Dr. John's Health Matters
Welcome to Dr. John's Health Matters blog.
The articles posted here are from various sources who are duly acknowledged. I would appreciate being immediately notified, if any copywritten material needs to be removed. This blog is not intended to replace the qualified advice of a licensed health practitioner. Readers should exercise their own judgment. Enjoy, subscribe, participate and tell others :)
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Posts tagged "day"
Tuesday, Sep 1st, 2009 ↓Daylight-saving Time Leads To Less Sleep, More Injuries On The Job, Study Finds →
Sept 1, 2009 (Sciencedaily.com)—Every March, most Americans welcome the switch to daylight saving time because of the longer days, but also dread losing an hour of sleep after they move their clocks forward. Now a new study shows that losing just an hour of sleep could pose some dangerous consequences for those in hazardous work environments.
The findings are reported in the September issue of the Journal of Applied Psychology, which is published by the American Psychological Association.
“One hour of lost sleep may not seem like a lot. But our findings suggest it could have an impact on people’s ability to stay alert on the job and prevent serious injuries.” said the article’s lead author, Christopher Barnes, PhD. Barnes and co-author David Wagner, PhD, were both doctoral students in organizational behavior at Michigan State University when they conducted this research.
For full article, see link above.
Tags: daylight savings sun sleep day danger hazard work environment injury alert risk
Daylight Could Help Control Our Weight →
Aug 25, 2009 (Sciencedaily.com)—Exciting research into Brown adipose tissue (BAT) — brown fat, which is found in abundance in hibernating animals and newborn babies — could lead to new ways of preventing obesity.
Studies have already shown that BAT activity in adults is reduced with obesity. Therefore, promoting BAT function could prevent or reduce obesity in some people.
New research, led by Michael Symonds, Professor of Developmental Physiology in the School of Clincal Sciences at The University of Nottingham, has shown — for the first time — that daylight is a major factor in controlling BAT activity.
Professor Symonds said: “Our research has suggested a previously unknown mechanism for controlling BAT function in humans and this could potentially lead to new treatments for the prevention or reversal of obesity.”
Winter was traditionally a time of the year that was accompanied with increased thermal demands and thus energy expenditure, but the body’s requirements for BAT has been reduced in recent times by central heating plus global warming. BAT is capable of producing up to 300 times more heat per unit mass compared with all other tissues.
For full article, see link above.
