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FRIDAY, NOVEMBER 27, 2009
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NEWS ABOUT: scientific study

scientific study stories: 146 news summaries

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CDC Sharply Raises
Estimate of HIV Cases in US

New test indicates 40% more infected in US each year than reported

Aug 2, 08 1:13 PM CDT
(Newser) - A lot more people in the US have HIV than previously thought. A new CDC study suggests that the US has undercounted by about 15,000 cases a year for 15 years or so, the New York Times reports. That would add 225,000 cases to the current estimate... More »

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Centers for Disease Control and Prevention • epidemiology • HIV/AIDS • Federal government • scientific study • AIDS epidemic

 6 Degrees of
 Separation?
 New Study
 Says 6.6 

Microsoft researcher seems to confirm that the world is a pretty small place

Aug 2, 08 12:39 PM CDT
(Newser) - A huge Microsoft study of its Messenger records bolsters the oft-quoted, but never proven, theory of “six degrees of separation"—almost. The study puts the figure at 6.6, but that's still a pretty small world. A Microsoft researcher analyzed 30 billion messages sent among 180 million users... More »

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social networking • Microsoft • instant messaging • Microsoft Live Messenger • scientific study • six degrees of separation

Don't Talk Down to Alzheimer's Patients: Docs

Trouble communicating leads to frustration, uncooperative behavior

Jul 28, 08 8:30 PM CDT
(Newser) - Even after they lose the ability to communicate easily, Alzheimer’s disease patients remain aware of the world around them and know when they're being talked down to, a study shows. Video evidence suggests patients are twice as likely to accept help from caregivers, and to not shut down or... More »

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elderly • dementia • video • scientific study • caregivers • scientific research • Alzheimer's Disease

 Girls=Boys in Math, Says Study

Gender gap discovered in the 1970s has been closed, researchers say

Jul 24, 08 6:00 PM CDT
(Newser) - Girls are just as good as boys at math, says an exhaustive study of 7 million test scores from elementary through high school students, the San Jose Mercury News reports. The findings, to be published tomorrow in Science, are at odds with 30-year-old studies—and a view entrenched in... More »

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high school • college • test score • gender gap • gender stereotypes • scientific study • mathematics

Big Differences Found
in Male, Female Brains

They're apparently based on different genetic blueprints, studies find

Jul 18, 08 10:28 AM CDT
(Newser) - The brains of men and women are so physically different they amount to different organs and may have developed from distinct genetic blueprints, new research shows. Distinct anatomical differences between male and female brains likely explain many well-established differences of perception and behavior between the sexes, from problem-solving strategies to... More »

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serotonin • male brain • frontal lobe • sex drive • scientific study • female brain • hypothalamus • limbic cortex • hippocampus • Centre for the Neurobiology of Learning and Memory • parietal cortex • amygdala

Study Yields More Clues About Autism

Scientists find genes needed for learning stuck in the off position

Jul 10, 08 6:20 PM CDT
(Newser) - Scientists have found six new genes linked to autism, inching closer to a fuller understanding of the disorder and how to treat it, the AP reports. The genes in question are necessary for learning but are essentially stuck in the "off" position. The finding lends credence to the philosophy... More »

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Middle East • autism • DNA • genetic defects • scientific study • neurons • synapse

Brains Get
Noisier as
They Age

Study finds neural complexity generates more cranial static

Jul 10, 08 1:36 PM CDT
(Newser) - Just because you can't hear it doesn't mean your brain isn't making noise. It is, and scientists using high-tech gear to record it have now discovered that it increases as you mature, reports LiveScience. A comparison of noise generated by groups of children and young adults indicates that brain noise,... More »

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memory • schizophrenia • science • neuroscience • noise • scientific study • brain fitness • Alzheimer's Disease

 Frozen Embryos
 Make Bigger Babies 

Study finds no negative effects compared with fresh

Jul 9, 08 1:57 PM CDT
(Newser) - When it comes to in vitro fertilization, frozen might be better than fresh, a new study shows. Infants born after being implanted in mothers' wombs as frozen embryos were no more likely than those from fresh stock to be born with congenital defects, the BBC reports; but they were also... More »

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pregnancy • in vitro fertilization • embryo • infant • Denmark • human embryos • scientific study

 How Do
 They Do It?
 It's Not Pretty 

Want a permanently elastic, balloon-like stomach? Try competitive eating

Jul 3, 08 3:43 PM CDT
(Newser) - For every time you watched a scrawny guy chow dozens of hot dogs in 12 minutes and wondered where, exactly, he puts it, scientists may have your answer. As compared with us mere mortals, the Wall Street Journal reports, a professional’s stomach appears as a “giant balloon... More »

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weird • Takeru Kobayashi • Joey Chestnut • hot dogs • scientific study • stomach • competitive eating • digestion

 Low 'Good' Cholesterol
 Hurts Memory 

Study links low HDL to brain's decline—and possibly dementia

Jul 1, 08 12:27 PM CDT
(Newser) - Low levels of high-density lipoprotein—so-called "good" cholesterol—lead to memory failure and perhaps dementia, a study finds. Researchers followed subjects aged 55-61, and found that patients with low HDL levels were 53% more likely to experience memory loss. "We looked at cognitive decline in midlife, but it... More »

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memory • dementia • cholesterol • memory loss • scientific study • good cholesterol • high-density lipoprotein

