News tagged with human populations

With population rise, natural laws purge nastiest genes

(Medical Xpress)—As human population grows, disease-causing genetic mutations per individual increase, but each mutation is less harmful, when compared with a population that is not growing, says a Cornell study to be published ...

Oct 03, 2013
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Important wound-healing process discovered

Scientists at The Scripps Research Institute (TSRI) have discovered an important process by which special immune cells in the skin help heal wounds. They found that these skin-resident immune cells function as "first responders" ...

Sep 26, 2013
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Getting rid of unwanted visitors

Gut-dwelling bacteria are attracting increasing attention, particularly those associated with human diseases. Helicobacter pylori is found in the stomach of humans, where it may cause chronic gastritis and ...

Sep 20, 2013
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Researchers tease apart workings of a common gene

Researchers at Weill Cornell Medical College have discovered why a tiny alteration in a brain gene, found in 20 percent of the population, contributes to the risk for anxiety, depression and memory loss.

Sep 19, 2013
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US lawmakers examine gender imbalance in India

Millions of sex-selective abortions in India have skewed gender ratios, and the origins of the problem can be traced to American-supported population control strategies decades ago, a U.S. congressional panel heard Tuesday.

Sep 11, 2013
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Studies examine fetal alcohol syndrome in South Africa

Two recently published studies report prevalence data about fetal alcohol spectrum disorders (FASD) in South Africa and find that negative consequences of prenatal exposure to alcohol may be lessened if a child is provided ...

Aug 28, 2013
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Immunology: White blood cells show their stripes

For the human immune system to work effectively, the body must be able to distinguish invading pathogens, such as fungi and bacteria, from its own healthy tissue. A group of white blood cells known as dendritic ...

Aug 28, 2013
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