The African cheetah's migration from North America was costly, resulting in a reduced gene pool and increased inbreeding rates. The species' genetic variation has been severely impacted, with only 90-99% of its original diversity remaining.
Researchers found that feral cats in Australia originated from European settlers' pets, introducing a damaging invasive species. The study's findings have implications for managing invasive species, as they determined a specific time frame for cat introduction linked to native species decline.
Since Angelina Jolie's announcement, the number of preventative double mastectomies performed at a Manchester clinic more than doubled from January 2014 to June 2015. The increase is attributed to heightened awareness of the procedure, with many women citing Jolie as an inspiration for their own surgeries.
Adelie penguins' population has seen a 135-fold increase over the last 14,000 years due to retreating glaciers. However, regional variability means some populations are declining despite current favorable environmental conditions.
A study published in the journal Biology of Sex Differences found that over half of female methadone clinic patients reported doctor-prescribed painkillers as their first contact with opioid drugs. The study highlights the importance of considering gender differences in treatment options for opioid addiction. Researchers noted that wom...
In a study published in Animal Cognition, researchers found that captive elephants blast air through their trunks to obtain inaccessible food, revealing an advanced understanding of their physical environment. The dominant female, Mineko, was more proficient in adjusting her trunk to target the air and push food towards her.
Researchers have identified a single gene, TLE6, responsible for human embryonic lethality at an earlier stage of development than previously documented. The mutation impairs the binding of components of the sub-cortical maternal complex, leading to arrest in early embryonic development.
A new study reveals that internationally produced films are more likely to depict characters smoking on screen compared to those made in Hollywood. The research found that up to 97% of films worldwide showed some level of tobacco or alcohol consumption, with a higher prevalence in European and Latin American productions.
A large-scale study found that women who gave birth at a younger or older age, breastfed, or used oral contraceptives had a reduced risk of death. The researchers suggest hormonal mechanisms may explain these associations, and further studies are needed to confirm the findings.
A study published in Microbiome found that Actinobacteria, a type of bacteria associated with human skin, made up a larger proportion of the microbial community in the ISS than in Earth cleanrooms. Opportunistic pathogens were also present in the ISS dust samples, but the risk of infection to astronauts remains unknown.
A study has revealed that domesticated cattle have a more complex ancestry than previously thought, with some breeds sharing genetic similarities with ancient British aurochs. The discovery sheds new light on the evolutionary history of European cattle breeds.
The study reveals that vultures have a strong immune system due to their diet and genetic adaptations. The cinereous vulture's genome shows variations in genes related to immunity and defense against microbial and viral infections, which may help combat pathogens in their diet.
Research suggests extending flu vaccine administration to 5-16 year old children is the most cost-effective option, reducing disease burden in the general population. Universal vaccination of all low-risk individuals over 2 years could achieve the highest net benefit.
A new study published in BMC Medicine found that dying at home is associated with a similar amount of pain compared to hospital deaths, and reduced grief for relatives. The study highlights the importance of access to comprehensive home care packages and facilitation of family caregiving.
Research published in BMC Evolutionary Biology suggests that climate change could have a positive impact on Swedish sand lizard populations by allowing them to lay eggs earlier. This shift enables the females to better adapt to warming temperatures and improve the fitness of their offspring.
A new study reveals a substantial increase in 'predatory' open access journals, with nearly eightfold growth since 2010. The majority of authors come from Africa and Asia, and prefer lower article-processing charges.
Researchers found a 5% improvement in peer review report quality when articles underwent open peer review compared to single-blind models. Author-suggested reviewers also tended to recommend acceptance more often than non-author suggested reviewers.
A recent study found that some health apps, despite being clinically-accredited, were transmitting unencrypted personal and health information, compromising user privacy. The study reviewed 79 apps listed on the UK NHS Health Apps Library and found 23 sent identifying info over the internet without encryption.
A participant with complete paralysis regained walking ability using a brain-controlled system that utilizes electroencephalogram signals. The study, published in Journal of NeuroEngineering and Rehabilitation, demonstrates the feasibility of non-invasive leg muscle stimulation using direct brain control.
A large meta-analysis of four studies involving nearly 250,000 individuals found no association between moderate coffee consumption and increased risk of atrial fibrillation. The study's results suggest that people who like coffee can safely continue to consume it in moderation without the risk of developing this condition.
Researchers discovered that chameleons have twice the number of wrist and ankle skeletal elements than previously thought, enabling greater rotation and flexibility. This adaptation allowed species to leave ground cover and occupy trees, revolutionizing their climbing ability.
A large study found that adhering to healthy dietary patterns such as the Mediterranean diet was associated with a reduced risk of depression. The Alternative Healthy Eating Index-2010 was also linked to a significant reduction in depression risk, although this effect may be explained by similarities with the Mediterranean diet.
A gene signature associated with 'healthy ageing' has been identified, allowing for early prediction of age-related diseases like Alzheimer's. The discovery provides a reliable molecular profile for distinguishing people at risk and could transform medical decision-making.
A newly discovered species of eurypterid, a giant 'sea scorpion', has been found in Iowa, measuring over 1.5 meters long and dating back to 460 million years ago. The fossil provides unique insights into the anatomy and behavior of these ancient predators.
Research reveals a significantly larger-than-estimated chimpanzee population in Uganda's fragmented habitats, with populations of up to 319 individuals found across 633 km2. The study suggests that chimpanzees' adaptability and behavioral flexibility enable them to survive in degraded environments.
