Monday, April 15, 2013

Yoga might help boost mental health

As you stretch into warrior pose and inhale and exhale, you're not just stretching those hamstrings and lungs; you're also doing good for your brain with a practice that can stave off or relieve problems such as stress, depression and anxiety.

Yoga "gives some sense of sanity," says Sat Bir Khalsa, a neuroscientist at Harvard Medical School in Boston. "You're no longer washed away by the avalanche of your emotions. You are more in control."
Yoga practice can also lower heart rate, breathing rate and blood pressure, and may make people less sensitive to pain.

In some cases — particularly for anxiety, depression and stress — yoga might be more effective than medication, though this hasn't been proved, says Dr. Murali Doraiswamy of the Duke University Medical Center in Durham, N.C. While it won't get rid of whatever is causing you distress, it could make it easier for you to deal with the issues. Doraiswamy compares learning yoga to learning to surf: Once you've got the skills, you can ride the wave instead of drowning underneath it.

To find the right sort of yoga practice to calm your mind, it's best to shop around, says Khalsa, a certified yoga instructor and author of the recent ebook "Your Brain on Yoga." Studios and teachers have different styles. Although there's no rule for which practice best addresses the mind, Khalsa suggests seeking out traditional routines that include meditation. Yoga schools with a more physical focus, such as Bikram or power yoga, may provide less mental benefit.

Managing your breath is an important element of the practice, says yogi Cameron Alborzian of Los Angeles, author of the recent book "The One Plan" and host of the reality TV series "A Model Guru." Regulated breathing is where control of the mind begins, he says. In fact, the word "yoga" refers not to the postures alone but to the union of mind and body. Without the breathing and meditative elements, you're just having a nice stretch.

Some people may benefit from visiting a yoga therapist, who typically combines an understanding of yoga with medical knowledge. The therapist can create a custom practice for physical and mental needs. Therapists typically work with one patient or a small group at a time. Make sure your therapist has the right training to address your concerns.

While yoga is an ancient practice, science is starting to take notice of its mental health benefits. Doraiswamy balanced the evidence for yoga and mental disorders in a January review in the journal Frontiers in Affective Disorders and Psychosomatic Research. He and his coauthors found more than 100 scientific studies on yoga and mental health but focused on 16 they identified as high quality.

"Overall, most studies seemed to indicate a benefit," Doraiswamy says. "If this were a drug in the early stages of development, every company would be drooling over it."

However, since yoga is not a medicine that drug makers stand to make millions selling, no company has funded large, extensive trials. Therefore, science cannot offer many firm recommendations on yoga.

 Doraiswamy is not ready to suggest replacing medications with yoga, though it could make a good addition to treatment. And he cautions that even people with mild depression or anxiety should still visit a medical doctor. The symptoms could be due to an underlying condition that no number of sun salutations will relieve.

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Alzheimer's in the News: What Does it Mean?


"Want to protect against the effects of Alzheimer's? Learn another language. That's the takeaway from recent brain research ... " was the lead into recent "CBS Evening News" and "Fox News" reports.

Should we immediately go out and enroll in a French class? A headline in 2006 announced "Cabernet Sauvignon Red Wine Reduces the Risk of Alzheimer's Disease." Should those of us who like Pinot Grigio switch to Cabernet Sauvignon? After reading that people who drink 3 to 5 cups of coffee a day are 65 percent less likely to develop Alzheimer's, should tea drinkers who want to avoid dementia switch to coffee?

It is hard to interpret Alzheimer's research news. Perhaps researchers, while presenting their data accurately, also hope positive results will lead to future funding. Maybe fair and honest news reporters or their editors want to make the front page with startling headlines. For sure all news readers really want to hear good Alzheimer's news whenever possible.

In the case of the link between bilingualism and dementia, we have a unique opportunity to compare news reports -- from February 2011 -- to the actual research. In May 2011, the New York Times carried an interview with the author of the research, Dr. Ellen Bialystok.

 The first news report didn't say whether bilingualism protected only a small group, or whether all multilingual people -- which would include most residents of Canada, most immigrants to the US from non-English speaking countries and many people around the world who speak English, Spanish or Chinese as a second language -- were "protected."

