A study found that city-dwelling blue tits lay larger eggs than forest-dwelling birds, likely due to the urban environment's higher calcium availability. The researchers also observed a trade-off between egg size and clutch number, with urban birds producing fewer but larger eggs.
Researchers discovered termite populations with all-female colonies that can successfully reproduce and maintain social order without males. Queens in these colonies had empty spermathecae, indicating no fertilization of eggs.
A new study found that Airbnb rental properties in US cities are distributed based on factors such as the number of residents working in creative industries, average household income, and distance to public places of interest. The researchers built a predictive model that could help regulators create policies for short-term rentals.
A systematic review found that middle-aged drinkers with no drinking problem have minor or non-existent health concerns about their drinking behavior. Factors such as respectability, gender, and social influences play a significant role in shaping their attitudes towards drinking.
Researchers found employees with a criminal record stayed in their sales or customer service roles on average 19 days longer than those without. They also discovered that some employers may benefit from hiring workers with a record, as these individuals can provide valuable labor for less cost.
Researchers discovered that clownfish ancestors had three white stripes, which later evolved into different stripe patterns in individuals from various species. The study found that some species acquire more stripes as juveniles than they do as adults, and that a decrease in iridophores inhibits stripe formation.
A study published in Frontiers in Zoology found that traffic noise may contribute to aging in Zebra finches, with birds exposed after fledging having shorter telomeres. The researchers suggest that this period is critical for song learning and development, making birds more sensitive to noise.
Research suggests that moderate drinking within recommended guidelines may have a cardioprotective effect, but unstable patterns over time increase the risk of coronary heart disease. Consistency is key, and lifestyle changes, such as retirement, may also play a role in differing risks.
A study of 35,132 individuals found that unstable drinking patterns over time may increase heart disease risk, while consistent moderate drinking within recommended guidelines may have a cardioprotective effect. Consistency in drinking behavior is crucial for reaping the benefits.
Researchers found that naked mole-rat breeders have changed aging rates, living longer than non-breeders due to higher resistance to muscle loss during aging. The study suggests that genetic mechanisms underlying social suppression of sexual maturation may contribute to their exceptional lifespan.
A study published in BMC Zoology found that ant soldiers have smaller brain sizes than workers despite being larger, as their tasks place less cognitive demand. This suggests that investment in brain development may be reduced for individuals with simpler behaviors.
A study of 12,372 students across seven European countries found that excessive social media use is linked to higher rates of cyberbullying. The researchers suggest that digital literacy and internet safety strategies may contribute to lower rates of cyberbullying.
A study published in BMC Evolutionary Biology found that Bale monkeys living in different habitats have distinct mitochondrial DNA profiles. The researchers discovered that populations from fragmented forests were more closely related to vervet and grivet monkeys than those from continuous forests, suggesting hybridization had occurred.
A study published in Microbiome found that maternal diet during pregnancy can influence the infant gut microbiome, with varying effects depending on delivery mode. Vaginal delivery was associated with a higher abundance of Bifidobacterium and Enterobactericeae, while caesarean section was linked to increased Streptococcus and Clostridium.
A study of 5,366 US flight attendants found a higher lifetime prevalence of breast, melanoma, and non-melanoma skin cancers compared to the general population. The authors suggest that factors such as circadian rhythm disruption and exposure to cosmic ionizing radiation may contribute to these increased cancer rates.
Researchers at the Royal Museums of Fine Arts of Belgium and the University of Liège used high-resolution photography, X-ray radiography imaging, and X-Ray Fluorescence spectroscopy to analyze a recovered quarter of the painting and propose a virtual colorization. The study found that the deepest blue layer in the painting is presumed ...
A large Korean study found that sleeping fewer than six hours a day is associated with an increased risk of metabolic syndrome and its components, including higher waist circumference and triglycerides. The study also showed a potential gender difference, with long sleep linked to metabolic syndrome in women and short sleep in men.
A new index identifies individuals at risk for lupus by analyzing IgG, IgM antibodies and C1q levels in blood serum. The findings could help follow at-risk individuals and diagnose early lupus cases.
A recent study published in BMC Medicine found that the negative effects of screen time on cardiovascular disease, cancer incidence, and mortality are more pronounced in people with lower levels of fitness and physical activity. Increasing strength and fitness may offset these risks, suggesting a targeted approach to reducing screen ti...
A recent UK study found that French Bulldogs are prone to various health conditions, with ear infections, diarrhea, and conjunctivitis being the most common. The research also suggests that male French Bulldogs may be less healthy than females, highlighting concerns about the breed's welfare due to its extreme physical features.
A study published in Critical Care found that blood type O patients had a death rate of 28% after severe trauma, compared to 11% for patients with other blood types. The researchers suggest that lower levels of von Willebrand factor may be linked to higher hemorrhage rates and increased mortality.
A study found that media coverage on cancer rarely addresses the importance of age as a risk factor, resulting in under-representation of older adults. This can lead to a lack of awareness, delayed detection, and poorer outcomes for this population.
A recent study published in Molecular Autism found that pediatrician Hans Asperger cooperated with the Nazi regime and referred profoundly disabled children to a clinic involved in child euthanasia. The research challenges the long-held narrative of Asperger as an opponent of the Nazi regime.
A large group of common bottlenose dolphins was recorded in Canadian Pacific waters, the first confirmed occurrence in this area. The sighting suggests that these warm-water species may naturally range into British Columbia, Canada when conditions are suitable due to warming trend.
Researchers found that dogs have a more similar gene content to humans than previously thought, with changes in diet affecting both species' gut microbiota. The study suggests dogs could be used as models for human nutrition studies, providing insights into the impact of diet on obesity and overall health.
