I keep writing about skin cancer, specifically melanoma, because I'm a little obsessed about it. I guess the seriousness of the disease is finally sinking in and making me think.

I want you to think about it too. I want you to stay out of the sun, cover up, dress yourself in sunscreen, report for annual skin cancer screenings, and arm yourself with knowledge.

If you are not convinced by my words alone, please watch this video about how melanoma spreads -- how it breaks away from its original location and metastasizes throughout the bloodstream and lymphatic system, landing in other parts of the body. Melanoma is the deadliest from of skin cancer. This video proves it.

This comment just arrived in response to yesterday's post Headed for melanoma, and it's just too raw and powerful to leave buried in the comment section of the site.

So here it is, word for word -- a chilling and empowering message from a 37-year-old mom of two living with a disease that is downright deadly.

I have melanoma. I was diagnosed last August and have had 6 surgeries in 6 months.

I have lost 4 members in my melanoma support group. I go to Jaime's funeral tomorrow afternoon. She was 29 years old. Heather was 37 when she died on March 2, 2007. The midwife noticed a suspicious mole on her leg during the birth of her 4th child. She died 23 months later. Jan was a mother of 5 ages 9 to 19, she passed away on February 8, 2007. Ceri was only 20 years old when melanoma claimed her life on January 14, 2007.

I always thought skin cancer had to be HUGE, ugly, and hard to ignore. I didn't know it could be small, have no symptoms, and KILL you.

Melanoma incidence is increasing faster than any other cancer. According to statistics found on the American Cancer Society's website (www.cancer.org), the prognosis for someone diagnosed with melanoma is worse, stage for stage, than someone with breast cancer.

Getting more than 3 blistering sunburns during childhood doubles your risk. Sunbed use increases ones risk. Having fair skin and light eyes also puts you at a higher than average risk, but having dark skin does not make you immune. Bob Marley died from Melanoma in 1981.

Everyone at higher risk should get screened by a dermatologist every year. And all of us should be checking our own skin each month.

Melanoma is a virulent and aggressive cancer. It begins in the melanocytes, or the pigment in the skin. It presents itself as a change in an existing mole or skin pigment, or in the formation of a new one. It is easily treated in its most early stages. Once it spreads, though, it is often fatal.

Unfortunately, there is no cure for melanoma. Melanoma is one of the cancers that won't respond to conventional chemotherapy. There have been no significant advances in the medical treatment or survival rate in the last 30 years.

More awareness is needed. Most think "it's only skin cancer" and consider it nothing serious. But I can tell you with absolute certainty, they are DEAD wrong.

Researchers have made a stem cell discovery that may help treat pancreatic cancer -- one of the deadliest forms of the disease.

University of Michigan scientists have found cancer stem cells in pancreatic tumors that appear to drive cell tumor growth and could lead to the development of drugs to target and kill these cells.

Pancreatic cancer kills 97 percent of people diagnosed with the disease within five years. Half of all diagnosed patients die within six months of diagnosis, and this cancer -- that spreads quickly and is rarely detected at an early state -- kills 33,000 each year in the United States alone. So any improvement in the study of this disease is a true gift.

"The clinical implications of this work are significant," said Dr. Diane Simeone, director of the Gastrointestinal Oncology Program at the University of Michigan Comprehensive Cancer Centre and lead author of the study, published in the journal Cancer Research.

"We've made baby steps in improving the survival in these patients -- on the order of a few months (longer to live) -- over the past decade or so. But we really haven't had a major breakthrough in coming up with something that has the potential to provide a cure," she said.

Simeone says killing these cancer stem cells is like pulling out the root of a weed. And she says the best way to pull out the root is to target these stem cells instead of the traditional approach of shrinking tumors by killing as many cells as possible -- an approach that may be flawed because cancer stem cells tend to resist standard therapies.

The combination of breast cancer drugs Tykerb and Xeloda are effective at slowing the progression of metastatic breast cancer after the drug Herceptin fails -- but the drug duo is only effective at extending the lives of patients for a few months, according to the results of a recent international clinical trial.

The trial, led by Charles E. Geyer, M.D., of Allegheny General Hospital, Pittsburgh and published in the December 28 issue of The New England Journal of Medicine, focused on 324 women whose breast cancer had spread to other organs. The women had already been treated with Herceptin for a median of 42-44 weeks -- and then half received Xeloda chemotherapy and half received both Xeloda and Tykerb.

Women who received the drug combination had more than a 50 percent delay in disease progression. Their cancer spread after a median 8.4 months, compared to 4.4 months for women who received only Xeloda.

Targeted drugs Herceptin and Tykerb are major advances in the fight against breast cancer -- for the 20 percent of diagnosed women with the aggressive HER2 positive disease -- and they are also quite expensive. While some say they are worth every penny if they offer a cure, others question the cost if they only delay the disease progression for a few months. Such was the case in this study.

Perhaps the greatest potential for these agents is for use before breast cancer spreads, when they may improve the chance for a cure.

In 2006, 174,470 people will be diagnosed with lung cancer in the United States. About 92,700 men and 81,770 women will develop the disease -- the leading cause of cancer death among both men and women.

An estimated 162,460 men and women will die of lung cancer this year, accounting for 28 percent of all cancer deaths and taking more lives than colon, breast, and prostate cancers combined. While most people diagnosed with lung cancer will die within the first two years of diagnosis -- this has not changed in 10 years -- some people are cured. There are currently about 333,000 long-term survivors.