February 26th, 2011 by PJSkerrett in Opinion, Research
No Comments »
We all know that using a cell phone can stimulate the brain to work a bit harder. “Mr. Skerrett? This is Dr. LeWine’s office. Do you have a minute to talk about your test results?” or “Dad, a bunch of kids are going to Casey’s house after the dance. Can I go?” But a new study published in JAMA is making me wonder what the energy emitted by the phone itself — not just the information it delivers — is doing to my brain.
Here’s the study in a nutshell. Dr. Nora Volkow and her colleagues recruited 47 volunteers to have their brain activity measured twice by a PET scanner. Both times the volunteer had a cell phone strapped to each ear. During one measurement, both phones were turned off. During the other, one phone was turned on but muted so the volunteer didn’t know it was on; the other was left off. Each session lasted about an hour. The scans showed a small increase in the brain’s use of glucose (blood sugar) when the phone was on, but only in parts of the brain close to the antenna.
It was an elegant study. The researchers took pains to anticipate sources of error. They used a control (both phones off) against which to compare the effect of a “live” cell phone. They used cell phones on each ear, one on and one off, to see if the effect was localized. They muted the phone that was on to eliminate the possibility that any brain activation was due to listening to the sound of a voice coming through the phone’s speaker. So the result is probably a real one, not an artifact or measurement error.
What does this brain activation mean? No one really knows. As Dr. Volkow told NPR, “I cannot say if it is bad that they [cell phones] are increasing glucose metabolism, or if it could be good.” Read more »
*This blog post was originally published at Harvard Health Blog*
February 26th, 2011 by AndrewSchorr in Better Health Network, True Stories
No Comments »
I had breakfast this morning in Las Vegas with my friend, Dave Garcia. Dave is a pit boss on the graveyard shift at the Belagio Hotel where they made the modern-day “Ocean’s 11” buddy movie from 1960. Dave is also a 52-year-old chronic lymphocytic leukemia survivor. He reached out to me online and we have been friends since soon after his diagnosis in 2002.
Dave is a father of two young kids. He dreams of seeing them grow up. But, understandably, he worries. Some days more than others. Today was his day to see his oncologist and get the latest blood test results. Would his white blood count (WBC) be in the normal range? If so, his third round of treatment was still working. If not, he might be headed to a stem cell transplant, short-term disability, and living in another city for weeks or months.
As you can imagine, Dave was on pins and needles today. He would be against more chemo because he worries about the toxic drugs killing cancer cells but weakening him in the long run. Dave admits his blood pressure goes up on these days.
Dave is not alone in his fear. For millions of cancer survivors, while each day is special, some days are anxiety producing. For me it’s when I have a strange ache or pain. I rarely tell Esther, but I worry. For almost everyone it’s on days when we are having a “checkup.” The worry is, is this the day another shoe will drop? Fortunately, that hasn’t come for me yet and I hope it never will. I am happy to say Dave just texted me. His worry today was unfounded. The WBC was normal. He was given a pass at least for a few more months. We hope forever!
At another meeting today in Las Vegas there was a discussion about information for cancer patients. Nurses ticking off all sorts of facts and admonishments to patients. The nurses feel they are doing their job of education quite well. Some patients would say maybe not so well. How come? Fear. For us it is not clinical routine. It is our lives on the line at diagnosis or at a checkup. We often don’t hear so well in those moments. Dave may not have heard so well today. Only one word counted: “Normal.” Read more »
*This blog post was originally published at Andrew's Blog*
February 22nd, 2011 by Felasfa Wodajo, M.D. in News, Research
No Comments »
The word cancer comes from the greek word for crab “karkinos,” so named by Hippocrates who visualized the tumor and its surrounding vessels looking like a crab, dug stubbornly into the sand with its legs. We know far more about cancer today than the ancient Greeks, but the vision of an entrenched opponent, almost impossible to extract whole, appears to be vividly prescient.
