April 16, 2018


Calorie restriction: Part IIA – monkey studies

Madison, Wisconsin and Baltimore, Maryland: a tale of two studies

by Peter Attia

Read Time 8 minutes

Madison, Wisconsin and Baltimore, Maryland: a tale of two studies
As we discussed in Part I of this series, many experiments ranging from those involving yeast, worms, flies, and rodents have suggested that calorie restriction (CR) can extend lifespan. So when the Wall Street Journal ran the headline, Study Finds Low-Calorie Diet Extends Lifespan of Monkeys, in response to an experiment showing the purported benefits of CR (Colman et al., 2009), it didn’t seem controversial or especially noteworthy.

But this was remarkable for a few reasons. These were monkeys. This study, conducted at the University of Wisconsin (UW),6The Wisconsin National Primate Research Center, or WNPRC, to be more specific. will be 30 years old in 2019, a marvel of longevity in and of itself. The study was also rigorously controlled. If we can put ethics aside, these were captive subjects (individually caged) that had each meal provided to them by investigators.

Researchers can’t do these types of long-ter...

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Featured image by Thomas Schoch CC BY-SA 3.0 via Wikimedia Commons

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