Tag Archives: UVB

Skin cancer dangers

One is never too old, or too young, for making big mistakes when it comes to skin protection.

According to a new study by the Mayo Clinic, melanoma rates are up in general but women under 40 seem to be effected most.

In fact, women under 40 are eight times more likely to get skin cancer now than they were back in 1970.

Might be a surprising revelation but lead researcher Dr. Jerry Brewer, a dermatologist at the Mayo Clinic has an explanation to it.

“Certainly sunscreens weren’t used as much four decades ago,” the ABC News quoted Brewer as saying.

Brewer revealed that while people are aware of the danger of sun exposure and tanning beds, their behavior isn’t changing.

And moreover, the experts claim that it’s not just the teenager mentality of ‘nothing-bad-will-happen-to-me’ that plays the role here.

There are a number of misconceptions that are jeopardizing everybody.

Which is why, it is imperative that facts about skin care should stay clearly separated from the myths.

Some skin care myths that could be putting your health at risk include:

The Myth says that a yearly mole check is all I need for screening.

However the fact is that If you’re not at high risk for skin cancers, once a year is enough, says Dr. Marina Peredo, a board-certified dermatologist in Smithtown, NY.

But yes, if you’re fair, have a family history of melanoma or have suffered several bad sunburns in your life, you should see a dermatologist every six months.

Another Myth says that one should apply sunscreen as soon as they get to the beach.

The fact is that sunscreen should be slathered at least one hour before entering the sun.

Skin cancer

Skin cancer

“You need to give it a chance to absorb,” said Dr. Tony Nakhla, a dermatologist and author of The Skin Commandments.

By the time one takes a walk from their car to the beach, they have already been exposed to harmful direct sunlight.

Myths are also prevalent as to what is the right method of applying the sunscreen.


The Myth says that one needs to get a base tan so that they don’t burn.

However according to Dr. Nakhla, the fact states that pairing up that thought with some fair genetics and it’s a breeding ground for melanoma.

When you give yourself a “base,” you’re essentially double-dipping in damaging UVA/UVB rays.

There is no such concept as a base tan. A tanned skin is basically a damaged skin, and damaged skin is, well, damaged.

Another Myth that goes around says that if skin is naturally dark, it never burns, which is why dark skinned people don’t need sunscreen

But the fact states otherwise.

“Skin cancer is color-blind,” said Dr. Jeanine Downie, a dermatologist in Montclair, NJ, and coauthor of Beautiful Skin of Color.

In fact, skin cancer rates are increasing among Latinos. Moreover, those with dark skin may not recognize the early stages of skin cancers as easily as people with light skin.

Men at higher risk of skin cancer

Lower levels of an important skin antioxidant may be the reason behind males being more vulnerable to skin cancer than women, a new study has suggested.

Researchers at The Ohio State University Comprehensive Cancer Center have found that male mice had lower levels of an important skin antioxidant than female mice and higher levels of certain cancer-linked inflammatory cells.

The antioxidant, a protein called catalase, inhibits skin cancer by mopping up hydrogen peroxide and other DNA-damaging reactive-oxygen compounds that form during exposure to ultraviolet B light (UVB), a common source of sunburn and cancer-causing skin damage.

“The findings suggest that women may have more natural antioxidant protection in the skin than men,” said study co-leaders Gregory Lesinski and Tatiana Oberyszyn.

“As a result, men may be more susceptible to oxidative stress in the skin, which may raise the risk of skin cancer in men compared to women,” said Lesinski.

Skin cancer

Skin cancer

Lesinski, Oberyszyn, Sullivan and their colleagues conducted the study using a strain of hairless mice that develops squamous cell carcinoma of the skin – the second most common skin cancer in humans – when exposed to UVB.

The investigators also found that treating mice with topical catalase inhibited the migration of the suppressor cells into UVB-exposed skin, suggesting that the influx of these cells in males might be due to the relatively lower skin-catalase activity.

In fact, male mice with UVB-induced skin tumours had 55 percent more of the suppressor cells in the skin than did their female counterparts.


“This is the first report to our knowledge of a sex discrepancy in this group of inflammatory cells in tumour-bearing mice, and it suggests that our findings might translate to other types of cancer,” said Oberyszyn, associate professor of pathology.

“Men face a higher risk of numerous types of cancers, and relatively higher levels of inflammatory myeloid cells might contribute to this susceptibility,” Oberyszyn added.

The research has been published online in the Journal of Investigative Dermatology.