However, Professor Whiteman warned that was the only cause for possible optimism in New Zealand’s otherwise grim melanoma statistics, and the need to keep up messages about the importance of sunscreen.

“People who were teenagers in the 1950s and 60s still have really high rates of melanoma and the number of New Zealanders dying from melanoma – mainly older people – is still really high. Death rates from melanoma are higher in New Zealand than in Australia and are still going up.”

He says, there’s a suspicion that New Zealanders are presenting with melanomas later than Australians for some reason and that their melanomas are thicker.

There are also other differences, particularly the easier availability in Australia of the new generation of drugs, the immune checkpoint inhibitors, that trick the body’s immune system into recognising and fighting cancer.

“If these are as effective as people believe, rates of melanoma deaths in Australia should start to fall relatively rapidly. If there’s no equivalent decline in New Zealand, a link can be made to the lack of availability of the drugs here.”

He says while sunscreen is very effective in reducing the risk of melanoma, there is much stronger regulation around sunscreens in Australia than in New Zealand, where they are classified as cosmetics and compliance with the standard is voluntary.

“In Australia, sunscreens come under the Therapeutic Goods Administration (TGA), which polices the regulations heavily and will take products off the shelves that haven’t gone through the TGA approval process.

“Australians are sometimes a bit envious of New Zealand’s light touch to some areas of regulation. But the downside in relation to sunscreens is that some products sold as ‘sunscreens’ fail to comply with the standard, so consumers aren’t getting the protection they think they are.

“Regulating sunscreens doesn’t make them more expensive, but it does protect consumers.”

Ends


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