Archive for August, 2009

Smoking Is Really Bad For You*

Monday, August 31st, 2009

*even if you don’t smoke very much.

A new article in Circulation, a journal published by the American Heart Association, is sure to make the news after concluding that second-hand smoke is much more dangerous to the heart than previously known. This is an interesting finding, and will probably lead to more states and communities adopting smoking bans in bars and restaurants.

But what I found even more interesting was the suggestion that the relationship between amount of smoking and cardiovascular mortality is pretty steep, even at fairly low levels. In fact, smoking only three or less cigarettes per day raises your heart attack risk almost 2/3 as much as smoking a whole pack. This is the most compelling evidence I’ve yet seen that cutting back doesn’t equal quitting.

American Heart Association Takes on Sugar

Tuesday, August 25th, 2009

The American Heart Association (AHA) has issued recommendation guidelines on dietary sugar for the first time in their history. These guidelines, which vary by age, gender, and activity level, are aimed at keeping calorie intake down, presumably lowering the risk of obesity.

These guidelines, if followed, could lead to profound changes to the average American diet. Currently, an estimated 15-20% of total U.S. calorie intake comes from added sugars.

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Health Care Rationing - How Does It Work?

Monday, August 10th, 2009

All of the sudden, health care rationing is the big issue related to a national health care program. The opponents of the program have stated that rationing will lead to “death panels” who will decide which citizens live and which will die. Proponents of the program refuse to acknowledge aloud that rationing exists as a concept, let alone that we need to do more of it to manage health care costs.

If anybody is truly interested in how scarce health care resources might best be rationed - whether it be a limited number of transplant organs, vaccines, or meds in an emergency setting - I recommend reading Ezekiel Emmanuel’s article in the January 31st issue of the Lancet. Basically, this article recommends that scarce resources be allocated related to several criteria - age, number of expected lives saved, patient prognosis. If this is still not enough differentiation, random chance (lottery, if you will) is the final determinant.

Most importantly, and directly refuting the argument made in the link above, the article recommends that resources only be allocated based on the value of an individual to society in a public health emergency. For example, if providing immediate care to a nurse might in turn provide care to an additional 20 people, that nurse should be a priority for care.

Of course, the system we have now rations care almost exclusively by this “instrumental value” criterion, measured simply by income potential. In other words, care is allocated to people who can afford it. People who can’t afford care are treated through overburdened public institutions and often after they develop emergent problems.

Medical ethics is a tricky business, and a complicated conversation. To see this conversation treated in such a shabby manner in the political world is both disappointing and unsurprising.

Are Organic Foods More Nutritious?

Wednesday, August 5th, 2009

A review article published last week in the American Journal of Clinical Nutrition has ignited controversy by concluding that organic foods are not demonstrably more nutritious than conventionally grown foods.

This review article summarized 55 research trials and looked at 11 specific nutrient categories (for plant foods). Looking at the nutrients surveyed and the ones that were not is probably the key to understanding the significance of this research. The nutrients studied were nitrogen, vitamin C, phenolic compounds, magnesium, calcium, phosporus, potassium, zinc, soluble solids, copper, and total acidity.

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