Current Population News and Events

Current Population News and Events, Population News Articles.
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First-degree relative with kidney disease increases disease risk by three-fold
In a large population-based family study, family history of kidney disease was strongly associated with increased risk of chronic kidney disease. (2021-01-12)

Study of virus attack rate in Manaus, Brazil, shows outcome of mostly unmitigated epidemic
Researchers studying data from blood donors in Manaus, Brazil, who experienced high mortality from SARS-CoV-2, estimate that more than 70% of the population was infected approximately seven months after the virus first arrived in the city. (2020-12-08)

Random effects key to containing epidemics
To control an epidemic, authorities will often impose varying degrees of lockdown. In the journal Chaos, scientists have discovered, using mathematics and computer simulations, why dividing a large population into multiple subpopulations that do not intermix can help contain outbreaks without imposing contact restrictions within those local communities. When infection numbers are high, random effects can be ignored. But subdividing a population can create communities so small that the random effects matter. (2020-10-27)

Study finds hospital-diagnosed overweight or obesity linked with markedly higher risk of death over 40 years
Individuals whose overweight or obesity is diagnosed in hospital are 60% more likely to die compared to the general population, according to a nationwide Danish study that followed over 1.9 million people for up to 40 years, being presented at The European and International Congress on Obesity (ECOICO), held online this year from 1-4 September. (2020-09-02)

Changes in climate and land cover affecting European migratory bird populations
Changes in climate and habitat on the breeding and non-breeding grounds of migratory birds are both playing an important part in driving their long-term population changes. (2020-08-14)

Herd immunity threshold could be lower according to new study
Herd immunity to Covid-19 could be achieved with less people being infected than previously estimated according to new research. (2020-06-23)

During pandemic stage of emerging pathogen, climate has modest impact compared to population suscept
In influencing the trajectory of the pandemic stage of an emerging pathogen, a population's susceptibility to a novel disease is more influential than climate factors like humidity. (2020-05-18)

In France, population immunity to SARS-CoV-2 at about 4.4% in may, modeling suggests
By May 11, when lockdown restrictions were eased in France, about 4.4% of the French population had been infected with SARS-CoV-2, a new modeling study suggests. (2020-05-13)

Certain steps help lead to healthy pregnancies in women with rheumatoid arthritis
For women with rheumatoid arthritis (RA), taking certain steps to ensure that they have a healthy pregnancy leads to a reduced risk of complicated birth or miscarriage, according to a study in Arthritis Care & Research. (2020-01-08)

Limiting global warming would relieve populations from wet and dry extremes in China
Scientists find that heavy precipitation events would intensify with global warming all over China, affecting all the populations around. Meanwhile, dry extremes would intensify in South China and exert adverse impact on the large population there. (2019-12-17)

The ancient history of Neandertals in Europe
Parts of the genomes of two ~120,000-year-old Neandertals from Germany and Belgium have been sequenced at the MPI for Evolutionary Anthropology. The analyses showed that the last Neandertals, who lived around 40,000 years ago, trace at least part of their ancestry back to these European Neandertals that lived around 80,000 years earlier. The 120,000-year-old Neandertal from Germany, however, carried some ancestry that may originate from an isolated Neandertal population or from relatives of modern humans. (2019-06-26)

Leopard coral grouper: Overexploited
Researchers measured the population stock in Saleh Bay, Indonesia of the commercially valuable leopard coral grouper (Plectropomus leopardus), a species subject to population collapse due to high fishing pressure. (2019-06-06)

Counting the uncounted
Though abundance is a fundamental measure in ecology and environmental management, detecting all individuals in a population is usually impossible when monitoring, so estimates of abundance must account for imperfect detection. (2019-06-06)

The decline of state-level IVC filter utilization
National inferior vena cava (IVC) filter utilization in the Medicare population has declined over the last decade according to a prior Harvey L. Neiman Health Policy Institute study published in 2018. How IVC filter utilization has varied at the state level and different payer populations during the recent decline in utilization is unknown. This new AJR study assesses state level IVC filter utilization & expands the population set to include Medicare and privately insured population. (2019-04-04)

Origin of Scandinavian wolves clarified
There are no signs that hybrids of dog and wolf have contributed to the Scandinavian wolf population -- a matter that has been discussed, especially in Norway. These wolves appear to have originated from the Nordic region or adjacent parts of Northern Europe, new genetic research from Uppsala University shows. (2019-03-29)

Choosy amphipods
Amphipods of the species Gammarus roeselii guard their chosen mates, often carrying them with them for days and defending them against potential rivals. This behavior requires a lot of time and energy, so that the males make their choice with care. Scientists at Goethe University have now investigated under which circumstances males are prepared to revise their decision. (2019-02-07)

Bee dispersal ability may influence conservation measures
The abilities of various bee species to disperse influences the pattern of their population's genetic structure, which, in turn, can constrain how they respond to environmental change, as reported by an international team of researchers. (2019-02-07)

Research proves South East Asian population boom 4,000 years ago
Researchers have uncovered a previously unconfirmed population boom across South East Asia that occurred 4,000 years ago, thanks to a new method for measuring prehistoric population growth. (2018-09-20)

Can population policy lessen future climate impacts?
Population has been seemingly left out of climate change assessments, including by the Intergovernmental Panel on Climate Change. (2018-08-16)

