A new study by Dr. June Stevens of the University of North Carolina at Chapel Hill found that excess body weight increases the risk of death from heart disease and other causes up to late life, with optimal weight found at a body mass index (BMI) of 19-22 until age 75.
Researchers have discovered a new genetic variation that increases the risk of developing Alzheimer's disease. The study found that changes in the APOE gene can lead to higher levels of beta-amyloid, contributing to the development of senile plaques in the brain.
The second Dynamics Days international conference will bring together experts in chaos, nonlinear dynamics, and complex systems to share their research. Speakers will discuss topics such as internet storms, animal coordination, extinction causes, and pattern formations.
As baby boomers age, their stepchildren and stepgrandchildren may take on increased caregiving responsibilities, expanding the pool of family members who can provide support. The analysis suggests that traditional views of support ratios for retirement and long-term care may need to be reconsidered.
Researchers found increased levels of butyrylcholinesterase (BChE) in brains with compact and insoluble beta-amyloid plaques, a hallmark of Alzheimer's disease. BChE may play a role in transforming benign amyloid protein deposits into the disease-causing plaques.
Researchers discovered a simple mechanism of aging in yeast cells, where extrachromosomal ribosomal DNA (ERCs) replicates until the cell dies. ERCs' accumulation causes enlargement and fragmentation of the nucleolus, leading to cell death, suggesting a potential target for intervening aging processes.
Researchers found that making optimal use of backup agreements between catalogers and manufacturers can increase net cash by almost 50%. The strategy, tested on a multibillion-dollar retail giant, is applicable to various industries with seasonal demand fluctuations.
Researchers have identified a new molecular switch that triggers mismatch repair in cells, which can prevent colon cancer. The discovery provides a foundation to specifically target anticancer drugs to this gene.
Astronomers have found far more dwarf galaxies than expected in a survey of just 2% of data from the Parkes radio telescope. The discovery suggests that dwarfs may be 'crumbs' left over when bigger galaxies formed and could provide clues about the distribution of dark matter.
Researchers argue that CDC's revised guidelines, which favor local decision-making, may not adequately address the environmental threat of lead poisoning in children. They contend that modestly elevated blood lead levels can have irreversible effects on neurocognitive development.
A new study by University of Washington researchers found that commitment is a crucial factor in keeping New Year's resolutions. The study, which surveyed over 264 subjects, found that people who made strong initial commitments and had coping strategies were more likely to succeed.
Alcohol abuse contributes to major causes of death among college-age persons. Raising the drinking age has saved 16,500 lives in traffic crashes since 1975. Comprehensive community interventions involving public officials, private citizens, and student participation can further reduce alcohol-related problems.
The Native American health care sector is grappling with formidable challenges, including inadequate funding and limited resources. A survey of 85 leaders found that recruitment and retention of professional staff, as well as contractual issues with the US Department of Health and Human Services, are major concerns.
Researchers at the University of Pittsburgh have constructed a novel delivery system for gene therapy of liver disorders, using a reconstituted chylomicron remnant (RCR) that can safely transport genes to target cells. The system has resulted in extended production of therapeutic proteins in animal models.
Computer scientists at Washington University in St. Louis have developed processes that enable internet address lookup to be done at a speed of 100 nanoseconds, compared to the current average of 1.2 microseconds. This promises to give routers faster throughput by making it easier to find destination addresses for messages.
A new program using free phone counseling has shown to improve social contact and reduce symptoms of depression in seniors identified as suicide risks. After four months, clients reported significant improvements in daily living challenges and life situations.
A long-term study found that post-menopausal women who used estrogen replacement therapy performed better on visual memory tests than those who didn't receive treatment. The researchers also found that stable memory performance was maintained by some participants who began ERT during regular visits to the NIA.
University of Wisconsin-Madison experts conduct detailed surveillance on H5 influenza, a deadly strain found in birds that has infected eight people and killed three. The study aims to identify the source of the virus, test for genetic variation between bird and human strains, and determine potential public health risks.
Research by Joanne Schneider found that women who interpret their exercise experience positively tend to exercise more often, intensely, and for longer periods. In contrast, those who focus on bodily movements report exercising less often, less intensely, or for shorter periods.
Researchers found that oral administration of a steroid hormone boosts circulating leptin levels in humans, with higher levels observed in obese individuals. The study suggests that overweight people still have leptin reserves and may benefit from high-dose leptin therapy.
