Articles tagged with Population Studies
A new study by USC Leonard Davis School of Gerontology researchers finds that Americans with less education are aging faster, with the gap growing over 30 years. The study measured biological aging, which looks at how well organs and systems work, and found that people with more education have slower biological aging.
Ancient Sumerian society harnessed tidal hydrology to irrigate crops, enabling high-yield agriculture without large-scale infrastructure. The research suggests that the early communities' dependence on dependable hydrology drove societal response and defined the golden age of Sumer.
A new database compiled by researchers at the University of Queensland provides a detailed picture of the frog and freshwater fish species on hundreds of Australian islands. The study found that 536 islands have freshwater habitats, with 102 amphibian species and 95 freshwater fish species recorded.
The initiative aims to uncover critical genetic and metabolic mechanisms that may explain the increased incidence of ALS among high-performing populations. By using remote-participation technology, up to 500 participants will be collected, eliminating logistical barriers and expanding who can take part in research.
An international study found that people across cultures tend to rely on their own intuition rather than seeking advice when making complex decisions. The research, led by the University of Waterloo, suggests that understanding this preference can help clarify cross-cultural misunderstandings and improve teamwork.
A Cornell University-led study finds that Americans are increasingly supporting a stronger safety net for older adults, with nearly 58% backing increased Social Security spending. The survey also reveals growing demand for government-provided care programs, such as help with everyday household tasks like grocery shopping and cleaning.
A recent study by Florida Atlantic University found that US adolescents with cannabis use disorder have low treatment completion rates, ranging from 34.2% to 33.8%. The most common reasons for not completing treatment were dropping out, transferring facilities, and being terminated. Adolescents who began using cannabis at a younger age...
A recent study found that people in poorer areas receive three times the prescriptions for opioids than those in wealthier areas, despite a decline in overall opioid use in Canada. The research highlights the persistence of inequalities in healthcare and the need for targeted interventions to mitigate the risks of opioid misuse.
Researchers at the University of Illinois are working to bring back biodiversity to the Midwest by analyzing commercially sold seeds and plants. They found that long-lived species were more available than sensitive ones, and certain plant groups were over- or underrepresented in commercial seed mixes.
A new study by Texas A&M University is tracking the health effects of living in an agrihood community, where residents have access to a working farm and green spaces. The study aims to measure changes in physical activity, nutrition, and social connectedness among participants.
A study published in Pediatrics reveals a sharp surge in nicotine pouch ingestions among young children, with a 763% increase in rate of reported cases between 2020 and 2023. The ingestion rates for other nicotine products declined during the same period.
A new Leicester study found that women with type 2 diabetes are nearly twice as likely as men to have hidden heart damage, according to researchers. The study used advanced MRI scans and data from four studies conducted at the NIHR Leicester Biomedical Research Centre.
Rising ocean temperatures are causing higher concentrations of toxic algae in Arctic food webs, threatening the nutritional and cultural well-being of Alaska Native communities. Bowhead whales serve as indicators of this change, revealing a critical linkage between warming temperatures and increased bowhead toxicity.
A new study by Pusan National University researchers found that middle- and upper-income households in South Korea are disproportionately affected by inflation, challenging conventional views. The study suggests that policy responses need to evolve to address the unique needs of different household types.
The latest nTIDE report shows the employment-to-population ratio for people with disabilities remaining stable at 38.0 percent, similar to May's numbers. Meanwhile, the labor force participation rate increased from 41.4 percent in May 2025 to 41.9 percent in June 2025, indicating more individuals with disabilities are actively seeking ...
Researchers warn that declining response rates and concerns about data accuracy are causing a 'quiet crisis' due to foreign aid cuts and COVID-19 disruptions. The lack of census data compromises public administration and can lead to inadequate resource allocation, resulting in pernicious effects.
A comprehensive study found dementia rates were 25% higher in the Southeast compared to the Mid-Atlantic. The Northwest and Rocky Mountains had 23% and 18% higher rates respectively. These differences remained even after accounting for factors like age, race, and cardiovascular disease.
A study published in the Proceedings of the National Academy of Sciences reveals that sports fans' emotional arousal peaks during pre-game rituals, not during the game itself. Physiological data from a Brazilian soccer fan club shows sustained arousal levels comparable to the game.
A global research project has identified the most critical locations in the world's oceans for better marine conservation efforts. The study found that current Marine Protected Areas only cover 8% of the ocean, highlighting the need for additional protection and mitigation strategies to conserve threatened marine megafauna.