 Coffee's Smell Alone
 Can Perk You Up 

Beverage's mere aroma increases wakefulness, study shows

Jun 16, 08 1:19 PM CDT
(Newser) - The aroma of coffee is enough to wake you up, a new study shows. Smelling coffee stimulated the expression of genes known to reverse the damaging effect of stress and sleep deprivation in test animals’ brains, international researchers tell LiveScience. Coffee’s stimulating effects have been known for ages, but... More »

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coffee • caffeine • stimulant • smell • sense of smell • scientific study • scientific research

New Shower Curtains Smell Like Cancer

PVC products linked to wide-ranging and long-lasting ills

Jun 12, 08 5:40 PM CDT
(Newser) - Ever wonder about that smell given off by new shower curtains? Well, according to a new study, it’s poisonous. An independent organization has found that PVC shower curtains on shelves at Wal-Mart, Target, Sears and others may give off measurable amounts of dangerous, volatile organic compounds that could linger... More »

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retail • plastic • public health • Environmental Protection Agency • scientific study • PVC • shower curtain • volatile organic compounds • airborne contaminants • OSHA

 Patch Protects Travelers
 From Pesky Stomach Bugs 

E. coli takes fewer tourists hostage with new development

Jun 12, 08 5:20 PM CDT
(Newser) - Tourists could soon have a new accessory to add to travel-sized toothpaste tubes and electrical adapters: an anti-diarrhea patch. A new US study shows that travelers wearing a “transcutaneous immunization” patch, loaded with E. coli toxins, reliably protected wearers against diarrhea and vomiting, the BBC reports. Those who did... More »

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travel • illness • diarrhea • tourists • scientific study • vomiting • anti-diarrhea patch

Blood Sugar Control Can
Kill Diabetics

Scientists nix study after patients suffer heart attacks, strokes

Jun 6, 08 7:05 PM CDT
(Newser) - Intensive blood sugar control can actually provoke heart attacks and strokes in some diabetes patients, USA Today reports. Scientists canned one US study 4 months ago after high-risk diabetes 2 subjects died more often under aggressive treatment. In another study, blood-sugar control helped their kidneys, but failed to stop heart-related... More »

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drugs • diabetes • United States • heart attack • stroke • type 2 diabetes • scientific study

Dude! Harsh! Weed Shrinks Your Brain

Long-term smokers show abnormalities, damage to emotions

Jun 3, 08 9:09 PM CDT
(Newser) - Heavy marijuana use over a number of years can cause significant brain abnormalities, damage memory and emotional processing, and even shrink parts of the brain, the Age reports. All cannabis smokers—not just high-risk groups such as the young and those susceptible to mental illness—can experience effects equivalent to... More »

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drugs • smoking • brain • marijuana • scientific study • weed

Want a Skinny Kid? Don't Tell Her She's Fat

Chunky teens pushed by parents to diet fare worse than peers

Jun 2, 08 4:18 PM CDT
(Newser) - A new study of obese teens has produced a counterintuitive indication: Parents should under no circumstances tell pudgy youngsters to diet, the Minneapolis Star-Tribune reports. A group of teens correctly identified by parents as overweight and encouraged to diet were more likely to still be chunky 5 years later than... More »

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parenting • children • diet • obese • teen health • scientific study • teenager

Bone Drug Reduces Breast Cancer Relapse

Women on Zometa had 35% less chance of having tumor again

May 31, 08 7:21 PM CDT
(Newser) - A drug designed to protect cancer patients' bones also renders breast cancer relapses less likely, a new study says. Funded in part by the drug's maker, Novartis, researchers found that even two injections of Zometa a year cut tumor recurrence by 35% in more than 1,800 pre-menopausal women. More »

MORE ABOUT:
breast cancer • bone cancer • off label drug use • osteoporosis • Novartis AG • scientific study • Zometa

Big Butts
Are Healthy, Study Finds

Pear-shaped bodies contain fat that could help prevent diabetes

May 7, 08 6:52 AM CDT
(Newser) - The kind of fat found in the hips and buttocks may actually help fight diabetes, a result that surprised Harvard doctors performing the research that produced the finding. Although belly fat is known to raise the risk of diabetes, subcutaneous fat injected into the abdomens of mice actually increased their... More »

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diabetes • public health • scientific study • health study • belly fat • fat cells

 Lousy Figure?
 Blame Mom and Dad 

Another reason to get mad at your parents: body shape is inherited

Apr 9, 08 9:10 PM CDT
(Newser) - Still struggling to get that 36-24-36 figure? Science can’t help you, but it can explain why some girls are leaner than others, reports the Telegraph. Researchers have found a link between parental DNA and female muscle mass, which could explain “why many people will never obtain the perfect... More »

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genetics • DNA • scientists • gene pool • scientist • genetic research • scientific study • muscle mass • scientific research

For Healthier Teens,
Keep the TV in the Den

Older adolescents who watch in their bedrooms pick up bad habits with the remote

Apr 7, 08 12:55 PM CDT
(Newser) - Older teens feeling too fit, well nourished, and smart can turn all that around with one simple move: install a TV in the bedroom. Kids 15 to 18 with a boob tube in the boudoir were twice as likely to watch 5 or more hours a day than those who... More »

MORE ABOUT:
television • health • public health • University of Minnesota • television watching • teen health • scientific study • health study • teenager

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