Word: fatted
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Dates: during 2000-2009
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...which it was raised. The National Cattlemen's Beef Association (NCBA), which represents ranchers and feedlots, welcomes grass-finished beef as another market choice but contends that it is no healthier than grain fed. NCBA nutritionist Mary Young acknowledges that grass-fed beef has "slightly" more omega-3 fats than grain fed but says the amount is negligible compared with those in salmon, which has 35 times more. And while grass-fed beef has more CLA, she says, scientists have yet to determine exactly how much is needed for human health. According to the NCBA, growth hormones leave only "minuscule...
Consumers seeking to avoid chemicals have turned to certified-organic beef in recent years, but often it is merely feedlot beef that is fed pesticide-free grain. Grass-fed advocates say such beef does not offer the improved fat profile and other benefits of pasture-raised cattle. A fight has erupted recently over whether milk from feedlot cows can legally bear the USDA organic label. "We need to raise animals on species-appropriate diets," says Jo Robinson, founder of Eatwild.com a website that links consumers to some 800 grass-fed-beef ranches...
...heart disease, cancer and other chronic conditions of aging. "We are trying to put more science behind the nutrition," says Jose Ordovas, a geneticist at the Friedman School of Nutrition at Tufts. "We want to finally understand why nutrients do what they do and to whom--why a low-fat diet may not work for some but works for others...
Would a high-fat diet be particularly damaging to your health, given your genetic makeup? About 15% of folks are born with a form of a liver enzyme that causes their HDL, or good cholesterol, level to go down in response to dietary fat. In most people the HDL level goes up, counterbalancing some of the bad effects of dietary fat on LDL--the dangerous cholesterol...
Greenberg's research is focused on a protein called perilipin, which coats the surface of stored fat in fat cells. "I know perilipin helps regulate the breakdown of fat," he explains. But Greenberg is trying to find out whether there are normal variations in the gene that codes for perilipin that affect a person's risk of becoming obese or developing diabetes. In a study conducted with Ordovas of 1,600 people in Valencia, Spain, Greenberg determined that some of the mutations do seem to correspond to a thinner physique and reduced glucose and triglyceride levels. But other variations...