January 5th, 2012 by RyanDuBosar in Research
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Consuming excess calories increases body fat, regardless of how many calories come from protein. High-protein diets do affect energy expenditure and storage of lean body mass, just not body fat storage.
To evaluate the effects of overconsumption of low-, normal-, and high-protein diets on weight gain, researchers conducted a single-blind, randomized controlled trial of 25 healthy, weight-stable adults in an inpatient metabolic unit in Baton Rouge, La. Patients were ages 18 to 35 with a body mass index between 19 and 30. The study was headed by George A. Bray, MD, MACP.
After consuming a weight-stabilizing diet for 13 to 25 days, participants were randomized to diets containing 5% of energy from protein (low protein), 15% (normal protein) or 25% (high protein). Only the kitchen staff who supervised participants while they were eating knew the assignments. There was no prescribed exercise, and alcohol and caffeine were restricted.
Patients were Read more »
*This blog post was originally published at ACP Internist*
December 13th, 2011 by Toni Brayer, M.D. in Research
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A study published in the journal Academic Pediatrics reveals that 93% of California children’s hospitals offered unhealthy food to outpatients, visitors and staff in the cafeteria and snack bars. Said another way, only 7% offered healthy food. What did these foods consist of to be called “unhealthy”? Try fried food, sweetened beverages, burgers and lots of sugary sweets.
The study found that 81% of the cafeterias placed high-calorie, high-sugar items like ice cream right by the cash register, a well known marketing plan to tantalize and increase selection. Forty four percent didn’t even offer low calorie salad dressing and fewer than 1/3 had no nutrition information.
Health care workers, like the rest of America, suffer from increasing obesity. One study showed over 54% of Read more »
*This blog post was originally published at EverythingHealth*
December 11th, 2011 by admin in Health Tips, Quackery Exposed
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There’s an old saying in medicine: “Use the new medicine while it still works.” This is more than just a cute quip. The saying encompasses a few different phenomena. When a drug is tested on a few thousand people, the luck of the draw may show a greater effect than would be seen in a larger, more diverse population. Also, less common side effects will become more evident in a larger sample. Once several million people take the drug, it may turn out that the drug isn’t as spectacular in a large, diverse population, and that certain side effects, though rare, are serious.
This is one of the reasons I’m a very conservative and skeptical physician. Today’s miracle drug may be tomorrow’s Vioxx. Less conservative doctors may make much more enthusiastic recommendations. I found one physician promoting pomegranate juice for rheumatoid arthritis (or at least linking to the article on Joe Mercola’s site without comment). It sounds harmless enough, but what’s the evidence? (You can hunt for the page yourself; I’m not linking to Mercola.)
The statement is based on a pilot study out of Israel consisting of data from six patients. The measures used seem quirky, but are irrelevant anyway. There are no conclusions that can be drawn from such a small sample. Despite this, the authors conclude (and Mercola and the doctor who posted the link presumably endorse) that, “Dietary supplementation with pomegranates may be a useful complementary strategy to attenuate clinical symptoms in RA patients.”
Really? Based on what? Read more »
*This blog post was originally published at ACP Internist*
December 9th, 2011 by HarvardHealth in Health Tips, Research
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These days, most adults are overweight, not active, or both. If you could change just one—become active or lose weight—which would be better?
At least for men, being more fit may have a bigger health payoff than losing weight, according to a new study of more than 14,000 well-off middle-aged men who are participating in the Aerobics Center Longitudinal Study. Researchers followed their health, weight, and exercise habits for 11 years. They estimated how physically fit the men were by calculating their metabolic equivalents (METs) from a treadmill test.
Compared with men whose fitness declined over the course of the study, those who maintained their fitness levels reduced their odds of dying from cardiovascular disease or any other cause by about 30%, even if they didn’t lose any excess weight. Those who improved their fitness levels saw a 40% reduction.
Body-mass index (BMI), a measurement that takes weight and height into account, was not associated with mortality. The results were published in the journal Circulation.
What is “fitness”
Fitness is a measure of Read more »
*This blog post was originally published at Harvard Health Blog*
December 3rd, 2011 by RyanDuBosar in Research
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A simple optical illusion might encourage better eating habits, researchers found.
The Delboeuf illusion makes equal size circles appear to be different sizes by surrounding them with larger or smaller concentric rings. Applied to eating, smaller plates make the food servings appear larger.
One problem is that the size of commercially available dinnerware has increased from 9.6 inches to 11.8 inches in the past century. Eating only 50 calories a day more as a result equals enough calories to add five pounds of weight annually.
Practical implications of the research include encouraging people to replace larger plates and bowls with smaller ones, choose plates that contrast starkly with food, and even choose tablecloths that match their dinnerware, the researchers noted. Those with eating disorders or elderly people who need to eat more could follow the opposite advice to improve their intake.
Researchers Read more »
*This blog post was originally published at ACP Internist*
