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| Medicine articles |
Fear that freezes the blood in your veins
"The blood froze in my veins" or "My blood curdled" – these common figures of speech can be taken literally, according to the latest studies. Indeed, more literally than some of us would like. For it turns out that intense fear and panic attacks can really make our blood clot and increase the risk of thrombosis or heart attack.
Seeing may be believing -- but is it the same as looking?
If you see something, it's because you're looking at it, right? A recently published study examined this question and established that while people do tend to notice objects within their gaze, it is the assumptions they make about their environment that affects their perceptions. This study gives insight into how the brain and the eye work together to interpret everyday observations.
Brains are hardwired to act according to the golden rule
Wesley Autrey, a black construction worker, a Navy veteran and 55-year-old father of two, didn't know the young man standing beside him. But when he had a seizure on the subway platform and toppled onto the tracks, Autrey jumped down after him and shielded him with his body as a train bore down on them. Autrey could have died, so why did he put his life on the line — literally — to save this complete stranger?
First study hints at insights to come from genes unique to humans
Among the approximately 23,000 genes found in human DNA, scientists currently estimate that there may be as few as 50 to 100 that have no counterparts in other species. Expand that comparison to include the primate family known as hominoids, and there may be several hundred unique genes.
Scientists discover new way of selectively killing cancer cells
A Columbia University professor has discovered a chemical mechanism that can selectively kill cancer cells while leaving normal cells unharmed. Brent R. Stockwell, an associate professor in the department of biological sciences and the department of chemistry at Columbia University, found two new lethal compounds, RSL3 and RSL5, that act through a cellular pathway unique to certain cancers.
Evidence lacking on health benefits of drinking lots of water
A recent look at what is known about the health effects of drinking water reveals that most supposed benefits are not backed by solid evidence. The findings indicate that most people do not need to worry about drinking their recommended 8 glasses of 8 ounces ("8x8") of water per day.
Lack of sleep can provoke sleepwalking
Sleepwalkers are advised to keep a regular bedtime to avoid unwanted evening strolls, according to research from the Université de Montréal. Somnambulism, which affects up to four percent of adults, can cause mental confusion or bouts of amnesia in those affected as they wander unresponsive to their environment.
Researchers link genetic errors to schizophrenia
A team of researchers at the University of Washington and Cold Spring Harbor Laboratories has uncovered genetic errors that may shed light on the causes of schizophrenia. The scientists found that deletions and duplications of DNA are more common in people with the mental disorder, and that many of those errors occur in genes related to brain development and neurological function.
Maintaining aerobic fitness could delay biological aging by up to 12 years
Maintaining aerobic fitness through middle age and beyond can delay biological ageing by up to 12 years and prolong independence during old age, concludes an analysis published ahead of print in the British Journal of Sports Medicine.
Dr. Mom was right -- and wrong -- about washing fruits and vegetables
Washing fresh fruits and vegetables before eating may reduce the risk of food poisoning and those awful episodes of vomiting and diarrhea. But according to new research, described at the 235th national meeting of the American Chemical Society, washing alone — even with chlorine disinfectants — may not be enough.
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Sharing the road
Come summer, we will once again marvel at the amazing athletic skills of Olympic athletes while in fact, the simple act of walking is no less remarkable. Just to prevent us from toppling over, the neuromuscular circuitry that controls all bodily movements relies on constant sensory feedback from the periphery to fine-tune its commands to hundreds of muscles.
Wine may protect against dementia
There may be constituents in wine that protect against dementia. This is shown in research from the Sahlgrenska Academy at University of Gothenburg in Sweden.
Working memory has limited 'slots'
A new study by researchers at UC Davis shows how our very short-term "working memory," which allows the brain to stitch together sensory information, operates. The system retains a limited number of high-resolution images for a few seconds, rather than a wider range of fuzzier impressions.
A little anxiety pays sometimes, study shows
Anxiety gets a lot of bad press. Dwelling on the negative can lead to chronic stress and anxiety disorders and phobias, but evolutionarily speaking, anxiety holds some functional value. In humans, learning to avoid harm is necessary not only for surviving in the face of basic threats (such as predators or rotten food), but also for avoiding more complex social or economic threats (such as enemies or questionable investments).
Stem cell method treats parkinson's symptoms in rats
A team including MIT researchers has demonstrated for the first time that artificially created stem cells can be used to treat symptoms of Parkinson's disease in rats.
New research shows how quickly the brain recognizes odors
The way we detect, identify and respond to odors became a bit clearer when a Boston University research team combined measurements of odor perception with optical imaging in awake, behaving rats to shed light on how smells are initially processed and later perceived by the brain.
Brain DNA 'remodeled' in alcoholism
Reshaping of the DNA scaffolding that supports and controls the expression of genes in the brain may play a major role in the alcohol withdrawal symptoms, particularly anxiety, that make it so difficult for alcoholics to stop using alcohol.
Scientists discover the travel patterns of seasonal flu
Outbreaks of the most common type of influenza virus, A (H3N2), are seeded by viruses that originate in East and Southeast Asia and migrate around the world, new research has found. This discovery may help to further improve flu vaccines and make the evolution of the virus more predictable.
Your belly fat could be making you hungrier
The extra fat we carry around our middle could be making us hungrier, so we eat more, which in turn leads to even more belly fat. Dr. Kaiping Yang and his colleagues at the Lawson Health Research Institute affiliated with The University of Western Ontario found abdominal fat tissue can reproduce a hormone that stimulates fat cell production. The researchers hope this discovery will change in the way we think about and treat abdominal obesity.
Study in flies points to unisex brain
While males and females might sometimes act as though they come from different planets, a new study in flies suggests they are both equipped with a largely unisex brain.
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| Quotes | By convention!
cussed Tom airily.
Cmon Scully... Itll be a nice trip through the woods-Fox Mulder
But what ... is it good for?
Engineer at IBM, 1968, commenting on the microchip.
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