Obesity As a Disease – Really! (VIDEO)
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People May Adopt the Diet and Exercise Patterns of the Least Fit in their Peer Group
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| Who you follow makes a difference. |
The decline in the physical fitness of the U.S. population has been increasingly in the news.
Nearly two-thirds of adults are currently overweight, while more than 30% are obese.
While societal factors have shifted people toward increased food consumption or decreased exercise, a provocative recent explanation is that the effects of social and environmental factors may be amplified by the person-to-person spread of obesity.
A study in which college students were assigned to spend most of their time with 30 other randomly chosen undergraduates shows that people may adopt the diet and exercise patterns of the least fit within a peer group, says a team led by Scott E. Carrell of the University of California-Davis. The data suggests that if half of your friends were to become among the least fit (for reasons unrelated to you), your own fitness level would drop by nearly 20% of a standard deviation. The people most susceptible to being influenced by the least fit are those who are already struggling to maintain their fitness, the researchers say.
This explanation has profound implications, as it suggests that social networks can multiply the effects of otherwise smaller changes in the determinants of obesity.
Conversely, if social networks are an important determinant of health, policies that increase individual health could conceivably combat the obesity epidemic.
So be a good influence!
Sources:
http://econweb.tamu.edu/mhoekstra/fitness.pdf and Harvard daily blog.
http://econweb.tamu.edu/mhoekstra/fitness.pdf and Harvard daily blog.
Certain Drugs Can Trigger or Slow Alzheimer’s (VIDEO)
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Americans Living Longer but Are Less Healthy (VIDEO)
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Americans Living Longer but Are Less Healthy
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| Wrong, wrong, wrong. |
So just on the heels of reporting that if you make it to 90 you have a reasonable shot at living with a quality of life to 95 comes this.
Americans are living longer than they did two decades ago, but they are losing ground on key measures of health to people in other developed nations.
Researchers, led by Christopher Murray, director of the Institute for Health Metrics and Evaluation at the University of Washington in Seattle, in a study published by the Journal of the American Medical Association, show progress in reducing death rates, adjusted for age, across a variety of diseases. But death rates from illnesses associated with obesity, such as diabetes and kidney disease, as well as neurological conditions like Alzheimer’s disease, are on the rise. And to top it, the number of years of living with chronic disability rose for the average American in the past 20 years, partly reflecting increased longevity.
The findings are considered the most comprehensive analysis of the health of the U.S. population in more than 15 years.
“Despite a level of health expenditures that would have seemed unthinkable a generation ago, the health of the U.S. population has improved only gradually and has fallen behind the pace of progress in many other wealthy nations,” said Harvey V. Fineberg, president of the Institute of Medicine, in an editorial accompanying the report.
We are getting sicker sooner, at age 68.1, and living with illness longer. The U.S. ranking for a healthy life span fell to 26th from 14th two decades ago.
The lead causes of premature death in the U.S. remained heart disease, lung cancer and strokes. Leading contributors to disability were lower-back pain and other disorders of muscles, nerves and joints, as well as depression and anxiety. Poor dietary habits have overtaken smoking as the most important risk factor associated with years of life lost to disability and to premature death.
The common thread to all of these recent studies is that most of this is under our control. And as I reported in a previous blog, exercise is not enough. It is the combination of diet and exercise that does the trick. That is why it is disturbing to see that poor dietary habits have overtaken smoking as the most important risk factor.
