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Calorie restriction, longevity, and health

9/20/2012

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Previous studies on caloric restriction in animal models like mice and nematodes found that the reduction in consumption lead to an increase in longevity.  Thus far, the impacts of such dietary restrictions in primate species have been mixed, with at least one major study finding no such association between life span and calorie restriction and another concluding that the restriction did in fact add years.

While longevity is still being debated, these studies are finding that the animals “health span”, or the number of years they live before showing signs of age-related disease, is extended among primates living on calorie restricted diets.  To learn more about the concept of a “health span”, as well as specific findings related to health outcomes such as cancer and heart disease among the study cohorts, please visit: http://news.sciencemag.org/sciencenow/2012/08/caloric-restriction-in-monkeys.html.
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NYC restricts the sale of large sugary drinks

9/14/2012

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Sales on large sodas and sugary drinks at movie theaters, restaurants, and other locations are now restricted in New York City after a vote by the Board of Health.  This is part of the city’s bold move to curb obesity rates; estimates indicate that at least 5,000 city residents die from obesity-related causes each year.

The ban, however, does not include all sellers in the city and doesn’t capture all sugary drinks.  For example, only stores and venues that receive health department inspection grades are impacted by the restriction, leaving vending machines and convenience stores like 7-11 untouched.  Diet sodas are exempt from the ruling, but restaurants with self-service soda fountains can no longer provide cups larger than 16 ounces.
For more on New York City’s new food-related regulations, please visit: http://www.nytimes.com/2012/09/14/nyregion/health-board-approves-bloombergs-soda-ban.html?_r=1.
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To go organic or not: Reactions to a recent Stanford study

9/11/2012

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Recently Stanford University released a systematic review of the published literature regarding the health effects of organic foods compared with their conventionally grown counterparts.  Their study found that, in general, organic products did not have significantly beneficial health effects.  However, of the 237 research results they examined, only 3 actually commented specifically on clinical health outcomes and all of the rest were nutrient- or pesticide-specific studies.  The average difference in pesticide presence between organic and conventionally grown produce was approximately 30%, with organic produce exhibiting less residue.

The public has had strong reactions to the study; for reactions to the Stanford review, please see the following NY Times article: http://www.nytimes.com/2012/09/09/us/would-be-healthy-eaters-face-confusion-of-choices.html?_r=2&pagewanted=all.
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