September 10th, 2011 by John Mandrola, M.D. in Research
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How could it have happened?
He was strong; do you remember how he could get uphill? He was fit; can you ever recall seeing him out of shape? His blood pressure was perfect, low even. He bragged about his exemplary cholesterol levels.
He was lean and mean.
Wait a minute…what was that about being mean?
When an endurance athlete in middle age is felled by a sudden heart attack, these questions always arise. It’s mysterious, as the idea holds that exercise and fitness should inoculate one from heart disease. But it does not.
There is more to the story of heart attacks than just the big five: genetics, smoking, high blood pressure, diabetes and cholesterol. Read more »
*This blog post was originally published at Dr John M*
September 6th, 2011 by HarvardHealth in Health Tips, Research
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Low-fat diets, move over. When it comes to lowering cholesterol, a “portfolio” diet that includes cholesterol-lowering foods such as oatmeal, nuts, and soy products is better.
Several years ago, researchers at St. Michael’s Hospital and the University of Toronto created what they called a “dietary portfolio of cholesterol-lowering foods.” It went after cholesterol by adding to a heart-healthy diet specific foods known to lower cholesterol: margarine enriched with plant sterols; oats, barley, psyllium, okra, and eggplant, all rich in soluble fiber; soy protein; and whole almonds.
In a head-to-head test against the low-fat diet traditionally recommended by the American Heart Association, the portfolio approach was the clear winner. (You can see the makeup of the test diet here.) After 24 weeks, it lowered harmful LDL cholesterol by 13%, while the low-fat diet lowered LDL by only 3%. As an added benefit, the portfolio approach also lowered triglycerides and blood pressure, and did not depress the level of beneficial HDL cholesterol. The results were published in the Journal of the American Medical Association.
What I appreciate about this study is that it Read more »
*This blog post was originally published at Harvard Health Blog*
August 6th, 2011 by John Mandrola, M.D. in Health Tips, True Stories
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Dehydrated, cramped, limping? on a bike. Road nationals 2010.
People who exercise outdoors face a new threat.
It’s unrelenting.
Consistent.
Inescapable.
Perhaps, even more dangerous than distracted or mean motorists.
It’s the heat. Gosh, is it hot. If only I had a dollar for every time I heard someone say, “Doctor M, you aren’t riding in this heat; are you?”
Well…Other than the fortunate souls smart (or lucky) enough to live in cooler climates, most of us are facing an extreme wave of hotness. As a Kentuckian, I live in the epicenter of this summer’s cauldron. Louisville sits in a wind-protected valley alongside the heat sink that is the Ohio River. Think hot and steamy.
The excessive heat smacked me hard last evening. Normally, my highly-veined skin and northern European heritage serves me well in the heat. But last night, while riding in sight of our city’s skyline, it started: My mouth grew dry and my breathing labored. And why was that helmet feeling so tight? Next came the sensation of tingles—not the pleasant kind of tingles, like when your teenager hugs you. And then came the deal-breaker: chills. I stopped, swallowed my pride and called for a ride home. (Here’s an always for you all: When it’s ninety degrees out and you feel cold–stop exercising, immediately.)
After last night’s brush with heat exhaustion, I thought it reasonable to ramble on about the dangers of exercising in the heat. And of course, I will offer some nuggets of wisdom for beating the heat. Read more »
*This blog post was originally published at Dr John M*
August 1st, 2011 by Glenn Laffel, M.D., Ph.D. in Opinion, Research
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For centuries, health providers have focused on the prevention, diagnosis and treatment of disease. This time-honored paradigm has generated phenomenal advances in medicine, especially during the last 60 years. It has also created a bit of an image problem for providers. That’s because the paradigm encourages consumers to perceive health care as a negative good; an economic term describing a bundle of products and services that we use because we must, not because we want to. Recent trends towards empowered consumers are a symptom of this problem more than a solution to it, as I described here.
Recently, the concept of Positive Health has emerged as a possible antidote for the malaise.
Pioneered by University of Pennsylvania psychologist Martin Seligman, Positive Health encourages us to identify and promote positive health assets—which Seligman describes as strengths that contribute to a healthier, more fulfilling life and yes, improved life expectancy as well. According to Seligman, “people desire well-being in its own right and they desire it above and beyond the relief of their suffering.”
Proponents of Positive Health have proposed that Read more »
*This blog post was originally published at Pizaazz*
July 29th, 2011 by PJSkerrett in Health Tips
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The brutal heat wave gripping much of the country this week is unpleasant for healthy folks. For people with cardiovascular trouble, hazy, hot, humid days can be downright dangerous.
Your body shouldn’t get too hot (or too cold). If your temperature rises too far, the proteins that build your body and run virtually all of its chemical processes can stop working. The human body sheds extra heat in two ways, both of which stress the heart:
Radiation. Like water flowing downhill, heat naturally moves from warm areas to cooler ones. As long as the air around you is cooler than your body, you radiate heat to the air. But this transfer stops when the air temperature approaches body temperature.
Radiation requires rerouting blood flow so more of it goes to the skin. This makes the heart beat faster and pump harder. On a hot day, it may circulate two to four times as much blood each minute as it does on a cool day.
Evaporation. Read more »
*This blog post was originally published at Harvard Health Blog*
