Obesity epidemic sweeps into developing world
Obesity spreads: world health declines.
© Getty Images
Obesity is spreading to all corners of the globe, researchers warned the meeting of the American Association for the Advancement of Science in Boston. Sedentary lifestyles and fast food are causing previously unaffected populations to fall foul of fat.
"Obesity is no longer confined to Western, industrialized societies," said anthropologist Marquisa LaVelle of the University of Rhode Island, Providence. Guatemalans in the United States, South Pacific islanders and desert-dwelling Australians are all expanding.
The South Pacific may have the worlds highest rates of obesity. In Rarotonga, the capital of the Cook Islands, 52% of men were clinically obese in 1996, compared with only 14% in 1966, Stanley Ulijaszek of the University of Oxford, UK, told the meeting. The figures are worse among skilled professionals.
In rural Papua New Guinea, obesity is on the rise thanks to higher incomes and connections to urban centres. "Modernizing influences are penetrating the remotest places on Earth," said Ulijaszek.
The global spread of sedentary jobs and energy-rich foods has triggered the epidemic, the researchers agreed. LaVelle labels the lifestyle "obesogenic".
Some populations with a genetic susceptibility to gaining weight may have been held in check by diet and physical activity until now. But a lifestyle switch can cause dramatic increases in obesity within a generation. "The brakes are taken off," said Barry Bogin of the University of Michigan in Dearborn.
Mayan children living in the United States are taller and heavier than their counterparts in Guatemala, Dearborn and his colleagues have found. Children whose favourite activity is TV or computer games are at a greater risk of being overweight.
HELEN PEARSON | © Nature News Service
Cholesterol-lowering drugs may fight infectious disease
22.08.2017 | Duke University
Once invincible superbug squashed by 'superteam' of antibiotics
22.08.2017 | University at Buffalo
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
23.08.2017 | Materials Sciences
23.08.2017 | Automotive Engineering
23.08.2017 | Life Sciences