Global rates of mental disorders among children remain stable, with prevalence high and constant across emerging regions. Mental disorders surpassed infectious diseases as main causes of disability-adjusted life years (DALYs) in children, according to a new study.
An independent review suggests that on-site pill testing could reduce fatalities from 'party drugs' like ecstasy and methamphetamines by providing information on their quality and purity. The author argues that pragmatic initiatives like pill testing are needed to replace criminal justice responses.
A study published in EPJ Data Science found that fiction books, especially those with high initial sales numbers, are more likely to become bestsellers. Non-fiction titles, however, are more likely to retain their bestseller status once achieved.
A study of 5293 US adults found that smokers consumed around 200 more calories a day than non-smokers or former smokers, despite eating smaller portions. Smokers' diets were also high in energy density, meaning they consumed food with fewer nutrients and potentially increased risk of cardiovascular disease and cancer.
A study published in BMC Evolutionary Biology found that rival sperm competition makes ant sperm better swimmers, increasing their mobility, speed, and straightness by up to 50%. Researchers discovered that seminal fluid from rival males and queen secretions enhance sperm motility, suggesting a self-non-self-recognition mechanism.
Research published in BMC Public Health found an association between increased social media time and reduced wellbeing in later adolescence among girls. However, the study did not find a similar association for boys.
Researchers found that common ravens use food calls to convey age and sex information, allowing individuals to assess competition and decision-making processes. This cognitive ability enables ravens to extract useful data from these vocal signals, which may aid in foraging success.
A study found that higher cigarette taxes may increase the use of smokeless tobacco products, like chewing tobacco, and cigars in adolescents. The authors suggest that comprehensive tobacco control policies are needed to address this issue.
Red-fronted lemurs demonstrate an ability to recognize individuals of their own species from photographs, with females showing a stronger response than males. The animals' capacity for cross-modal recognition suggests that they use both sight and smell to differentiate between conspecifics and heterospecifics.
A study found that marketing messages for lower strength wines and beers are often associated with healthier habits, despite containing less alcohol. This can paradoxically lead to increased consumption, as consumers mistakenly believe these products are suitable for all occasions.
The study found that elderly men and women spent significant amounts of time on different types of housework activities. While engaging in some housework was beneficial to the health of older adults, long periods combined with too much or too little sleep were associated with poor health among elderly women. In contrast, elderly men wh...
A new DNA marker discovered by University College London researchers can detect fatal breast cancer up to a year before symptoms appear. The EFC#93 DNA methylation marker in blood serum correctly identified 43% of women who went on to be diagnosed with fatal breast cancer within three to six months.
A recent study published in BMC Public Health found that socially isolated individuals are more likely to develop type 2 diabetes. The research suggests that promoting social integration and participation may be a promising target in prevention strategies for type 2 diabetes.
A study published in BMC Public Health found that healthy eating is associated with better self-esteem and fewer emotional problems in children, regardless of body weight. The study analyzed data from over 7,600 children in eight European countries and found that adherence to healthy dietary guidelines was linked to improved wellbeing.
A study in Toronto found that commuters are exposed to high levels of noise while using public transport, with peak levels exceeding EPA recommended thresholds. Researchers recommend reducing noise exposure through materials and equipment improvements, as well as promoting hearing protection.
A mutation in the SCL24A4 gene is identified as the cause of enamel hypoplasia in Samoyed dogs, leading to discolored and malformed teeth. The study found that breeders can eliminate the faulty gene through selective breeding.
A new study estimates that between 0.9% and 1.3% of UK adults used emergency food banks in 2013-2015, equating to approximately 850,000 people annually. Repeat visits indicate that distributing emergency food is not a long-term solution to food poverty.
Research published in BMC Research Notes found that desk-based workers spent 73% of their working day sitting down, but wanted to spend only 53.8% of it doing so. They also preferred spending more time walking and standing during work hours, with an additional 46 minutes per eight-hour day for walking and 26 minutes for standing.
A study published in BMC Medicine found that non-UK qualified GPs work longer hours, tend to be older and serve more patients in deprived areas. The Brexit policy restrictions on immigration are likely to worsen the GP workforce crisis, with the most affected being the UK's most deprived areas.
Ant queens perform 'undertaking behaviors' when co-founding a new colony with an infected queen, biting and burying the corpse to prevent pathogen transmission. This behavior is associated with a significant reduction in mortality among queens, suggesting that they have evolved complex strategies to limit disease transmission.
Researchers found that a set of validated, self-reported questions can predict mental health problems like depression and PTSD after return from deployment. The questions assess 14 psychological attributes and can be used to identify high-risk individuals.
A comprehensive study monitored microbial load, diversity and dynamics in a closed habitat for 520 days, finding human-associated bacteria to be the main source of microbial dispersal. The researchers also noted that confinement triggered significant changes in the bacterial community, with diversity decreasing over time.
New research found that global livestock methane emissions for 2011 are 11% higher than previously estimated. The study used revised emissions factors and spatially distributed annual carbon fluxes to calculate the increased emissions.
A study published in BMC Medicine found that routine screening and interventions for hazardous and harmful alcohol use in people with hypertension in primary care could significantly lower blood pressure and reduce premature deaths. The authors estimate that these interventions would lead to substantial reductions in cardiovascular dis...
A study involving 7603 Danish employees found that sexual harassment by clients or customers is associated with increased depressive symptoms, scoring 2.05 points higher on the Major Depression Inventory. In contrast, employees harassed by colleagues scored 2.45 points higher, indicating a significantly higher risk of clinical depression.