So your date this weekend didn’t turn out like you’d hoped. A pint of Ben and Jerry’s sounds like the perfect remedy, right? But while a bowl of Phish Food might make you feel good now, if a recent study is any indication, the ice cream binge may trick your brain into scarfing high-fat foods for the next several days.
From PhysOrg.com:
Findings from a new UT Southwestern Medical Center study suggest that fat from certain foods we eat makes its way to the brain. Once there, the fat molecules cause the brain to send messages to the body’s cells, warning them to ignore the appetite-suppressing signals from leptin and insulin, hormones involved in weight regulation.
While we’ve known full well that a high-fat diet is bad for you, and that obesity is on the rise, the study’s results helps explain fats’ role in thwarting the hormones that control appetite. One type of fat, palmitic acid—a saturated fatty acid found in foods like butter, cheese, milk and beef—is particularly skilled at shutting your brain up and letting your body eat more. The effect can last up to three days, which is bad news for those trying to watch their weight during beer-and-wing-fueled football weekends.
The study was performed on rats and mice, but the scientists say their results reinforce common dietary recommendations. Next up, the research team wants to investigate how long it takes to rebound from short-term, high- fat intake.
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Image: flickr/stu_spivack
Researchers hoping to literally get inside the heads of soldiers will have their chance: 20 retired and active members of the U.S. military have pledged to donate their brains for research on the physical effects of war on the brain.
The program will be looking for evidence of brain damage caused by explosions and other wartime trauma, and the researchers involved have already examined the brains of athletes for similar problems. According to the New York Times:
Just as researchers at the Boston University center and elsewhere have linked some athletes’ later-life emotional problems to their on-field brain trauma, the research on military personnel will try to determine whether some soldiers with post-traumatic stress disorder—a psychological diagnosis—actually retain physical brain damage caused by battlefield blasts. Some signs of P.T.S.D., particularly depression, erratic behavior and the inability to concentrate, appear similar to those experienced by concussed athletes.
Such a link could have effects beyond medicine. Disability benefits for veterans can vary depending on whether an injury is considered psychological or physical. And veterans with P.T.S.D. alone do not receive the Purple Heart, the medal given to soldiers wounded or killed in enemy action, because it is not a physical wound.
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New Scientist is reporting that a paper by the U.S. National Academies of Science has thrown out the possibility of using genetic testing and analysis to match soldiers with specific duties/specialties, and monitor their brains for signs of stress or weakness. For instance:
If a soldier is struggling, a digital “buddy” might step in and warn them about nearby threats, or advise comrades to zap them with an electromagnet to increase their alertness. If the whole unit is falling apart, biosensors could warn central commanders to send in a replacement team….
Sponsored by the U.S. army and written by a panel of 14 prominent neuroscientists, the report focuses on those areas with “high-payoff potential” – where the science is sufficiently reliable to turn into useful technologies….
Within five years, biomarkers might be used to assess how well a soldier’s brain is functioning, and within 10 years, it should be possible to predict how individuals are likely to respond to environmental stresses like extreme heat and cold, or endurance exercises.
There’s also the matter of matching people to combat specialties based on a combo of psych and genetics tests:
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