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WEDNESDAY, NOVEMBER 25, 2009
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NEWS ABOUT: scientific study

scientific study stories: 146 news summaries

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(AP) - Being fat could become the leading cause of cancer in women in Western countries in the coming years, say European researchers. Being overweight or obese accounts for up to 8% of cancers in Europe. That figure is poised to increase substantially as the obesity epidemic continues, and as major causes... More »

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cancer • obesity • Europe • women • obesity epidemic • fat • estrogen • hormones • scientific study • medical study

Lather, Rinse, Disinfect the Showerhead

But even bleach may not kill stealth bacteria invading your bathtub

Sep 14, 09 4:44 PM CDT
(Newser) - The showerheads of America are crawling with bacteria that can cause pulmonary disease in people with weakened immune systems, LiveScience reports. Around 20% of showerheads tested for a new study held significant levels of Mycobacterium avium, which can be suspended in air when water flows and be inhaled deep into... More »

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water • bacteria • scientific study • medical study • contaminants • lungs • pulmonary disease • showerhead • Mycobacterium avium

 Nighttime Snacks  
 Worse Than We Thought 

Mouse study shows weight gain more than doubles on opposite schedule

Sep 5, 09 1:55 PM CDT
(Newser) - Eating when you should be sleeping—the proverbial midnight snack, say, or the meals of night-shift workers—could put you at higher risk of obesity, Time reports. A new study fed two groups of mice the same high-fat diet on opposite schedules; the group that ate during “normal”... More »

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obesity • hormones • eating • scientific study • circadian rhythms • lab mice • midnight snack • chemical imbalance

 Climate Change Reverses 
 8 Millennia of Arctic Cooling 

Temps, up 2.2 F Since 1900, Would Be 2.5 Degrees Cooler Without Greenhouse Gases

Sep 3, 09 4:09 PM CDT
(Newser) - Summer temperatures in the Arctic have climbed 2.2°F since 1900 despite an 8,000-year cooling trend, the Guardian reports. For the past few thousand years, the orbit of the Earth and the changing tilt of its axis has put the Arctic 630,000 miles further from the... More »

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climate change • environment • greenhouse gases • global warming • Arctic • temperature • Sun • orbit • scientific study • Arctic sea ice • cooling

 Obesity May Shrink Your Brain 

Study finds cognitive regions smaller in obese elderly

Aug 24, 09 9:38 AM CDT
(Newser) - Important cognitive brain regions are smaller in older obese people than fit ones, scientists have found. Shrinking brains are tied to dementia, so the discovery fuels the notion that obesity can raise the risk of the cognitive disorder, New Scientist reports. In a review of 94 brain scans, subjects with... More »

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obesity • dementia • cognitive decline • overweight • scientific study • brain scans

New Heroin Addiction Treatment? Heroin

Scientists caution that controversial treatment has its downsides

Aug 23, 09 11:42 AM CDT
(Newser) - Medical heroin may be effectively used to treat heroin addiction, Canadian scientists have discovered, but their dramatic findings may be railroaded over political and financial concerns, ABC News reports. Injectable diacetylmorphine, the active ingredient in heroin, resulted in 67% less illegal activity and illicit drug use after one year when... More »

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drug addiction • heroin • scientific study • methadone

(Newser) - We may have Erik Satie to blame for hold music—the composer “developed a very cynical attitude” toward a distracted listening public and decided modern music would be more like a chair than an intellectual pursuit—but the science behind it is state-of-the-art, Newsweek reports. Studies on the... More »

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music • science • business • composer • telephone • scientific study • hold • Erik Satie

(Newser) - Heart attack survivors who eat chocolate after recovering are much less likely to suffer a recurrence than people who abstain, AFP reports. People who eat at least two servings a week are three times less likely to die from heart disease than those who don’t consume chocolate. And the... More »

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heart disease • public health • medical research • heart attack • chocolate • antioxidants • scientific study • free radicals

(Newser) - The number of Americans on antidepressants doubled from 1996 to 2005, a new study finds, but fewer are seeing psychiatrists, and most aren’t using the drugs to affect their mood. As of 2005, the last year for which data were available, 27 million Americans—roughly 10% of the population—... More »

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depression • advertising • antidepressant • Prozac • pharmaceutical industry • scientific study • health study