Individual incarceration is strongly associated with increased mortality in the US, as well as higher all-cause mortality among people living in counties with high incarceration rates. Incarcerated individuals face a 39% higher risk of dying from any cause and are three times more likely to die from drug overdose.
A recent randomized controlled trial found that a group-based intervention fostering communication and coping skills in a culturally tailored way improved outcomes for Latina breast cancer survivors and their caregivers. The study, published in CANCER journal, demonstrated high engagement among participants and clinically significant i...
A new study published in the Journal of Gerontology found that Asian Americans no longer report better health outcomes than white Americans among US adults aged 50 and over. The prevalence of disability declined across every other racial group, but remained stagnant among US-born Asians since 2005.
The study analyzed the impact of climate change during the late Palaeolithic and found that humans migrated eastwards to adapt to new climate conditions. The European population may have decreased by up to half during the Younger Dryas event, but populations in central and eastern Europe increased.
Researchers found that urban areas and male middle-aged patients are more likely to receive high-dose opioid prescriptions. The study analyzed over 3 million Medicaid claims in Missouri from 2017 to 2021, identifying risk factors for opioid use disorder.
A comprehensive study found that the public generally supports individuals with black lung disease and genetic kidney disease over those with COVID-19 and alcohol use disorder. However, a lingering stigma surrounding alcohol use disorder led to it being considered least deserving of a transplant.
Research found that early-life growth plays a significant role in determining final adult height, accounting for about 67% of the variation. Childhood growth also accounted for a substantial proportion of the difference in adult height.
Research suggests that antibiotics taken during infancy, especially in the first three months, may lead to earlier onset of puberty in girls. The study, which analyzed data on over 322,000 children in South Korea, found a significant association between early antibiotic exposure and increased risk of central precocious puberty.
A new study from Texas A&M University found that residents' knowledge of environmental health risks is the most important factor in their decision to take a home buyout. Residents who live in areas with high levels of risk and are more concerned about environmental risks are more willing to accept a buyout.
Researchers found that patients taking HIV drugs called NRTIs are substantially less likely to develop Alzheimer's disease. The study, led by Jayakrishna Ambati, analyzed data from two large health insurance databases and determined a significant reduction in Alzheimer's risk among patients on NRTIs.
A study published in The Lancet Regional Health – Europe found that patients with low household income were more likely to be diagnosed late and receive less effective treatment for liver cancer. This highlights the need for targeted screening in deprived areas to improve early diagnosis and survival rates.
A recent study found that early-stage stomach cancer diagnoses are increasing, marking a major progress in detecting this deadliest form of cancer. The study suggests advancements in endoscopic imaging and more widespread use of upper endoscopy may be contributing to these shifts.
The latest nTIDE report shows the employment-to-population ratio for people with disabilities (37.4%) and without disabilities (75.1%) remained stable in April 2025. Labor force participation rates for people with disabilities (41%) increased, while those without disabilities (77.9%) decreased.
Researchers found that a fertility rate of at least 2.7 children per woman is needed to reliably avoid eventual extinction in small populations. A female-biased birth ratio can reduce extinction risk, helping more lineages survive over time.
Researchers identified risk factors for sudden unusual mental or somatic experiences, including past psychedelic use, reality distorting practices, and extensive spiritual practice. These findings can help clinicians diagnose and treat associated suffering, and inform the development of practical guidelines.
Researchers investigated the potential link between herpes zoster vaccination and dementia. They found that vaccination may be associated with a lower risk of developing dementia in older adults. The study's findings suggest a possible causal relationship between vaccination and reduced dementia occurrence.
A new study reveals promising progress toward predicting how patients with major depressive disorder will respond to antidepressant medications. Brain connectivity patterns were found to significantly improve predictions of treatment response across two large, independent clinical trials.
A multi-state study found that only half of high-risk adults with flu received antiviral treatment, highlighting a critical need for timely care. The gap in treatment increases the risk of severe flu complications, particularly among older adults and those with underlying conditions.
A study of 50-90 year olds across 29 countries found that middle-aged Americans experience high levels of loneliness, unlike other countries. The reasons for this vary by country, but factors like unemployment, depression, and poor health contribute to the problem.
A new study provides a method to estimate sample size required for microbiome studies based on effect sizes and analysis methods. For strong associations, around 500 participants were needed to achieve 80% statistical power, while weaker associations may require thousands of samples.
