One of the most dangerous professions of all is “firefighter.” But the job carries more than just the risk involved in answering a call. Nearly half of all on-duty deaths are a result of heart attacks, often after the call is over. Now a study in the journal Circulation may show why. Researchers say that extreme heat combined with physical exertion dehydrate the body, divert blood to the skin, lower blood pressure and increase blood clotting in the body. Firefighters involved in the study rescued a simulated victim during exposure to temperatures as high as 750 degrees.
People are supposed to get eight hours of sleep per night if they can but more than nine hours a night could be an early sign of dementia. A study in the journal Neurology finds that elderly people who consistently sleep more than nine hours a night have twice the risk of dementia over the next 10 years as people who sleep less. The risk climbs to six times normal in long sleepers without a high school degree.
A finally, if you want people to avoid junk food in vending machines, make them wait. In a study presented to the Society of Behavioral Medicine, researchers rigged vending machines with a 25-second delay before dispensing junk food, and a notice of the delay on the machine’s LED screen. Purchasers had a chance to buy something else to avoid the delay, and many did. Healthy snack purchases increased by as much as five percent.
We’ve reported on how dogs can sniff out a variety of diseases in people with scientists trying to create a mechanical nose to do the same thing. Now a study presented to the American Chemical Society shows they’re making progress. Researchers have identified a signature odor in 90% of cases of prostate cancer and have developed a chemical test to detect it. Doctors are looking for an alternative to the PSA test to detect prostate cancer because of the high proportion of false positives.
People who are depressed have a surprisingly high risk for heart disease. A new study in the journal Atherosclerosis shows that depression is just as much of a cardiovascular risk as obesity and high cholesterol. The 10-year study finds that depression is to blame for about 15% of all heart disease deaths, a rate exceeded only by smoking and high blood pressure. About 350 million people around the world suffer from depression.
It might be easier to get into an argument when you’re tired because you’re misreading the emotions of other people. A study in the journal Neurobiology of Sleep and Circadian Rhythms shows that sleepy people have trouble interpreting some emotions in the faces of others compared to those who are well rested. Tired people can read fear and anger in others’ faces but more subtle emotions are misinterpreted far more often.
And finally, slightly more than half of parents give sports the green light for their kids but about one in every six completely rule them out. The reason? Concussions. The rest of parents, about a third of them, allow participation on a sport by sport basis, according to a Harris survey for the American Osteopathic Association. About two thirds of parents say basketball and baseball are ok for kids. But less than 20% approve of their children playing football.
People who’ve gone to the hospital for treatment of a mental health disorder have an increased risk of stroke for months afterward. A study presented to the International Stroke Conference in Houston shows that people going to the hospital for psychiatric disorders like depression, anxiety and PTSD have triple the risk of a stroke in the next month and double the risk for the next year or more. Scientists speculate that mental illness may provoke the body’s “fight or flight” mechanism which can raise blood pressure and stroke risk.
Early risers may be healthier than people who sleep in. A study in the journal Obesity shows that early birds tend to eat more balanced diets than night owls. They also eat earlier in the day, which helps with weight loss and lowers the risk of diabetes and heart disease.
And finally, many Americans are working from home at least part of the time and a new poll shows we like it that way. However, a little bit of office camaraderie is a good thing. The Gallup survey finds that 43 percent of employees work remotely at least part of the time and that the most engaged workers are those who spend three to four days a week working from home. People who work in the office all the time or at home all the time are the least engaged employees.
Synopsis: New parents are often at wits’ end when their baby won’t sleep. Infants who won’t sleep and cry inconsolably are also at major risk of being victims of shaken baby syndrome. Experts discuss the connection and ways babies can be more reliable sleepers.
Host: Nancy Benson. Guests: Dr. Ronald Barr, Professor of Pediatrics, University of British Columbia and Fellow, Canadian Institute for Advanced Research; Dr. Janet Krone Kennedy, clinical psychologist, founder, NYC Sleep Doctor and author, The Good Sleeper: The Essential Guide to Sleep For Your Baby and You