Researchers at Stanford University found a 28.4-day cycle in solar neutrinos using data from the Homestake neutrino detector. The discovery challenges the standard model of particle physics and may help explain the universe's missing mass, with neutrinos potentially playing a key role.
In 1997, scientists made significant discoveries in cloning, with the cloning of Dolly sparking debate on ethics and potential benefits. The year also saw major breakthroughs in Mars exploration, gamma ray bursts, and advances in genetic understanding, including the identification of clock genes and microbial genomes.
Researchers found leptin in human breast milk, which correlates with the amount of body fat in lactating mothers. The hormone may play a role in infant development and potentially influence weight gain or obesity later in life.
African and Asian macaques' complicated lineages have been unraveled by genetic detective work at Columbia University. The study confirms that the genus is one of the oldest among Asian monkeys, dating to at least 7 million years ago.
Scientists have found that exposure to Pfiesteria toxin can cause significant learning deficits in rats, impairing their ability to learn new tasks but not memory recall. The study's findings suggest a growing human health concern and hazard to marine estuaries along the Atlantic coastal waters.
Researchers create first commercially available catalytic antibody, which can catalyze aldol reactions with broad substrate range. This breakthrough addresses long-standing question of protein-catalyst efficiency.
The images taken by the Near Earth Asteroid Rendezvous (NEAR) spacecraft reveal a cratered surface and porous composition of asteroid 253 Mathilde. Scientists were surprised to find large craters packed tightly on the relatively small surface, indicating that large objects can strike without destroying it.
Researchers from Case Western Reserve University have successfully regenerated axons in adult rat brains using transplanted nerve cells. The study's findings suggest a potential for regeneration in the adult central nervous system, offering new hope for treating neurological disorders.
Carpooling expert Dorothy Singer offers practical advice on how to create a safe and enjoyable experience for children. Key tips include planning games, explaining rules, and prioritizing safety above all.
A team of scientists is tracking El Niño changes using a remote cloud observatory in the Western Pacific. Continuous measurements are being collected to evaluate and develop cloud property and radiation algorithms for global climate models.
A study conducted at the University of Michigan Health System found that administering amiodarone prior to elective heart surgery reduced atrial fibrillation by approximately 50%. Patients who received amiodarone experienced less discomfort, shorter hospital stays, and lower hospital costs compared to those who received a placebo.
Researchers discover two related versions of the LOV domain in a plasma membrane protein, which shares significant similarity with domains from various organisms. The LOV domain may play a crucial role in regulating the phototropic response and other cellular processes.
A recent study found that risk factors for HIV infection among married women in India include having a sex partner with a sexually transmitted disease. The researchers discovered a significant correlation between HIV transmission and the cultural norm of not discussing sexual behavior, emphasizing the need for accessible STD prevention...
Using heat-resistant microbes, researchers can treat waste air and water emissions at temperatures up to 70 degrees Celsius. The new process eliminates the need for cooling, saving companies time and money while reducing environmental impact.
Scientists have discovered a new bacterium, Photorhabdus luminescens, with a toxin effective against a broad range of insect pests. The bacteria can be used as a spray or fed directly to insects, and its genetic material has been licensed for use in crop plants.
A study published in the Journal of the American Medical Association found that certain symptoms like fever, joint pain, and night sweats can identify people with recent HIV infection before a positive blood test. The researchers screened over 3,800 patients and found that those with these symptoms were more likely to have the virus.
Researchers at Case Western Reserve University have discovered that epigallocatechin-3-gallate, a green tea compound, can induce programmed cell death in cancer cells without harming healthy cells. This finding offers new hope for cancer prevention and treatment, and may lead to the development of purified polyphenolic derivatives.
A study published in the Journal of the American Medical Association found that diabetic men are at a 13 times higher risk for end-stage renal disease (ESRD) compared to non-diabetic men. Diabetic men were also four times more likely to develop ESRD attributed to non-diabetic disorders such as high blood pressure or kidney infection.
Researchers at Northwestern University Medical School found that resveratrol in red wine is a form of estrogen with cardioprotective properties. Moderate consumption of red wine may reduce cardiovascular disease risk due to its resveratrol content, which activates estrogen receptors and increases HDL cholesterol.
Researchers use numerical simulations to show connection between Earth's changing shape and gravitational effects of other bodies in the Solar System. The study reveals that changes in the Earth's axial tilt can produce large changes in climate.
