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Cancer survivors are living longer, report shows
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More people are surviving the most invasive types of cancer, according to a federal report released Thursday. - photo by Wendy Leonard
More people are surviving the most invasive types of cancer, according to a federal report released Thursday.

Five-year survival rates are the latest inclusion of a weekly mortality report issued by the United States Centers for Disease Control and Prevention.

Increasing success points to a number of things, but particularly better screening and detection and more targeted and gentler treatment options, according to Dr. Sunil Sharma, chief of medical oncology at the Huntsman Cancer Institute. He said certain cancers, such as colon cancer, have higher cure rates when they are detected earlier.

"Once the patients are diagnosed with invasive cancers, they're actually getting much better and more targeted treatment," he said. "These patients are living longer."

The higher rates of longer life spans, Sharma said, don't even account for the cancer that is being prevented nowadays.

While it might be a "humongous leap" for some people, the doctor suggested that even small behavioral changes can make a big difference.

"Modern lifestyle is such that it kind of forces people to have lots of different things in their lives that are difficult to change," he said. "For example, if people are super busy, they don't get exercise. If it's not feasible, then making incremental changes also helps."

Regular exercise, proper nutrition (limiting animal products), not smoking and reducing stress, Sharma said, "can be very positive for the prevention of cancer."

Not all cancers, though, can be prevented, he said.

The CDC report states that more than 1.5 million invasive cancers were reported in the U.S. in 2011, the latest data available. At that time, 65 percent of cancer patients had survived at least five years after their diagnosis, according to the report.

The most common types remain prostate cancer for men and breast cancer for women, with lung cancer and colon cancer also affecting the highest percentage of patients. The four most common cancers make up half of all cancers diagnosed in 2011, the report states.

"For patients, there's a lot of hope," Sharma said. "Cancer is not an automatic death sentence."

He said that after 30 to 40 years of research and investment, the understanding of the biology of cancer has increased, leading to better detection technologies and more gentle, targeted treatments.

"If you follow the guidelines and we get more patients to screen for these cancers early, many more will be detected at an early stage and we can cure them," Sharma said.

Keeping track of survival rates, the CDC states, is helpful in targeting populations that better screening practices could benefit. The data is routinely used by states to develop cancer control programs, as well as identify and support the needs of a growing number of cancer survivors.
Its toxic: New study says blue light from tech devices can speed up blindness
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A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers. - photo by Herb Scribner
It turns out checking Twitter or Facebook before bed is bad for your health.

A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers.

That process can lead to age-related macular degeneration, which is a leading cause of blindness in the United States, according to the researchs extract.

Blue light is a common issue for many modern Americans. Blue light is emitted from screens, most notably at night, causing sleep loss, eye strain and a number of other issues.

Dr. Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, said our constant exposure to blue light cant be blocked by the lens or cornea.

"It's no secret that blue light harms our vision by damaging the eye's retina. Our experiments explain how this happens, and we hope this leads to therapies that slow macular degeneration, such as a new kind of eye drop, he said.

Macular degeneration is an incurable eye disease that often affects those in their 50s or 60s. It occurs after the death of photoreceptor cells in the retina. Those cells need retinal to sense light and help signal the brain.

The research team found blue light exposure created poisonous chemical molecules that killed photoreceptor cells

"It's toxic. If you shine blue light on retinal, the retinal kills photoreceptor cells as the signaling molecule on the membrane dissolves," said Kasun Ratnayake, a Ph.D. student researcher working in Karunarathne's cellular photo chemistry group. "Photoreceptor cells do not regenerate in the eye. When they're dead, they're dead for good."

However, the researchers found a molecule called alpha-tocopherol, which comes from Vitamin E, can help prevent cell death, according to Futurism.

The researchers plan to review how light from TVs, cellphones and tablet screens affect the eyes as well.

"If you look at the amount of light coming out of your cellphone, it's not great but it seems tolerable," said Dr. John Payton, visiting assistant professor in the UT Department of Chemistry and Biochemistry. "Some cellphone companies are adding blue-light filters to the screens, and I think that is a good idea."

Indeed, Apple released a Night Shift mode two years ago to help quell blue lights strain on the eyes, according to The Verge. The screen will dim into a warmer, orange light that will cause less stress on the eyes.