September 14th, 2011 by Peggy Polaneczky, M.D. in Research
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The idea that heart disease mortality rises dramatically at menopause has been one of the truisms of medicine that spawned a generation of hormone use by women and led to the rise and subsequent fall of Prempro in the Women’s Health Initiative, the end-all-be-all study that failed to prove the truism. The truism is still so strongly believed that research to prove it right continues, using different hormone formulations and different cohorts of women, in the hopes that the hormonal fountain of youth was just misbranded and given to the wrong aged cohort.
Now comes a landmark study that suggests that what we’ve thought all along about heart disease and menopause may actually be wrong.
Dhananjay Vaidya and colleagues at Johns Hopkins and the University of Alabama have re-analyzed mortality data on men and women in the UK and US and concluded that, contrary to popular belief, heart disease rates and mortality do not increase dramatically with menopause, but rather rise more gradually as a function of age in both men and women.
“Our data show there is Read more »
*This blog post was originally published at The Blog That Ate Manhattan*
September 2nd, 2011 by MuinKhouryMDPhD in Health Tips, Research
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Campaigns against public spitting in the 19th century were largely driven by concerns about the spread of tuberculosis. However, at the beginning of the 21st century, spitting seems to be making a comeback. Over the past few years, several companies have begun offering personal genomic tests online to the public. There have been famous images of “spit parties”, where celebrities are seen filling tubes with saliva to ship for DNA testing. Getting information on one’s genes has been promoted as fun, as part of social networking, and as a basis for improving health and preventing disease.
When it comes to spitting to improve one’s health, we say: think before you spit. Our knowledge of the potential benefits and harms of these tests is incomplete at best. Despite exciting research advances in genomics of common diseases, there is still much to learn about what this information means and how to use it to prevent disease. A little bit of incomplete or inaccurate information may even be harmful.
There are at least 2 key questions to consider when deciding whether personal genomic tests are worth your spit. Read more »
*This blog post was originally published at Genomics and Health Impact Blog*
August 31st, 2011 by John Mandrola, M.D. in Health Tips, Research
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It’s Wednesday, so I would like to tell you about some cool things I learned this past week about the science of how exercise can be used as a treatment for three common ailments.
First, some background about exercise: The great thing about exercising every day that you eat is that this magic potion is not a shot or a pill. It does not involve a doctor burning or squishing anything in your body. There are no HIPAA forms, no insurance pre-certifications, and not even a co-pay. It’s as we say, easy and free. And drum roll please…exercise is active—not passive.
Here’s the Mandrola take on how exercise might treat three specific medical conditions: Read more »
*This blog post was originally published at Dr John M*
August 24th, 2011 by admin in Health Tips, Research
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A recent article in the Archives of General Psychiatry by Hallmayer et al. discussed the role of genetic and environmental factors in autism and autism spectrum disorders (ASD). The study was a heritability analysis of 192 pairs of twins, which attributed 37 percent of the variation in risk of autism to genetic factors and 55 percent to shared environmental factors. The authors contrasted their findings with those of previous studies, which had given genetics a much higher share (up to 90%).
Rather than contradicting previous research, the new results provide more evidence that autism, like many other common diseases, results from both genetic and environmental factors. The way that these elements – often called “nature and nurture” – influence health outcomes has been discussed for decades but is often misunderstood, even among scientists.
Disease Causation is Not as Easy as… Pie Read more »
*This blog post was originally published at Genomics and Health Impact Blog*
August 19th, 2011 by Davis Liu, M.D. in News, Opinion
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Newsweek has a very provocative and yet incredibly too simplistic piece for the public and patients on its cover story – One Word Can Save Your Life: No! – New research shows how some common tests and procedures aren’t just expensive, but can do more harm than good.
The piece is actually well written and highlights facts that have been apparent for some time. More intervention and treatment isn’t necessarily better. Having a cardiac catheterization or open heart surgery for patients with stable heart disease and mild chest pain isn’t better than diet, exercise, and the prescription medication treatment. PSA, the blood test previously suggested by many professional organizations, isn’t helpful to screen for prostate cancer, even though the value of the test was questioned years ago. Antibiotics for sinus infection? Usually not helpful.
Certainly doctors do bear part of the blame. If patients are Read more »
*This blog post was originally published at Saving Money and Surviving the Healthcare Crisis*