What we have realized over the last half century is that removal of the visible tumor is not enough. Even as we learned how to do bigger and more destructive surgeries, the cancer still managed to sneak back in, growing later at different locations. The crab’s legs are still embedded in the patient.
Thus the discovery that certain chemicals could extinguish these rogue cells opened the modern era of cancer therapy and led to the first “cures” from cancer. Many of these compounds were exquisitely toxic. Early experimenters even used nitrogen mustard, quite literally a poison, as Siddhartha Mukherjee tells in his excellent history of cancer, “The Emperor of All Maladies.”
To many, the battle looked grim. For the founder of CollabRx, who himself was living in the shadow of advanced melanoma, this was the signal to take his expertise in internet information technologies and apply it to cancer. Thus a “biomedical software company” was founded, with the mission:
…to save lives by using information technology to personalize cancer treatments and accelerate research.
The rapid proliferation of knowledge about the molecular underpinnings of different cancers, has brought hope for a new age of “targeted” therapies. These drugs are designed to find and destroy cells with aberrant biochemical pathways, while bypassing the normal body tissues. Immense hopes rest on them. Read more »
*This blog post was originally published at iMedicalApps*
February 9th, 2011 by StevenWilkinsMPH in Opinion, True Stories
No Comments »
Let me start by saying I really like MD Anderson Cancer Center. There is a lot to like. Take their tag line for example: “Making care history.” If anyone finds a cure for this cancer or that cancer, MD Anderson will have a hand in it, I’m sure. Hospitals could also learn a thing or two about the meaning of comprehensive care, clinical integration, and customer service from MD Anderson is well.
I have another reason why I like MD Anderson so well: They saved my wife’s life. You see, she was diagnosed back in November of 2004 with stage four non-small cell lung cancer (NSCLC). As anyone familiar with lung care knows, lung cancer is a very tough adversary. It’s an even tougher adversary when your insurance company insists that your local community hospital and oncologists are “just as good” as MD Anderson’s in terms of quality and outcomes.
You guessed it. In 2004, my wife and I had to fight long and hard to get our insurance carrier to authorize my wife care at MD Anderson, an out of network provider. I’m happy to say we won that fight back in 2004 and again just last week when my wife’s employer’s new insurance carrier refused to authorize her continued care at MD Anderson. You see, her new carrier wanted to rehash the whole medical necessity thing all over again.
Now you would think that a world-class organization like MD Anderson would do everything possible to help prospective patients deal with these kinds of insurance issues. After all, they seem to do everything for you once care is authorized. But you would be wrong. Read more »
*This blog post was originally published at Mind The Gap*
February 3rd, 2011 by ChristopherChangMD in Health Tips, Research
No Comments »
USA Today published a pretty accurate article regarding the rise of certain head and neck cancers with the increased popularity of oral sex and number of sexual partners.
The factor that creates this link is the human papillomavirus (HPV) which is associated with tonsil and tongue cancer. Alcohol and tobacco use is more highly linked with such oral cancers, but HPV does appear to be an independent risk factor.
A 2007 study in the New England Journal of Medicine found that younger people with head and neck cancers who tested positive for oral HPV infection were more likely to have had multiple vaginal and oral sex partners in their lifetime. Having six or more oral sex partners over a lifetime was associated with a 3.4 times higher risk for oropharyngeal cancer — cancers of the base of the tongue, back of the throat, or tonsils. Having 26 or more vaginal-sex partners tripled the risk. The association continued to increase as the number of partners in either category increased.
Of greater concern is that “French” kissing may also potentially be a mode of transmission.
The good news (if you’re a young non-smoker diagnosed with HPV-positive tumors) is that about 85 percent of non-smoking people with HPV-positive tumors survive. That number drops to 45 or 50 percent in people who smoke and are HPV-negative. Read more »
*This blog post was originally published at Fauquier ENT Blog*
