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130,288 articles from ScienceDaily

Breaking Up Is Hard To Do

"Breaking Up is Hard to Do" is advice from a popular 1970s song, but older women going through a relationship breakup may have health problems to go along with their broken hearts, according to researchers. Older women going through a relationship breakup may have health problems to go along with their broken hearts when they return to the dating scene. These singles are also finding a new place...

New Mechanism In Development Of Severe Inherited Disease Discovered

Scientists have shown that the genetic defect that causes Cockayne Syndrome affects a key function of the cell - the transcription of genes coding for ribosomal RNA. Cockayne Syndrome is a recessively inherited disorder that belongs to a group of diseases in which defects in one of the numerous DNA repair systems lead to non-functioning proteins and, thus, to severe health impairments. These...

River Blindness Parasite Becoming Resistant To Standard Treatment

Recent reports of patients failing to respond to ivermectin, the standard drug for treating river blindness (onchocerciasis), have suggested the emergence of drug-resistant Onchocerca volvulus (the parasite that causes river blindness). According to a new study Ivermectin is causing genetic changes in the parasite.

Children Stressed Six Months Before Starting School

The first few days at school can be an anxious time as children face the challenge of a new environment and making new friends but according to new research children show signs of stress three to six months before term even starts. Why a preschool child should be anxious about an event so far in the future is something of a mystery but the scientists speculate that parents were getting stressed...

Small Animal Imaging Facility Is Big Boon To Research

When powerful magnets line up the body's protons before radiofrequency waves can grab their attention away, it's called spin physics. When signals generated by the movement are mathematically transformed into dramatic images of hearts, lungs and other organs it's called a magnetic resonance image.


WEDNESDAY 5. SEPTEMBER 2007


Despite Their Safety, IUDs Are Underused In Developed Countries, Expert Says

Misconceptions around intrauterine contraceptive devices mean that they are underused in developed countries, despite being a safe and effective form of contraception, says a women's health expert. Side effects such as pain and heavy bleeding are common reasons for discontinuing use of an IUD within the first year, but can usually be managed with appropriate pain relief.

Chemical Culprit In 'Popcorn Worker's Lung' Identified

Researchers have identified a chemical agent that may be a, if not the, culprit in bronchiolitis obliterans syndrome (BOS), or "popcorn worker's lung," a severe occupational lung disease first noted in 2001 among workers at an American plant that makes microwaveable popcorn. The research examined a population of workers at a chemical plant that produced diacetyl (a key component of butter...

How Much Will You Pay To Live Near People Like You?

Using restricted-access Census data, a new study examines a quarter-million households on a block-by-block basis to yield new results about the correlation between household attributes and school quality. The researchers find that, conditional on income, households prefer to self-segregate on the basis of both race and education.

Poor Indoor Air Quality Means Poorer Health For Patients With COPD

Poor indoor air quality can significantly worsen health problems in people with chronic obstructive pulmonary disorder, according to a recent article. High concentrations of fine particulate pollution -- the type of pollution associated with secondhand smoke and, in developing countries, indoor cooking and heating fires -- were strongly linked to poorer health status.

Underage Drinking Starts Before Adolescence

As schools reopen around the country, a new study finds that parents and teachers should pay attention to alcohol prevention starting as early as fourth grade. A review of national and statewide surveys conducted over the last 15 years shows that among typical 4th graders, 10 percent have already had more than a sip of alcohol and 7 percent have had a drink in the past year. The surveys also show...

Field Museum To Return Human Remains To New Zealand

A delegation from New Zealand will arrive in Chicago September 3 to take the human remains of at least 14 Maori individuals back to New Zealand, accompanied by two Field Museum curators and seven representatives of Chicago's American Indian Center. A repatriation ceremony will be held September 10 at the Museum of New Zealand in Wellington, New Zealand. The remains include bones, such as mandibles...

New Insights Into Common Knee Injuries

The sort of swelling that occurs when a joint is damaged by injury or degeneration is normally essential to the healing process, but when it comes to the knee, that inflammation can actually interfere with healing. These findings in experiments with pigs may lead to treatments for injuries or osteoarthritis in the knee, according orthopedic researchers. There are drugs that can block the action of...

