Low sunscreen use, high melanoma rates: a breakdown of the sunsmart message?

Tuesday, January 24th, 2012

Image from Flickr.com by MuffetIt’s estimated that more than 9,000 Americans will die from melanoma this year and 76,000 new cases of the disease will be diagnosed. Melanoma, an aggressive skin cancer which can spread (metastasize) quickly to other parts of the body, is also the second most common form of cancer in young Americans (those aged 15-29).

Overexposure of skin to ultraviolet (UV) radiation significantly increases an individual’s risk of melanoma, particularly at a young age; just one severe sunburn in childhood can double the lifetime risk of melanoma. Sun protective measures such as clothing and sunscreen are seen as key to reducing melanoma risk. (more…)

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Ultraviolet A more cancer-causing than once thought

Tuesday, October 18th, 2011

While the evidence linking sunbeds to the development of skin cancer continues to mount, recent research provides new insight into the underlying mechanisms.

Radiation from both the sun and tanning beds is made up of various wavelengths, including visible light and several types of ultraviolet (UV) radiation. Ultraviolet B (UVB) rays, those which cause sunburn, have long been heralded the culprit which initiates skin cancer. It does this by damaging the genetic information (DNA) within skin cells, forming lesions known as cyclobutane pyrimidine dimers (CPDs) and pyrimidine (6-4) pyrimidone photoproducts (6-4PPs). These lesions create mutations in the DNA which can lead to the development of skin cancer (you can read about this process here). (more…)

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Children at greater risk of melanoma spreading

Tuesday, October 11th, 2011

A recent study of melanoma in children and young adults indicates that there may be greater risk of metastasis, or spread, of the cancer in younger patients. The study, conducted by researchers at Baltimore’s John Hopkins Children’s Center, involved analysis of 2008 SEER (Surveillance, Epidemiology, and End Results) data on melanoma cases from 2003 to 2008. A total of 717 children and 1368 adults, aged 20-24, were diagnosed during this time.

Investigators looked at patients who received biopsies of the sentinel lymph nodes (SLN; those nearby the initial tumour) and the number of those in whom the disease had spread to this site. It was found that, of those biopsied, children were more likely to have cancer cells which had infiltrated the removed lymph nodes (25%), indicating greater rates of metastases than in adult patients (14%). (more…)

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A coffee a day keeps skin cancer at bay? Look a little deeper…

Thursday, August 18th, 2011

We tweeted it earlier this week and it’s been run across numerous news sites: new research has suggested that coffee – or more specifically caffeine – can help reduce the risk of skin cancer. It’s a fascinating story and one which deserves further review.

The research, conducted across multiple US sites and supported by National Institutes of Health grants, sought to expand upon an existing understanding of the correlation between the intake of caffeinated beverages and a decrease in the incidence of non-melanoma skin cancers. (more…)

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Ultraviolet radiation and its effects on the skin

Wednesday, June 22nd, 2011

Ultraviolet (UV) radiation forms part of the electromagnetic spectrum between visible light and X-rays; it is invisible to the human eye. UV light can be separated into three bands, UVA (400-320nm), UVB (320-290nm) and UVC (290-100nm). Of the UV radiation that reaches the Earth’s surface from the sun, approximately 6% is UVB and 94% UVA.

Skin maintains a curious balance with UV radiation. When UV impacts upon skin, the various wavelengths of light penetrate to different levels and thus have a number of effects.

(more…)

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“Solariums make a mockery of our efforts to reduce skin cancer”: Cancer Council Australia

Monday, May 16th, 2011

Cancer Council Australia has launched one of the strongest public attacks to date on the use and regulation of sunbeds in the country. This follows a report that some solarium devices emit UV radiation six times stronger than the sun at midday in Australia.

In a press release issued today, the CEO of Cancer Council Australia, Professor Ian Olver, cited a paper published in this month’s Photochemistry and Photobiology journal when calling for the Australian Government to phase out solariums. (more…)

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Dear 16-year-old Me

Thursday, May 5th, 2011

A great new viral video from the David Cornfield Melanoma Fund went live earlier this week. Check it out:

 

 

Head to the DCMF website for more on their work. You can read more about melanoma on our website.

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Melanoma/Skin Cancer Detection and Prevention Month

Tuesday, May 3rd, 2011

May is Melanoma/Skin Cancer Detection and Prevention Month in the US, and with summer just around the corner in the northern hemisphere, this is a timely reminder of the dangers of unprotected UV exposure.

Skin cancer is one of the most common forms of cancer in America, with more than 3 million cases diagnosed each year and over 10,000 deaths from the disease. Worryingly, unlike most forms of cancer which are declining, skin cancer rates in America are on the rise. There are three common types of skin cancer – basal cell carcinoma, squamous cell carcinoma and melanoma. Of these, melanoma is the least common, and yet the most frequently lethal form. (more…)

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How does indoor tanning cause skin cancer?

Wednesday, April 6th, 2011

Tanning causes skin cancerEarlier today, new stats were published by Cancer Research UK highlighting that two young adult Britons are diagnosed with skin cancer every day; a rate which has tripled since the 1970s. There were several factors highlighted as contributing to this increase, but one was most clearly singled out in the release:

“using a sunbed before the age of 35 can increase your risk of melanoma by 75%”

(more…)

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Devices for detecting skin cancer – Part 2

Friday, March 18th, 2011

This is the second in a two-part blog series on devices used to detect skin cancers in humans. The first post, which you can read here, looks at existing tools.

In recent years, several scientific research organisations and companies have begun studying and refining devices designed to detect cancerous lesions on the skin.

Although it is unlikely that these innovative technologies will be a replacement for a dermatologist’s professional judgment, they may significantly aid and hasten the diagnosis process. Four of the latest technologies have caught the media’s attention in recent years. (more…)

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