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...known as subcutaneous fat. Those fat cells are essentially just storage sinks for calories. But visceral fat cells actively secrete hormones and other agents that affect the metabolism of sugar and the way the body burns calories. In people, visceral fat has been linked to metabolic changes, such as higher blood pressure and blood-sugar levels, that increase risk for diabetes and heart disease...

Author: /time Magazine | Title: Fat-Bellied Monkeys Suggest Why Stress Sucks | 8/8/2009 | See Source »

...scans showed that group leaders and the second most dominant monkeys had lower amounts of visceral fat than their subordinates, who carried the bulk of their body fat in their guts. In human populations, something similar happens: studies have linked lower social status to a higher incidence of metabolic syndrome - the condition whose symptoms include high blood pressure, high glucose levels and being overweight - which promotes heart disease...

Author: /time Magazine | Title: Fat-Bellied Monkeys Suggest Why Stress Sucks | 8/8/2009 | See Source »

...behaved worse than others - committing robbery, for instance, vs. smoking cigarettes - earn the most credibility with their peer group, which encourages further bad behavior. "That story [about robbing someone] has a function of making that kid more interesting. He or she gets a lot of attention. [These kids] become higher in the social hierarchy...

Author: /time Magazine | Title: Why Juvenile Detention Makes Teens Worse | 8/7/2009 | See Source »

...what is known as background extinction, whole families of species can disappear, pushed out of existence together. And it's not random. According to a new study published in the August 7 issue of Science, vulnerability to extinction runs in families, meaning that some groups of species have a higher likelihood of becoming extinct than others. "It turns out that some branches of the tree of life are more extinction-prone than others," says Kaustuv Roy, a biology professor at the University of California, San Diego. "Those traits aren't just a part of extinctions that human beings cause...

Author: /time Magazine | Title: Extinction 'Gene': Some Species Are More at Risk | 8/7/2009 | See Source »

...conservationists as well. We're in the middle of what some scientists have begun to call the sixth great extinction event, this one caused almost entirely by human beings. Human expansion, hunting, deforestation and ultimately climate change are eliminating species at a rate up to 1,000 times higher than the evolutionary norm. Species like the Yangtze River dolphin and the golden toad have disappeared, while a range of animals - from the Sumatran tiger to the silky Sifaka lemur of Madagascar are on the brink...

Author: /time Magazine | Title: Extinction 'Gene': Some Species Are More at Risk | 8/7/2009 | See Source »

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