Skin cancer awareness month doesn't arrive until May, but Olay and the American Society for Dermatologic Surgery have already chosen their spokesperson for the 2007 Skin Cancer Takes Friends campaign.

Emmy-nominated Desperate Housewives actress Marcia Cross will kick off a nationwide free skin cancer screening and education initiative to alert Americans about the importance of early detection and prevention in the fight against a disease that has affected her personally.

"I'm proud to be part of a cause that is near and dear to my heart," says Cross. "Having had two family members suffer from melanoma, I've come to understand the importance of skin cancer detection and prevention. Knowing what I know about the dangers of sun exposure, I take extra care to protect myself with a large hat, sunglasses, daily UV protection, and of course, an annual screening."

Cross has become an partner in the crusade against skin cancer so she can encourage people to protect not only themselves but their family members and friends too.

Beginning on April 1, log onto skincancertakesfriends.org to find a dermatologist offering free screenings in your area. Take a friend with you to your screening during the months of May, June, and July and each of you will pay not a penny.

Many people don't know just how dangerous skin cancer can be. Yet it's the most common form of cancer in the United States and the incidence of melanoma -- the deadliest form of the disease -- is rising faster than any other cancer. Right now, one in five Americans will develop skin cancer during their lifetimes. And every 67 minutes, someone dies of melanoma.

Screening is a must for everyone -- regardless of skin color, ethnicity, age, or geography. So mark your calendar for April 1 if you'd like a free screening. If money is not an issue, make an appointment today.

Studies exist that link acid-reflux conditions to cancer of the larynx -- or voice box -- but authors of a new study say they all suffer shortcomings in methodology.

The new study, published in the American Journal of Medicine, was intended to make up for these shortcomings by comparing 96 men and women with laryngeal cancer to a group of adults without the disease. All participants were matched by age, gender, and ethnicity -- three of the most important risk factors for this cancer. Overall, the study found people with GERD -- gastroesophageal reflux disease -- were twice as likely to develop laryngeal cancer, compared to those without the condition. GERD has long been considered a possible risk factor for this cancer, mostly because GERD is common among people with the cancer. More definitive studies are on the horizon.

GERD, which occurs when the muscle of the bottom of the esophagus fails to close properly, allowing stomach acids to leak into the esophagus, is also linked to esophageal cancer.

Each month, about 22,000 women log on to the National Cancer Institute (NCI) web site and answer seven questions to determine their risk of developing invasive breast cancer. The Gail Model, named for the NCI's chief biostatistician, Mitchell H. Gail, generates a five-year risk and a lifetime risk for each woman who answers each of these seven questions.

• Does the woman have a medical history of any breast cancer or of any ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS)? Note: This assessment tool cannot accurately predict risk for a woman who already has a medical history of breast cancer.
  
• What is the woman's age? Note: This tool only calculates risk for women ages 35 and older.
  
• What was the woman's age at the time of her first menstrual period?
  
• What was the woman's age at the time of her first live birth of a child?
  
• How many of the woman's first-degree relatives -- mother, sisters, daughters -- have had breast cancer?
  
• Has the woman ever had a breast biopsy? How many breast biopsies has the woman had? Has the woman had at least one breast biopsy with atypical hyperplasia?
• What is the woman's race/ethnicity?

A simple drop-down answer menu is provided for each question, and explanations for each question are available. Upon completion of the short survey, the Gail Model spits out a five-year breast cancer risk and a lifetime breast cancer risk with comparisons to the general population of women.

While this is only an assessment -- based on statistics that do not always take into account individual differences -- it is still a helpful tool. Because it's clear that women can minimize breast cancer risk with behavior changes and sometimes medication. And generating a personal rating on risk is a rating worth knowing. It's also worth knowing that this tool was designed for use by health professionals. If you are not a health professional, consider discussing your results with your doctor.

According to a study done by the U.S. Centers for Disease Control and Prevention, based on data compiled from 2001 and 2002 for the National Health and Nutrition Examination Survey, researchers are reporting that blood levels of cancer-causing perfluorochemicals, PFCs, vary by race and ethnicity. When the researchers analyzed blood samples, they found that Caucasians had a three-time higher blood serum levels of PFCs than Hispanics, and two-times higher levels than African-Americans. Men in all three racial groups had slighter higher PFC levels than women. The differences may be due to the amount of pollutants each group is exposed to, or to diet, lifestyle and genetic factors. That does not explain the blood serum level differences between men and women of the same ethnicity and race, though, unless the increased exposures are linked to certain occupations traditionally done by men and not by women.

PFCs, and the related perfluorochemical PFOA, are global contaminants that do not break down, are cumulative, and can be found in the environment, wildlife, and bloodstream of humans. Introduced in the 1950's for its non-stick and stain-resistant properties, PFCs can be found almost everywhere. In the past, PFCs, including PFOA, were not regulated. It will be interesting if they follow up on why there are differences in the serum blood levels between ethnic and racial groups. It would be easy to conclude that lifestyle and diet may be a factor, if it were not for the differences between men and women of the same ethnicity and race.