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Why no one can eat just one potato chip

Washington: The scientific secrets underpinning that awful reality about potato chips - eat one and you`re apt to scarf `em all down, has now been revealed.

The research presented at the 245th National Meeting and Exposition of the American Chemical Society, the world`s largest scientific society, which news media have termed "The World Series of Science," features almost 12,000 presentations on new discoveries and other topics.

Tobias Hoch, Ph.D., from the FAU Erlangen-Nuremberg, in Erlangen, Germany, who conducted the study, said the results shed light on the causes of a condition called "hedonic hyperphagia" that plagues hundreds of millions of people around the world.

"That`s the scientific term for `eating to excess for pleasure, rather than hunger`," Hoch said.

"It`s recreational over-eating that may occur in almost everyone at some time in life. And the chronic form is a key factor in the epidemic of overweight and obesity that here in the United States threatens health problems for two out of every three people," he said.

With recent studies showing that two-thirds of Americans are obese or overweight, this kind of recreational over-eating continues to be a major problem, health care officials say.

Among the reasons why people are attracted to these foods, even on a full stomach, was suspected to be the high ratio of fats and carbohydrates, which send a pleasing message to the brain, according to the team.

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Medicare chemo patients are feeling sequester's sting

It may have appeared at first that the federal spending cuts known as the sequester might not cut too deeply. But as some Medicare patients who need chemotherapy are learning to their dismay, there's some real pain in the process.

Seventy-two-year-old George Rossis is in the fight of his life -- battling lung cancer. He and his wife Linda are very happy wth the care he's receiving at a clinic near their Long Island home.
However, that may soon change and Linda may have to start taking time off from work to drive George to a hospital for chemotherapy.

"I am upset, because to think if this is what's going to happen, you know, my concern is for George, too," she said. "And I want nothing but the best for him."

Most medications for seniors are covered by Medicare part D, which is exempt from the automatic budget cuts. But cancer drugs must be given by a doctor, so chemotherapy falls under Medicare part B, which is being cut by two percent.

"It strikes me as being insane," said Dr. Jeff Vacirca, chief executive of North Shore Hematology Oncology Associates, where George Rossis is a patient. "We can't go to the point where we're actually losing money when we're giving chemotherapy drugs. That's not in the end do any favor for our patients because we wouldn't be able to stay in business."

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Rat Kidneys Made in Lab Point to Aid For Humans

Researchers at Massachusetts General Hospital in Boston have made functioning rat kidneys in the laboratory, a bioengineering achievement that may one day lead to the ability to create replacement organs for people with kidney disease.

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The scientists said the rat kidneys produced urine in the laboratory as well as when transplanted into rats. The kidneys were made by stripping donor kidneys of their cells and putting new cells that regenerate tissue into them. Stripping an organ leaves a natural scaffold of collagen and other compounds, called the extracellular matrix, which provides a framework for new cells and preserves the intricate internal architecture of the kidney as well as its basic shape. 
 
Dr. Harald C. Ott, senior author of a paper describing the research that was published online Sunday by the journal Nature Medicine, said that the work was still in its early stages and that there were many hurdles to creating fully functional kidneys for people. But he noted that replacement organs made in this way would have advantages over those made with artificial scaffolds or other techniques. 

“The huge benefit would be that it’s fully implantable in the shape of a kidney,” he said.
About 17,000 people with end-stage kidney disease receive a donor organ each year in the United States, but more than five times as many patients are on waiting lists. In 2011, nearly 5,000 people died while awaiting transplants. Bioengineered kidneys, especially if made using nonhuman sources, could ease or eliminate this organ shortage. 

Dr. Stephen F. Badylak, a researcher at the University of Pittsburgh and a pioneer in the use of extracellular matrix in regenerative medicine, said that similar work had been done with hearts and other organs.
“The real value of this study is that it’s the kidney and it’s a proof of concept, and the clinical need is so great,” said Dr. Badylak, who was not involved in the research. 

Dr. Ott developed the technology of stripping organs of their cells, called decellularization, while at the University of Minnesota. The process uses a detergent to wash away the living tissue, leaving a network of proteins that retains the structure of the blood vessels and other components of the organ. In addition to rat kidneys, Dr. Ott’s group decellularized pig and human kidneys.