Friday November 15, 2019

Sex Ratio Tipping towards Men: An Exhaustive Look at Swedish Demographics

Norway swung to a male surplus in 2011, four years before Sweden, while Denmark and Switzerland are nearing a sex ratio of 100

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Sweden. Image source: VOA
  • A National statistics agency, SCB showed 277 more men than women in 2015
  • European Union population statistics suggests women will remain in the majority in most European countries for decades to come
  • Despite a natural birth rate of about 105 boys born for every 100 girls, European women have historically outnumbered men because they live longer

The natural sex ratio at birth, as presented by World Health Organization, WHO, is 105 boys for every 100 girls. However, predominantly, in the West, women have always been more numerous than men because they live longer. Hence, it came as a surprise in Sweden, when, in March last year, the census highlighted the fact that there were 277 more men than women.

What’s more, the number has since then grown to a massive 12000, which is still not very big compared to 9.7 million, which is the current population of Sweden, but definitely perplexing. Many demographic analysts and population experts, like Tomas Johansson and Frencesco Billari, confess they were not expecting this event to occur so soon.

There is currently an excess of 12 million women in the European Union, which has a population of approximately 500 million as a whole. Eurostat spokeswoman Baiba Grandovska believes, however, that this gap between the number of men and women is likely to narrow in the coming years,  “mainly because of the decreasing gap in life expectancy.” This comes as a result of an overall change in the lifestyle of men as compared to their fathers.

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Increasing awareness of heart diseases, adverse effects of smoking and drinking and more sophisticated medical equipment has encouraged them to modify the way they live. Wealthier countries now offer safer desk jobs as compared to working in mines and the construction business.

In Sweden, particularly, the numbers are going a little crazy. There was an unusual increase in the sex ratio to 108 boys for every 100 girls born in the year of 2014. Beating that increase, the sex ratio is now an absurd 123 boys for every 100 girls among 16-17 year olds, which beats even the sex imbalance in China and India.

sex ratio

Valerie Hudson of Texas A&M University, who released these numbers, attributes this sudden rise in the sex ratio to the sudden wave of refugees, mostly adolescent boys, from Afghanistan, Syria and North Africa that have run away from their war-stricken homes to seek asylum in Sweden. BBC reports that Sweden has received more asylum applications than any other country in Europe -163,000 just last year.

The Scandinavian country also houses immigrant-friendly laws; any underage refugee receives stable housing and financial resources. News like this travels fast and many young men often lie about their age to avail of these services, a matter that has now become a pressing concern. The authorities are debating the application of age determination tests for better screening of underage individuals; however, this is still a sensitive topic in the Nordic country.

Adding to the appealing benefits of being an underage refugee in this country, they also enjoy the right to family reunification, through which the entire family can be brought to Sweden. Experts believe this right may work in favor of improving the sex ratio, as an invitation for the entire family into Sweden may mean that sisters and mothers arrive in Sweden, driving up the number of females.

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Security forces of Sweden fear that the country may not be prepared to adjust to the masculine nature of its society. There is an expected increase in the number of crime against women, somewhat following in the footsteps of India and China. Unsatisfied male bachelors, who may not find spouses in time, have a possibility of propagating harassment cases against women, and that is a scary prospect.

Annick Wibben, of the University of San Francisco dismisses this trail of thought, claiming that the concept of gender equality is so deeply embedded in the Swedish society, that it does not make sense to compare with Indian and Chinese populations. “The way in which masculinity works in different societies needs to be taken into account”, she said.

-by Saurabh Bodas

Saurabh is pursuing his engineering and is an intern at NewsGram. 

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US Researchers Redefine Conditions that Makes a Planet Habitable

The researchers also found that planets with thin ozone layers, which have otherwise habitable surface temperatures, receive dangerous levels of UV dosages

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Planet
Instruments, such as the Hubble Space Telescope and James Webb Space Telescope, have the capability to detect water vapor and ozone on a Planet. Pixabay

A team of US researchers has redefined the conditions that make a Planet habitable by taking the star’s radiation and the planet’s rotation rate into account – a discovery that will help astronomers narrow down the search around life-sustaining planets.

The research team is the first to combine 3D climate modeling with atmospheric chemistry to explore the habitability of planets around M dwarf stars, which comprise about 70 per cent of the total galactic population.

Among its findings, the Northwestern team, in collaboration with researchers at the University of Colorado Boulder, NASA’s Virtual Planet Laboratory and the Massachusetts Institute of Technology, discovered that only planets orbiting active stars — those that emit a lot of ultraviolet (UV) radiation — lose significant water to vaporization.

Planets around inactive, or quiet, stars are more likely to maintain life-sustaining liquid water.

The researchers also found that planets with thin ozone layers, which have otherwise habitable surface temperatures, receive dangerous levels of UV dosages, making them hazardous for complex surface life.

“It’s only in recent years that we have had the modeling tools and observational technology to address this question,” said Northwestern’s Howard Chen, the study’s first author.

“Still, there are a lot of stars and planets out there, which means there are a lot of targets,” added Daniel Horton, senior author of the study. “Our study can help limit the number of places we have to point our telescopes”.

The research was published in the Astrophysical Journal.

Horton and Chen are looking beyond our solar system to pinpoint the habitable zones within M dwarf stellar systems.

M dwarf planets have emerged as frontrunners in the search for habitable planets.

Planet
A team of US researchers has redefined the conditions that make a Planet habitable by taking the star’s radiation and the planet’s rotation rate into account. Pixabay

They get their name from the small, cool, dim stars around which they orbit, called M dwarfs or “red dwarfs”.

By coupling 3D climate modeling with photochemistry and atmospheric chemistry, Horton and Chen constructed a more complete picture of how a star’s UV radiation interacts with gases, including water vapor and ozone, in the planet’s atmosphere.

Instruments, such as the Hubble Space Telescope and James Webb Space Telescope, have the capability to detect water vapor and ozone on exoplanets. They just need to know where to look.

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“‘Are we alone?’ is one of the biggest unanswered questions,” Chen said. “If we can predict which planets are most likely to host life, then we might get that much closer to answering it within our lifetimes.” (IANS)