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 28th, 2011 by HarvardHealth in Health Tips, Research
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When you sit quietly, your heart slips into the slower, steady pace known as your resting heart rate. A new study suggests that an increase in this rate over time may be a signal of heart trouble ahead.
Your heart rate changes from minute to minute. It depends on whether you are standing up or lying down, moving around or sitting still, stressed or relaxed. Your resting heart rate, though, tends to be stable from day to day. The usual range for resting heart rate is anywhere between 60 and 90 beats per minute. Above 90 is considered high.
Many factors influence resting heart rate. Genes play a role. Aging tends to speed it up. Regular exercise tends to slow it down. (In his prime, champion cyclist Lance Armstrong had a resting heart rate of just 32 beats per minute.) Stress, medications, and medical conditions also influence the heart rate.
In today’s Journal of the American Medical Association, researchers from Norway report Read more »
*This blog post was originally published at Harvard Health Blog*
November 21st, 2011 by HarvardHealth in Health Tips
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No matter how sick my grandmother got or what her doctors said, she refused to go to the hospital because she thought it was a dangerous place. To some degree, she was right. Although hospitals can be places of healing, hospital stays can have serious downsides, too.
One that has been getting a lot of attention lately is the development of delirium in people who are hospitalized. Delirium is a sudden change in mental status characterized by confusion, disorientation, altered states of consciousness (from hyperalert to unrousable), an inability to focus, and sometimes hallucinations. It’s the most common complication of hospitalization among older people.
We wrote about treating and preventing hospital delirium earlier this year in the Harvard Women’s Health Watch. In the New York Times “The New Old Age” blog, author Susan Seliger vividly describes her 85-year-old mother’s rapid descent into hospital delirium, and tips for preventing it.
Although delirium often recedes, it may have long-lasting aftereffects. Read more »
*This blog post was originally published at Harvard Health Blog*
October 26th, 2011 by Toni Brayer, M.D. in Research
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If you want to create an outcry of indignation, just inform people that certain screening tests are of no value and do not increase time on this earth. People love the idea that if they do all the right things and get all the medical tests at the right time, they can prevent disease ( ….uh…no, tests don’t prevent anything) or catch cancer early and cure it.
The furor over the lack of benefit for men of the screening Prostate Specific Antigen test (PSA) is still being heard. It seems everyone knows someone who was “saved” by getting a PSA and don’t try to tell me there is evidence to suggest otherwise, dammit!
There is a new report in the Journal of the American Medical Association (JAMA) that Read more »
*This blog post was originally published at EverythingHealth*
October 12th, 2011 by Paul Auerbach, M.D. in Health Tips, Research
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There were no real surprises for me in the article entitled “Television Viewing and Risk of Type 2 Diabetes, Cardiovascular Disease, and All-Cause Mortality” by Anders Grøntved and Frank B. Hu that appeared in the Journal of the American Medical Association (JAMA 2011;305(23):2448-2455). As stated in the abstract: “Prolonged television (TV) viewing is the most prevalent and pervasive sedentary behavior in industrialized countries and has been associated with morbidity and mortality. However, a systematic and quantitative assessment of published studies is not available.”
The authors performed an analysis of eight previously published studies to determine the association between TV viewing and risk of type 2 diabetes, fatal or nonfatal cardiovascular disease, and all-cause mortality.
The risk of all-cause mortality appeared to increase with TV viewing duration of greater than Read more »
This post, Risk Of Type 2 Diabetes And Cardiovascular Disease: Don’t Be A Couch Potato, was originally published on
Healthine.com by Paul Auerbach, M.D..
