Article Archive
Our species is long–lived compared with other primates. Chimpanzees, for instance, have a life expectancy of about 13 years versus 78.5 years for U.S. babies born in 2009 (Pringle 2013). Why such a big gap? Pringle says vaccines, antibiotics, sanitation, and access to nutritious vegetables and fruits year round give us a huge edge over our great–ape cousins, as does our acquired ability to fight off pathogens and irritants in our environments.
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Fresh Insights on Fat
Fat tissues secrete proteins that influence diet and metabolism. What the latest science means to fitness pros.
By Robert Christner, MS & Len Kravitz, PhD
We've long understood that fat is the body's principal energy-storage tissue. However, it's now becoming clear that fat tissue is a major hormone-secreting organ, producing cell–signaling proteins called adipokines that play an important role in metabolism, feeding behaviors, glucose regulation and insulin control (Singla, Bardoloi & Parkash 2010; Al–Suhaimi & Shehzad, 2013).
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