DNA Screening May Help Beat Ovarian Cancer

55% of women carry variant placing them
at a higher risk

Aug 3, 09 6:20 AM CDT
(Newser) - An international coalition of geneticists has discovered a DNA variant in women with ovarian cancer that could lead to earlier detection and lower mortality rates, reports the Guardian. More than half of women exhibit the genetic trait, which increases the likelihood of ovarian cancer by up to 40%. The researchers... More »

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cancer • DNA • genetic screening • ovarian cancer • oncology • scientific study • gene variant

(Newser) - If you think blogs are useless, think again: Scientists have developed a “hedonometer,” or happiness gauge, that analyzes personal online statements to pinpoint the overall contentment of the US population on a given day, the Discovery Channel reports. The program looks at sentences beginning with “I feel”... More »

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blogosphere • Internet • computer programming • blogging • blog • scientific study • happiness • Twitter

 Toucan's Beak Really 
 Outsized Thermostat 

Toucans control blood flow to outsized bill to raise or lower body temperature

Jul 23, 09 3:45 PM CDT
(Newser) - New research reveals an unexpected use for the toucan’s outsized bill, Wired reports. Thermal imaging shows that the bird can regulate its body temperature by increasing or restricting blood flow to its beak. “Bird bills are not ‘dead tissues’ incapable of playing a role in heat balance,... More »

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birds • blood flow • scientific study • bill • toucan • body temperature • beak • thermal imaging

(Newser) - Regular doses of Omega 3, found in fish oil, can help reduce memory loss, reports the Telegraph. Healthy 70-year-old subjects taking capsules containing 900 mg of the fatty acid docosahexaenoic slashed errors on a test that measured learning and memory, according to researchers. The improvement, exhibited over a six-month period,... More »

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study • brain • memory loss • scientific study • omega 3 • fish oil

(Newser) - Men who train vigorously on bicycles have low sperm quality verging on infertility, LiveScience reports. A recent study of Spanish triathletes found that those who rode more than 180 miles a week saw the percentage of healthy sperm drop from a group average of 10% to 4%. “We found... More »

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cycling • bicycle • scientific study • excercise • infertility • sperm count • triathlon

(Newser) - Night owls may have a tough time conforming to normal work schedules, but they do have one advantage in athletic ability that early birds can’t match, CNN reports. A new study tested leg strength at various times during the day and found that morning people were consistent while late... More »

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sleep • athletics • workout • scientific study • night owl • early bird • physical activity

Genetic Faults Link Manic Depression, Schizophrenia 

Research slowly unravels genetic causes of mental illnesses

Jul 2, 09 7:41 AM CDT
(Newser) - Scientists have discovered genetic variations that link schizophrenia to manic depression for the first time, the Independent reports. Research made possible by technical advances found that thousands of tiny genetic faults raised the risk of both mental illnesses, which had previously been believed to be completely distinct conditions. Experts hope... More »

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depression • genetics • schizophrenia • mental illness • bipolar disorder • scientific study • women's issues

(Newser) - The gender stereotypes found in the toy aisle may merely be a reinforcement of genetic preferences, the Daily Mail reports. In a recent study of infants aged 3 to 8 months, boys expressed more interest in a toy truck, whereas girls preferred a doll—leading researchers to believe the predilection... More »

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toys • gender roles • scientific study

 15% of Teens Expect 
 to Die Young 

Expectation linked to risky behavior

Jun 29, 09 4:42 AM CDT
(Newser) - Teenagers who engage in risky behavior may do so because they believe they’re going to die young anyway, and may create a self-fulfilling prophecy with that belief, reports the Minneapolis Star Tribune. A study that tracked 20,000 kids in grades 7 through 12 found that 15% thought they... More »

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drug use • pediatrics • death wish • scientific study • teenager • juvenile crime • suicide attempt • women's issues

(Newser) - A few extra pounds can actually be good for you, the Globe and Mail reports. A recent long-term study of Canadian health records shows that people classified as overweight—with a Body Mass Index of 25 to 30—are 17% less likely to die than those with “normal”... More »

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obesity • Body Mass Index • public health • overweight • mortality • longevity • scientific study • BMI • longitudinal study • women's issues

(Newser) - Teens forced to move often by their parents’ jobs are much more likely to attempt suicide than those who stay put, MSNBC reports. Kids between 11 and 17 who moved three or more times were twice as likely to try to kill themselves as children who grew up in the... More »

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parenting • mental health • children • parents • Denmark • scientific study • teen suicide • teenager • moving • adolescence • women's issues

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