The Pennsylvania Sea Grant will focus on extension, education, and communications, monitoring the ecology of Lake Erie's coast and Presque Isle peninsula. Studies will address non-point source pollution, invasive species, and environmentally friendly manufacturing development.
Researchers have identified 80% of the genes active in the cardiovascular system, creating a comprehensive database that sheds light on the genetic mechanisms underlying cardiovascular disease. The study's findings have significant implications for understanding complex diseases and developing new diagnostic tests and therapies.
Researchers discover new protein AD7c-NTP significantly elevated in brain tissue of people with Alzheimer's disease, even in early stages. The protein's presence suggests a possible role in the disease's progression and potential as a diagnostic tool.
Recent studies have identified key risk factors and clinical symptoms associated with acute HIV infection in India, particularly among commercial sex workers. The findings highlight the importance of p24 antigen screening to detect infections early, reducing the accuracy of previously described signs and symptoms., Condom distribution ...
A national survey by MTV and Yale University finds that nearly 9 out of 10 young people (87%) believe they are invulnerable to getting the AIDS virus, despite high-risk behaviors such as unprotected sex. The study highlights a need for accurate health information and education, particularly among marginalized groups.
A new study using optical imaging reveals that brain cells engaged in different tasks form mosaics with remarkable order and elegance. The research may assist in the development of artificial vision systems.
Researchers discovered atom-sized electronic devices on nanotubes, which can conduct electricity like metals or act as semiconductors. This breakthrough may lead to smaller, more efficient devices and reduce heat-related issues.
Anabolic steroid use has significantly increased among teenage girls, doubling since 1991, whereas among adolescent boys it has remained nearly unchanged. This trend is attributed to various factors such as the emphasis on physical appearance and competitiveness in sports.
A study of 1,300 students in New Hampshire and Vermont reveals a strong link between owning promotional gear and increased smoking risk. Children who owned such items were four times more likely to smoke than those without them.
Chronic illnesses account for three quarters of healthcare costs. The article proposes a team-based approach to care, prioritizing collaboration between patients, physicians, and their families. This approach aims to enhance self-care and medical care by targeting specific problems and providing personalized support.
NASA's Burst and Transient Source Experiment (BATSE) has recorded its 2000th gamma-ray burst, a significant milestone in the study of these violent cosmic events. The 2000th burst was smaller than average, but adds to the growing body of knowledge about gamma rays and their origins.
A genetic map of dogs was constructed using 150 microsatellite markers, revealing the organization of genes and traits on the canine genome. The study has significant implications for understanding human diseases such as cancer, epilepsy, and bleeding disorders.
A survey of consultation-liaison psychiatrists found that they strongly opposed participating in or endorsing physician-assisted death. However, there was more acceptance of referrals to other physicians and their involvement. The study suggests that requests for assisted death are often linked to depression, a treatable illness.
The study found that fraternity leaders reported the highest rates of binge drinking and adverse consequences, including hangovers, arguments, and blackouts. Greek leaders also tend to view alcohol as a facilitator for social interaction and sexuality, contrary to expected moderate views.
Researchers identified a specialized protein that catalyzes conformational change of mitotic proteins, allowing correct exit from mitosis. This finding has significant implications for understanding and developing anti-cancer agents targeting this mechanism.
Researchers have crystallized the active form of adenylyl cyclase, revealing how Gs-alpha binds to and activates it. This discovery helps understand the regulation of these enzymes, which are crucial for various biochemical processes.
Research by Stanford University finds that L.A. smog's filtering effect reduces both UV radiation and ozone levels, benefiting skin cancer prevention and respiratory health. The study identifies specific chemical compounds in smog as responsible for this phenomenon.
A University of Michigan model reveals that carbon and sulfur emissions can cool the planet by up to -4.4 Wm-2, potentially offsetting human-caused warming. However, the models' uncertainty due to poorly known estimates for natural aerosol sources may limit the findings.
Geologist Professor Joseph Smyth discovered wadsleyite can contain solid water bound in crystals at extreme pressures. The earth's interior may store large amounts of water in the form of wadsleyite, which could regulate surface water levels. Laboratory tests are underway to determine the amount of water in wadsleyite.
The American Institute of Physics announces a new award for broadcast media, recognizing distinguished writing that improves public understanding of physics and astronomy. The winning author will receive $3,000 and a certificate.