A study of nearly 11,000 individuals found that men with panic disorder are more vulnerable to developing problematic drinking behaviors than women, potentially due to self-medication. The research highlights the need for sex-specific assessment and intervention strategies in treating comorbid conditions
A new study found that over 50 million people in the US live in counties with no air-quality monitoring, increasing their exposure to air pollution. Rural areas, particularly those in the Midwest and South, were more likely to lack monitoring sites, often due to poverty and limited access to healthcare.
A study found that UK dog populations decreased by 0.9% annually from 1990 to 2021, with a rise in crossbreed and imported dogs. The research highlights concerns about inherited diseases due to limited genetic diversity in pedigree breeds.
A global study found that countries consuming more plant-based proteins have longer adult life expectancies, while high animal-based protein intake is linked to lower infant mortality rates.
A recent study published in Frontiers found that reducing socioeconomic disparities can significantly alleviate adverse birth outcomes, with 48% of low-weight births and 15% of premature births possibly avoiding if all women had the same risk level as White British women living in less deprived areas.
A study found 3,196 poisoning events in European raptors, with scavenging birds disproportionately affected by carbofuran and aldicarb. The most commonly poisoned species was the Eurasian Buzzard, highlighting the need for targeted conservation efforts.
The latest nTIDE report shows a modest gain in employment-to-population ratio for people with disabilities, reaching 37.5 percent in March 2025. Labor force participation also increased slightly to near 38 percent, a level that has become the new normal over the past 12 to 18 months.
A study finds that deporting undocumented immigrants working in the US healthcare system could lead to a significant shortage of skilled personnel. The loss of these workers would be particularly challenging to replace, especially if legal immigration is restricted.
A study found that pedometers capture a remarkable 88% of the health information provided by more advanced accelerometer measurements. Walking at a brisk pace is essential for cardiovascular health optimization, with a minimum cadence of 80 steps per minute strongly associated with good aerobic fitness.
A new study reveals significant shifts in prehistoric hunter-gatherer populations in Europe due to climate changes at the end of the last Ice Age. The population declined by half, but some areas in central Europe showed stability or even an increase in population size, indicating human migration towards the east.
A study by Brown University researchers found that Americans across all wealth levels have poorer survival rates than Europeans. The gap between rich and poor in the US is larger than in Europe, contributing to lower life expectancy.
The partnership aims to identify workforce trends and solutions, with a focus on apprenticeships, stackable credentials, and career pathways. Initial research findings are expected by the end of this year and will serve as a model for other states.
The University of Texas at Arlington has launched a new Mobile Simulation Lab to tackle workforce and training challenges in rural areas. The lab, equipped with advanced patient manikins and simulation bays, will provide specialized training for local healthcare providers to expand their expertise.
A centralized notification pathway increased hypertension treatment in individuals with left ventricular hypertrophy. This study highlights the potential of leveraging underutilized cardiovascular data to enhance healthcare delivery.
A study by Boston University School of Public Health found that over half of US adults experience some form of discrimination, which can lead to higher chances of depression and/or anxiety. Discrimination-related mental health issues were particularly pronounced among multiracial, White, and Asian populations.
University of Michigan researchers developed a statistical method to give a more complete sense of human ancestry. The Gaia algorithm estimates an individual's genetic ancestors, identifies their average location based on movement assumptions, and tracks it back over centuries.
A study published in the International Journal of Manpower found that offering paid time off (PTO) significantly reduces the likelihood of employees quitting their jobs, with a greater reduction for men. PTO does not affect job satisfaction, which independently reduces turnover by 30-40%. Flexible scheduling also reduces turnover, but ...
A population-based surveillance study found that Black infants and children consistently have double the risk for death compared to Whites. The study analyzed data from 1950 to 2019 and estimated excess mortality burden on Black Americans compared to White Americans.
A study confirms plasma p-tau217 as a blood-based biomarker for early Alzheimer's detection in Asian populations. Higher levels correlate with faster cognitive decline, suggesting its potential role as both diagnostic and predictor tool.
Environmental factors such as rainfall and water availability before and during pregnancy predict future growth outcomes of children in Uganda. The study found that children born to mothers living in areas with high rainfall had a lower risk of malnutrition, while those born to mothers experiencing drought had a higher risk.
A study of top 100 ADHD TikToks found that fewer than half of claims about ADHD symptoms aligned with clinical standards. Young adults' perceptions of the informational value of these videos differed from those of psychologists, leading to a potential spread of misinformation.