New Technique Detects Specific Chromosomal Damage, May Indicate Lung Cancer Risk

A new technique could pave the way toward screening people at risk for lung cancer for the genetic changes that may foreshadow malignancies, according to a new article. Lung cancer is the leading cause of cancer deaths in the U.S., and kills more people than the next three most common cancers--colon, breast and prostate--combined. While it is well-established that smoking is the primary risk...

Breeders Fortifying Wheat With Consumers In Mind

Wheat breeders are working to put a "little muscle" into bread, in addition to helping producers get better yields, said a Texas Agricultural Experiment Station researcher. Bread producers need stronger gluten flours, according to one wheat breeder. Gluten is the protein in wheat that allows bread to expand and hold the shape.

Fighting Malaria By Tricking Mosquito's Sense Of Smell

By mapping a specialized sensory organ that the malaria mosquito uses to zero in on its human prey, researchers have taken an important step toward developing new and improved repellents and attractants that can be used to reduce the threat of malaria, generally considered the most prevalent life-threatening disease in the world.

Neurotransmitter Current Not Flowing Through Ion Channels

In studying how neurotransmitters travel between cells, Cornell researchers have discovered that an electrical current thought to be present during that process does not, in fact, exist. The scientists explained that neurotransmitters and hormones are stored in neurons -- nerve cells -- in small packets, membrane-bound vesicles, typically 30 to 300 nanometers in diameter. When a cell is stimulated...

One-fourth Of HIV Patients Believe Their Doctors Stigmatize Them

Physicians might want to be extra careful about how they treat HIV-infected patients --not just in the clinical sense but in the way they behave toward them. Even the perception that physicians are stigmatizing patients for carrying the virus that causes AIDS can discourage these individuals from seeking proper medical care, according to a new study.

Who Will Recover Spontaneously From Hepatitis C Virus Infection?

Twenty to fifty percent of HCV infected patients recovers spontaneously. Scientists have investigated 67 spontaneously recovered patients and found that co-infection by hepatitis B virus is associated with a higher possibility of self recovery. In addition, patients who self recovered usually have lower levels of HCV antibody. But on the other hand, the researchers also found that active IV drug...

Eco-tilling Detects Herbicide Resistance Early

A new molecular tool to help farmers address one of the major threats to conventional agricultural practices -- herbicide resistance -- has just been developed. More than 305 types of weed in more than 50 countries have been reported to be resistant to at least one herbicide, and an increasing number of weeds owe their success to their genetic diversity. Scientists say techniques are needed to...

Factors That Accelerate Resistance To Targeted Therapy In Lymphoblastic Leukemia Found

New results explain why the targeted therapy drug, imatinib, or Gleevec™, which has revolutionized the treatment of chronic myelogenous leukemia, (CML) is often unable to prevent relapse of a particularly aggressive form of acute lymphoblastic leukemia (ALL). Targeted therapy drugs are designed to block the activity of a specific molecule, a strategy aimed at making treatments more effective...

Investigating The Evolution Of Drug Resistance In Malaria Parasites

Scientists hope to understand how the malaria parasite Plasmodium falciparum evolved resistance to the once-effective medication chloroquine. They have about 11,000 archived human blood samples from malarious regions of the Pacific collected from the 1950s to the present. The samples will be analyzed and researchers will document the accumulation of genetic changes that resulted in chloroquine's...

You're Likely To Order More Calories At A 'Healthy' Restaurant

A new study explains the "American obesity paradox": the parallel rise in obesity rates and the popularity of healthier food. In a series of four studies, the researchers reveal that we over-generalize "healthy" claims. In fact, consumers chose beverages, side dishes, and desserts containing up to 131 percent more calories when the main dish was positioned as "healthy."

'Alien' Jaws Help Moray Eels Feed

Moray eels have a unique way of feeding reminiscent of a science fiction thriller, researchers have discovered. After seizing prey in its jaws, a second set of jaws located in the moray's throat reaches forward into the mouth, grabs the food and carries it back to the esophagus for swallowing.

A Dog In The Hand Scares Birds In The Bush

New research showing that dog-walking in bushland significantly reduces bird diversity and abundance will lend support to bans against the practice in sensitive bushland and conservation areas. Until now, arguments and debate about the ecological impacts of dog-walking have remained subjective and unresolved because experimental evidence has been lacking.