They also depend on how fat the profit margins are in the firm that loses custom, since that determines how much each consumer gains from switching.
When 5% of earners pay 60% of income taxes how fat a campaign check does it pay them to write to support tea-party politicians that promise no new taxes?
We found, for example, in research from the Rand Institute that the density of fast food outlets in areas was not necessarily correlated with how fat children were in those areas.
Dr. Xu's team showed that the virtual patient, using more sophisticated modeling such as how fat is distributed in the body, can provide more accurate calculations of how much additional radiation an overweight person requires.
In a study published in the American Journal of Clinical Nutrition, green tea extract increased energy expenditure, which is a measure of metabolism, plus it had a significant effect on fat oxidation, or how much fat your body burns.
CNN: Five 'eating better' foods to slip into your diet in '10
Last year, researchers at the University of Wisconsin and Northwestern University found that 90 percent of the college-age women they studied engaged in "fat talk" going on with friends about how "fat" they were, regardless of their actual size.
Certain probiotics can affect the production of bile acids, which in turn affect how much fat people absorb.
The nutritional condition of all the children in the study was also assessed, in the form of their body-mass indices (BMI), a measure of how much fat their bodies contained.
In 2002 they found that the arteries in these mice never clogged up, no matter how much fat they ate, an indication that a lack of leukotrienes lowered the inflammation risk behind atherosclerosis.
It is unclear exactly how the fat increases the clot risk, but experts believe it could be partly physical - compression on the veins - and partly chemical - fat cells make hormones that encourage clotting.
It asked people to document how much saturated fat was in their diet, how many fruits and vegetables they ate, how often they went out for fast food, and how much soda and juice they consumed.
Years of research had educated me about how sugar, fat, and salt change the brain.
In fact, the risks increased steadily depending on how much body fat the women had before they were pregnant.
Genentech, the big biotech firm in South San Francisco, hired him in the late 1980s for his expertise in how fish absorb fat through their intestines.
Genentech (nyse: DNA - news - people ), the big biotech firm in South San Francisco, hired him in the late 1980s for his expertise in how fish absorb fat through their intestines.
The British Heart Foundation says Christmas lunch can provide more calories than are needed in an entire day and has advice on how to reduce fat and calorie consumption, such as removing skin from turkey and eating slowly.
While men ate the same amount of fat no matter how much sleep they got, the women averaged 31 more grams of fat after sleeping for four hours.
The studies measured the participants' body mass index (BMI), a ratio of their height and weight, but it wasn't able to take into account their body fat composition, or how much of their overall body weight was made up of fat versus muscle.
CNN: Obesity paradox: Why being thin with diabetes is dangerous
Alpha, discovered in 1990, is involved in controlling how the body processes fat.
Though Acomplia was initially designed as a weight-loss drug, Sanofi researchers had found by 2001 that the affected receptors play a role in how the body processes fat.
NPR's Karen Grigsby Bates explores the issues behind Americans' expanding waistline with Greg Critser, author of Fat Land: How Americans Became the Fattest People in the World.
However, these studies remind us that it is not always your weight that's important, but where you carry fat and also how it affects your health and fitness.
But one of the long recognised problems of low-fat foods is how they are used: the fewer the calories, the more you can eat, the mantra goes for some.
Evans has spent more than a decade studying three receptors inside cells that control how the body handles sugar and fat.
There have been long-running battles over how to label the amount of fat, sugar, salt and calories in food - with several different systems in place.
So, in anticipation of its upcoming OS refresh, Redmond's pulling back the curtain on how it managed to trim the fat from its previous printing architecture.
ENGADGET: Windows 8 streamlines printing, puts old architecture on the chopping block
They take aim at one or more of three emerging targets: These are peroxisome proliferator-activated receptors (PPARs), which are akin to master relay switches that control how the body uses sugar and fat.
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