Articles with the keyword: 
Slightly more girls born to parents in the tropics than to parents in other places
Darkfrog submitted, created time 1 year 5 months (sciencenow.sciencemag.org)
The first global study on human sex ratios reveals that parents are slightly more likely to give birth to female children at tropical latitudes. Researchers have been collecting data for this study for ten years.
The worldwide average is 105 boys for every hundred girls, but this varies a great deal by continent and even by country. In the tropics, the average percentage of male births drops to only 51.1%.
The article takes into account latitude, average temperature and day length, the last of which seems to be most important 
The heart disease mutation carried by 60 million
piggy submitted, created time 1 year 7 months (www.eurekalert.org)
Heart disease is the number one killer in the world and India carries more than its share of this burden. Moreover, the problem is set to rise: it is predicted that by 2010 India's population will suffer approximately 60% of the world's heart disease. Today, an international team of twenty-five scientists from four countries provides a clue to why this is so: 1% of the world's population carries a mutation almost guaranteed to lead to heart problems and most of these come from the Indian subcontinent, where the mutation reaches a frequency of 4%
The prevalence of gluten-sensitive enteropathy in iron-deficient anemia patients
sea-maid submitted, created time 1 year 8 months (www.eurekalert.org)
A research group from Iran investigated the prevalence of gluten-sensitive enteropathy (GSE) in a large group of patients with iron deficiency anemia (IDA) of obscure origin. They found that there is a high prevalence of GSE in patients with IDA of obscure origin. A gluten-free diet can improve anemia in GSE patients who have mild duodenal lesions without villous atrophy.
FDA: Epilepsy drug may be risky for Asians
piggy submitted, created time 1 year 9 months (www.fda.gov)
FDA is investigating new preliminary data regarding a potential increased risk of serious skin reactions including Stevens Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) from phenytoin therapy in Asian patients positive for a particular human leukocyte antigen (HLA) allele, HLA-B*1502. This allele occurs almost exclusively in patients with ancestry across broad areas of Asia, including Han Chinese, Filipinos, Malaysians, South Asian Indians, and Thais
Epilepsy drug may be risky for Asians
sea-maid submitted, created time 1 year 9 months (news.yahoo.com)
Treatment with certain epilepsy drugs may expose some Asian patients to serious skin reactions, federal health officials warned Monday.
The Food and Drug Administration said it is investigating whether medications like Dilantin, Phenytek and Cerebyx, which are used to control epileptic seizures, can lead to severe skin blisters and bleeding for some Asian patients.
Patients who test positive for a gene known as HLA-B1502 appear to be at increased risk of developing the skin problems, preliminary data indicate
Loulan Beauty upsets Chinese View of Colonization of Xinjiang
Darkfrog submitted, created time 1 year 9 months (www.nytimes.com)
In Xinjiang, a part of China that mainstream culture considers to be entirely Chinese, the discovery of over two hundred extremely well-preserved and marketly not Han Chinese mummies have called that assertion into question. Xinjiang borders Kazakh and Mongolia.
My take? Well DUH. Human beings migrate like crazy. Borders change. My ancestors moved from God-knows-where to Ireland, displacing the people who lived there earlier. Today we call their other descendants "Irish" and wouldn't think of calling them anything else
Calcium May Only Protect Against Colorectal Cancer in Presence of Magnesium
sea-maid submitted, created time 1 year 9 months (www.sciencedaily.com)
High magnesium intake has been associated with low risk of colorectal cancer. Americans have similar average magnesium intake as East Asian populations. If that were all that were involved, observers might expect both groups to have similar risk for colorectal cancer
Genetic testing may not be the best way to study one's ancestry
Darkfrog submitted, created time 1 year 9 months (www.nature.com)
In recent years, companies providing personal genetic exams have sprung up like mushrooms. For a fee and a cheek swab, they can will identify the client's countries of ancestry, even to specific regions.
However, Charmaine Royal of the the Duke Institute for Genome Sciences has serious reservations:
"The general limitation, I'd say, of all of these tests, is that they can't pinpoint with 100% accuracy who your ancestors may or may not be. Some people are concerned that the biogeographical ancestry test reifies the notion of race
Genetics: Phoenicians leave their mark on the world ...again
Darkfrog submitted, created time 1 year 10 months (www.nytimes.com)
If you look for "Phoenicia" on a map, you won't find it. The people, culture and language were dead when the Romans were still Roming all over the place. (As a matter of fact, these two events were directly related; darn legionnaires!) Still, you're heard of the Phoenicians before. Maybe you don't remember precisely when, but it's something that reminds you of stone and Greece and a sea that is for some reason wine-dark.
It could be because Phoenicia had a huge trading empire and a huge influence on the ancient Mediterranean
HIV in the U.S. hits American blacks extra hard
Darkfrog submitted, created time 1 year 11 months (www.nytimes.com)
The CDC has released a report on the way HIV spreads in the United States. Again, American blacks are at disproportionately high risk. While caucasian gay and bisexual men tend to get infected int heir thirties and forties, black gay and bisexual men tend to get infected in their teens and twenties.
The writeup does not say whether they adjusted for socioeconomic factors, but they do assert that the infected blacks were no more likely to be drug users or to engage in risky sexual behaviors than their counterparts in other races
Black Americans have higher rates of HIV than some African countries
Darkfrog submitted, created time 2 years 1 month (www.nytimes.com)
According to the Black AIDS Institute, the United States may have a lower incidence of HIV than other countries overall, but U.S. blacks, considered alone, aren't so lucky. With 600,000 African-Americans living with HIV and 30,000 new infections each year, if American blacks were a country on their own, they would rank sixteenth worldwide. What's more, infected blacks are much more likely to die than infected whites, after adjusting for age (the article does not say that it adjusted for socioeconomic status)
HIV gene is a mixed blessing for carriers
sea-maid submitted, created time 2 years 1 month (www.newscientist.com)
A GENETIC mutation common in African Americans slows the progression of HIV, yet paradoxically increases the risk of contracting the virus in the first place.
A clue that race-specific genes are involved in HIV came in 2002, when Sunil Ahuja of the University of Texas Health Science Center in San Antonio and colleagues discovered a mutation in the CCL5 gene that accelerates the progression of HIV-1, the most common form of the virus. Though the mutation was found in people of all races, it only accelerated the disease in Americans of European descent
jerry submitted, created time 2 years 1 month (www.current-biology.com)
The biologist Paul Ehrlich came to public attention in 1968 with the publication of his book, The Population Bomb. Worries about the potential problems of a soaring global population had boiled and cooled over previous decades. And the issue had become so enmeshed with political decisions that many just wished to ignore it. The warnings of Thomas Malthus, the eighteenth-century writer who had had such influence on many thinkers on the problems of uncontrolled population growth, had slipped into the background
Warmer Temps, More Kidney Stones
sea-maid submitted, created time 2 years 1 month (www.time.com)
Kidney stones are already more common in the warmer Southern states than in the North.
National parks spark population growth! ...human populations
Darkfrog submitted, created time 2 years 1 month (sciencenow.sciencemag.org)
Despite what critics, proponents, common sense and a proportionate number of the planets 8-balls would have told us, national parks in developing countries are GOOD for people but BAD for animals.
It doesn't make sense on the surface. Opponents of national parks in poor areas have argued that people shouldn't be barred access to traditional hunting grounds, but demographic studies show that human population growth near park borders increases faster than in other places--it implies that people are moving there for the jobs and aid that go hand-in-hand with park placement
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