Stress (biological)
hideStress is a biological term which refers to the consequences of the failure of a human or animal to respond appropriately to emotional or physical threats to the organism, whether actual or imagined. It includes a state of alarm and adrenaline production, short-term resistance as a coping mechanism, and exhaustion. Common stress symptoms include irritability, muscular tension, inability to concentrate and a variety of physical reactions, such as headaches and elevated heart rate.
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News tagged with stress
Watermelon: Fruit on the Fast Track
Dec 14, 2009 |
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(PhysOrg.com) -- Agricultural Research Service (ARS) scientists are studying how watermelons grow from tiny flowers to plus-size, market-ready produce in only five weeks. Their findings have resulted in the ...
Soldiers get mass swine flu shots before holidays
Dec 11, 2009 |
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(AP) -- Thousands of Army recruits in training must line up at least once more before heading home for the holidays, this time for mass inoculations by the hundreds against swine flu.
Non-invasive technique blocks a conditioned fear in humans
Medicine & Health / Psychology & Psychiatry
Dec 09, 2009 |
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Scientists have for the first time selectively blocked a conditioned fear memory in humans with a behavioral manipulation. Participants remained free of the fear memory for at least a year. The research builds on emerging ...
Studying hair of ancient Peruvians answers questions about stress
Other Sciences / Archaeology & Fossils
Dec 09, 2009 |
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(PhysOrg.com) -- Recent studies show that one in three Canadians suffer from stress and the number is on the rise. But stress isn't a new problem.
Brain imaging shows kids' PTSD symptoms linked to poor hippocampus function
Medicine & Health / Psychology & Psychiatry
Dec 08, 2009 |
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Psychological trauma leaves a trail of damage in a child's brain, say scientists at the Stanford University School of Medicine and Lucile Packard Children's Hospital. Their new study gives the first direct evidence that children ...
Random DNA mix-ups not so random in cancer development
Dec 03, 2009 |
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Researchers at the UC San Diego School of Medicine have pinpointed a mechanism that may help explain how chromosomal translocations - the supposedly random shuffling of large chunks of DNA that frequently lead to cancer - ...
Love hurts: Why emotional pain really affects us
Medicine & Health / Psychology & Psychiatry
Dec 03, 2009 |
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Have you ever felt overly upset by a social snubbing? Your genetics, not your friends, may be at fault.
Researchers find long awaited key to creating drought resistant crops
Dec 03, 2009 |
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Van Andel Research Institute (VARI) researchers have determined precisely how the plant hormone abscisic acid (ABA) works at the molecular level to help plants respond to environmental stresses such as drought and cold. ...
Patients can safely skip pre-surgery stress tests and beta blockers
Dec 02, 2009 |
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Physicians should "throttle back" from routinely ordering stress tests and prescribing beta blockers to patients before non-cardiac surgeries, according to a report by the University of Michigan released online this week.
Engineering professor creates mobile lab for testing bridges
Dec 02, 2009 |
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(PhysOrg.com) -- Civil engineering students at the University of Rhode Island will soon take to the roadways to apply what they have learned in the classroom in real-world analyses of bridges, buildings and ...
Physics Model Determines Dynamics of Friends and Enemies
Dec 02, 2009 |
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(PhysOrg.com) -- Sometimes friends can become enemies and enemies become friends, and it’s difficult to understand exactly how or why the changes took place. A new study shows that when the shifting of alliances ...
Good stress response enhances recovery from surgery, study shows
Dec 01, 2009 |
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The right kind of stress response in the operating room could lead to quicker recovery for patients after knee surgery, according to a new study led by Stanford University School of Medicine researchers. The results could ...
The therapeutic benefits of the human-animal bond
Other Sciences / Social Sciences
Nov 30, 2009 |
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A pet owner knows the enormous joy and comfort that an animal can provide, especially in troubled times. Most pets are considered important members of the family and irreplaceable companions. A growing body of research now ...
'Comfort food' a stress killer: Australian study
Nov 24, 2009 |
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A high-fat, high-sugar diet could have the same effect on brain chemistry as mood-altering drugs, giving scientific support to the craving for "comfort food", Australian researchers said Tuesday.
Acute stress leaves epigenetic marks on the hippocampus
Medicine & Health / Psychology & Psychiatry
Nov 24, 2009 |
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(PhysOrg.com) -- Scientists are learning that the dynamic regulation of genes -- as much as the genes themselves -- shapes the fate of organisms. Now the discovery of a new epigenetic mechanism regulating genes in the brain ...
