Health

'Starving yogi' astounds Indian scientists

An 83-year-old Indian holy man who says he has spent seven decades without food or water has astounded a team of military doctors who studied him during a two-week observation period.

Health

One in four has alarmingly few intestinal bacteria

All people have trillions of bacteria living in their intestines. If you place them on a scale, they weigh around 1.5 kg. Previously, a major part of these 'blind passengers' were unknown, as they are difficult or impossible ...

Diseases, Conditions, Syndromes

Indigenous cases of leprosy found in the United States

Using advanced DNA analysis and extensive field work, an international research team has confirmed the link between leprosy infection in Americans and direct contact with armadillos. In a joint collaboration between the ...

Psychology & Psychiatry

Why police sketches sometimes don't work

When they were investigating the series of attacks on women in Philadelphia's Kensington neighborhood, police stopped dozens of black or Latino men who were thought to resemble a face in a forensic sketch. The image of a ...

HIV & AIDS

AIDS virus lineage much older than previously thought

An ancestor of HIV that infects monkeys is thousands of years older than previously thought, suggesting that HIV, which causes AIDS, is not likely to stop killing humans anytime soon, finds a study by University of Arizona ...

Genetics

Genetic map of Britain goes on display

A genetic map of the British people has been produced by Oxford University researchers. It forms the centrepiece of their display at the Royal Society's free Summer Science Exhibition, which opens today.

Diseases, Conditions, Syndromes

Researchers trace source of cocaine-driven TB outbreak

(PhysOrg.com) -- Simon Fraser University researchers are the first to combine the latest techniques of whole bacterial genome analysis with social networking surveys to track down the puzzling origins of a tuberculosis (TB) ...

Medical research

Study finds unexpected bacterial diversity on human skin

The health of our skin -- one of the body's first lines of defense against illness and injury — depends upon the delicate balance between our own cells and the millions of bacteria and other one-celled microbes that live ...

page 1 from 7

Genetic testing

Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases, and can also be used to determine a person's ancestry. Normally, every person carries two copies of every gene, one inherited from their mother, one inherited from their father. The human genome is believed to contain around 20,000 - 25,000 genes. In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes in chromosomes, genes, or proteins. Most of the time, testing is used to find changes that are associated with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person's chance of developing or passing on a genetic disorder. Several hundred genetic tests are currently in use, and more are being developed.

Since genetic testing may open up ethical or psychological problems, genetic testing is often accompanied by genetic counseling.

This text uses material from Wikipedia, licensed under CC BY-SA