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
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 ...
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 - ...
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 ...
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.
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 ...
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 ...
'Rationalizer' bracelet tells traders when they're stressed
Electronics / Consumer & Gadgets
Nov 17, 2009 |
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(PhysOrg.com) -- Philips Electronics and the Dutch bank ABN AMRO have joined forces to develop a "Rationalizer" bracelet system that detects stress levels and displays a warning to help day-traders avoid making ...
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 ...
Early life stress has effects at the molecular level
Medicine & Health / Neuroscience
Nov 12, 2009 |
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(PhysOrg.com) -- A new study of mice suggests that stress and trauma in early life can have an impact on the genes and result in behavioral problems later in life.
Possible link studied between childhood abuse and early cellular aging
Medicine & Health / Psychology & Psychiatry
Nov 20, 2009 |
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Children who suffer physical or emotional abuse may be faced with accelerated cellular aging as adults, according to new research from Butler Hospital and Brown University.
Research spawns new discoveries showing how crops survive drought
Nov 18, 2009 |
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(PhysOrg.com) -- Breakthrough research done earlier this year by a plant cell biologist at the University of California, Riverside has greatly accelerated scientists' knowledge on how plants and crops can ...
Transcendental Meditation helped heart disease patients lower cardiac disease risks by 50 percent
Nov 16, 2009 |
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Patients with coronary heart disease who practiced the stress-reducing Transcendental Meditation® technique had nearly 50 percent lower rates of heart attack, stroke, and death compared to nonmeditating controls, according ...
'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.