Researchers developed a faster method for classifying benign and malignant human breast tissues using fresh samples. This automated method eliminates the need for time-consuming tissue preparation and specialist assessment, potentially improving breast cancer management in developing countries.
A systematic review and meta-analysis of 32 studies found that male doctors are more likely to have legal action taken against them. The researchers analyzed data from over 4 million cases of medico-legal action and found consistent differences between sexes across various years and study types.
Research suggests that stripes do not provide an advantage for animals living in groups when multiple targets are presented simultaneously. This contradicts the long-held assumption that stripes evolved to make it difficult for predators to capture animals moving in a group.
Black men in England face a double lifetime risk of being diagnosed with and dying from prostate cancer compared to their white counterparts. The study reveals that Asian men have half the lifetime risk, highlighting the need for targeted awareness-raising and informed decision-making about PSA tests.
The kiwi bird's genomic changes help explain its unique characteristics, such as eliminated color vision and a highly developed sense of smell. Research identified evolutionary changes in the genome that underpin the bird's adaptations to nocturnality, with potential implications for conservation efforts.
Researchers found that nematode worms commonly inhabit slugs, woodlice, and centipedes, using them as public transport to find new food sources. The worms survive inside slug intestines and are excreted alive, suggesting a potentially harmless but also possibly parasitic association.
Researchers found that spiders adopt postures to control wind direction while on water, allowing them to 'sail' in turbulent conditions. This behavior compensates for the risks of landing on water after uncontrolled flights, enabling spiders to survive in aquatic environments.
A recent study published in Research Involvement and Engagement found that research on treatments for health problems like diabetes and schizophrenia is not focused on the most important treatments considered by patients and clinicians. The study reveals marked differences between the types of treatments highlighted as priorities by pa...
Researchers have identified a new potential culprit in colon cancer, Providencia, and found a single signature of colon cancer in the gut microbiome. This discovery could help doctors predict prognosis and identify bacterial changes that affect patient health.
A systematic review found that sedentary behavior is associated with an increased risk of anxiety in adults and children. The link may be due to disturbances in sleep patterns, social withdrawal theory, and poor metabolic health. Further research is needed to confirm the causal relationship between sedentary behavior and anxiety.
Research published in BMC Evolutionary Biology found that male nightingales' songs contain specific features, such as repeated song sequences and varied song types, which signal their ability to care for offspring. These song features are linked to greater paternal efforts, including more frequent feeding and defense of the nest.
A clinical pilot study found that using virtual reality to enhance movement and increase confidence in the affected limb significantly improves spontaneous use of the paralyzed arm. This suggests an alternative focus on increasing patient confidence may be critical for full recovery.
Domestic cats have a unique perception of bitterness in food due to variations in their repertoire of bitter receptors, which differs from that of other mammals. The study found that cat taste receptors were less sensitive to certain bitter compounds compared to human receptors, explaining why cats can be picky eaters.
A UK study found that 1.1 million children live with at least one smoker parent, and an additional 400,000 would be in poverty if tobacco expenditure is subtracted from household income. This highlights the financial burden of smoking on low-income families.
Researchers found four essential genes that were lost from the human Y chromosome but relocated to other chromosomes, including one gene crucial for sperm production. These findings suggest a complex role of sex chromosomes in genetic function and may contribute to male infertility.
A new study published in BMC Medicine found that people in England consume an additional 12 million bottles of wine each week due to holidays and special occasions. This increase in alcohol consumption can lead to health issues, highlighting the need for more accurate measurement and targeted interventions.
Researchers have reconstructed the ancestral snake, revealing it had tiny hindlimbs and targeted soft-bodied prey. The study suggests snakes originated on land, rather than in water, during the middle Early Cretaceous period.
Research published in Molecular Autism found that male toddlers with autism have distinct brain structure changes compared to females, suggesting separate evaluation and early developmental markers. Additionally, studies suggest a 'female protective effect' through sex differences in genes and prenatal hormones.
Researchers found that microbial communities on shoes closely resemble those on the floor, suggesting strong transfer between the two. Cell phone microbial signatures were less stable due to rapid community turnover. The study's findings have potential applications in forensic analysis.
Following a healthy lifestyle, including diet and physical activity guidelines, is associated with improved survival when diagnosed with bowel cancer. A large study of over 500,000 participants found that men with a high lifestyle score had a lower risk of mortality, while women who breastfed also showed increased survival.
A vaccine targeting the viral protein Tat shows promise in boosting an HIV-infected patient's immune system, increasing CD4+ T cell count and reducing latent virus DNA load. The results suggest a new treatment scenario to investigate intensified antiretroviral therapy with a vaccine.
A study found that humans are more commonly afflicted with spinal disease due to their unique vertebrae shape, which shares similarities with non-human primates. Researchers studied human, chimpanzee, and orangutan vertebrae to uncover the link between vertebral shape and disc herniation.
The study provides insights into the genetic basis and evolution of bumblebee biology, including their social living, coping with chemicals, and diseases. The findings suggest that the immune system of bees has remained largely the same since before the origin of bee sociality.
A systematic review of cigar smoking and all-cause and smoking-related mortality found that cigar smoking carries the same fatal health risks as cigarette smoking, including oral, esophageal, and lung cancers. The risk of death from these cancers increases with inhalation of cigar smoke.
A study found that the PIK3CA gene mutation, previously thought to be a promising target for breast cancer treatment, may not drive the disease. Instead, it appears to be associated with benign proliferation. This new information will impact future drug development and replication studies.