At what size does a minority group become influential?
When a viewpoint is held by a minority, what size does that minority need to reach to hit a tipping point, where their view becomes widely accepted in the rest of the population? (2018-06-07)

Impacts of windfarm construction on harbor porpoises
Scientists from Germany, Denmark and the UK have built a model tool to predict what happens to marine animals when exposed to noise from the construction and operation of wind farms at sea. (2018-05-07)

Certain pain medications linked to increased heart risks
Use of nonsteroidal anti-inflammatory drugs (NSAIDs) was associated with an 18 percent increased risk of atrial fibrillation -- an irregular, often rapid heart rate -- in a study of middle-aged adults in Taiwan. (2018-03-21)

University of Guelph researchers create tool to manage urban cat population crisis
Guelph researchers have developed a unique model that accurately calculates urban cat populations. It's the first to account for overall cat population dynamics and include calculations for the three subpopulations -- owned cats, stray cats, and cats in the shelter system. There are about 10 million to 120 million free-roaming and feral cats in North America. This model will give cities the accurate numbers needed to effectively manage the current cat population crisis. (2018-02-28)

Are older adults with knee pain less active than the general population?
A new Arthritis Care & Research study found that moderate-to-vigorous physical activity levels are similarly low in older adults with symptomatic knee osteoarthritis and those from the general population without osteoarthritis or knee pain. (2018-02-22)

Majority overestimates US gay population, could influence gay rights policies
The public tends to overestimate the American gay and lesbian population, and those who do so are less likely to support equal rights measures, according to a new study by two University of Kansas political scientists. (2017-10-16)

Lead fishing tackle may be threatening loon populations
A new study published in the Journal of Wildlife Management reveals the devastating effects of lead fishing tackle on loon populations. (2017-10-12)

Research rethinks the evolutionary importance of variability in a population
It's been long thought that variability within a population is key to population's growth and survival but new research questions that assumption. Harvard researchers found that variability can actually lower population growth in single-cell organisms. This insight is important for characterizing the fitness of a population, which is useful, for instance, in understanding how bacteria respond to antibiotics. (2017-10-04)

Lizards demonstrate rapid evolution in the face of extreme cold
By studying a population of lizards before and after a sudden cold snap that struck the US, scientists have observed how the surviving population underwent rapid adaptation in response to the event. (2017-08-03)

Between extinction and survival of endangered populations
Populations of endangered species reach a critical point and therefore, efforts to predict and prevent their extinction require a thorough understanding of the underlying mechanisms. In a new study published in EPJ B, Hatem Barghathi has investigated how environmental disturbance at random times could cause strong fluctuations in the number of individuals in biological populations. They found that environmental disorder can lead to a period of slow population increase interrupted by sudden population collapses. (2017-07-12)

Movement of early humans into the Indian subcontinent
Scientists in India have used a diffusion model to study the movement and merger of early humans into and in the Indian subcontinent starting from their initial location as determined by archaeologists. They then identify locations where different groups are expected to merge, and compare this data with genetic studies of tribes from that region to show that predictions agree with genetic data. (2017-05-11)

UTHealth: Rapid population decline among vertebrates began with industrialization
Rapid population decline among vertebrate species began at the end of the 19th century when industrialization was at its peak, according to researchers at the University of Texas Health Science Center at Houston and the Chinese Academy of Sciences. (2016-12-15)

Sustainable Development Goals lead to lower population growth
Achieving the Sustainable Development Goals would significantly slow population growth, according to a new study. (2016-11-29)

People with epilepsy face increased risks of discrimination and other negative life events
In a recent analysis, people with epilepsy were seven-fold more likely to have reported experiencing discrimination due to health problems than the general population. This risk was greater than other chronic health problems such as diabetes, asthma and migraines. (2016-10-14)

New population data provide insight on aging, migration
A new dataset provides a comprehensive look at population dynamics in Europe, including the influence of migration on population growth and the effect of population aging. (2016-08-31)

Brazil faces major challenges in liver transplantation
A recent analysis indicates that more than 1,700 liver transplantations are performed annually in Brazil. While Brazil performs more liver transplant surgeries than anywhere else in Latin America and is third worldwide in absolute terms, the country averages only 5 to 10 liver transplants per million population due to its increasing population and inadequate donor organ supply. (2016-08-01)

Third to half of UK population lives with chronic pain
Between a third and half (43 percent) of the UK population -- roughly 28 million adults -- lives with chronic pain, finds an analysis of the available evidence, published in the online journal BMJ Open. (2016-06-20)

New model may improve population management of species facing local extinction
By developing a new model, researchers have provided the first detailed mortality estimates for male African lions. A comparison of two populations, including the one of Cecil, exposed the signature that human impact leaves on male lion mortality. (2016-02-22)

Project to estimate the size of the lesbian, gay and bisexual community in England
Public Health England (PHE) has commissioned a health service research team from Plymouth University Peninsula Schools of Medicine and Dentistry (PUPSMD) to model the size of the LGB population in England. (2016-02-15)

Mothers' appetites can keep size of wild animal groups in check
The eating habits of mothers may be key to keeping wild animal populations steady, a study suggests. (2016-01-11)

Rural-to-urban migration associated with negative environmental effects in Chinese cities
A University of Missouri researcher has found a strong correlation between the influx of labor migrants from rural to urban areas and negative environmental effects on those destination cities. (2015-11-03)

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