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September 1, 2014 | NPR · A Guinean student in the Senegalese capital of Dakar has tested positive for the deadly disease. David Greene talks to Krista Larson, West Africa correspondent for the Associated Press.
 
September 1, 2014 | NPR · Protesters surrounded Prime Minister Nawaz Sharif's home, and for a brief period forced government TV off the air. Steve Inskeep talks to Jon Boone, a correspondent for The Guardian in Islamabad.
 
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September 1, 2014 | NPR · A widely watched video shows a foreigner fainting on a subway car and everyone around him fleeing. No one helps. It's rekindled a national debate about trust, fear and the Chinese national character.
 

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September 1, 2014 | NPR · Ebola has exposed weaknesses in Africa's health networks and a failure to work together to arrest the spread of the virus. The "not our problem" response is taking an economic toll on the continent.
 
September 1, 2014 | NPR · Nearly 260 health workers in West Africa have been infected, and 134 have died. Dr. Robert Garry of Tulane University, who worked with five who died, discusses the devastation in the community.
 
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September 1, 2014 | NPR · Ads with candidates shooting guns are proliferating this year. It can all be traced back to Sen. Joe Manchin's famed 2010 spot "Dead Aim."
 

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August 30, 2014 | NPR · Ukrainian forces are defending the port city of Novoazovsk from what they say is a Russian invasion. Scott Simon talks to correspondent Soraya Sarhaddi Nelson.
 

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August 31, 2014 | NPR · Immigration remains one of the most challenging issues for President Obama. Political correspondent Mara Liasson discusses the political cost of the choices before him with Linda Wertheimer.
 

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Vitamin D

Nov 20, 2013 — By a standard test most African-Americans have low levels of vitamin D. But most African-Americans also have strong bones. It turns out that the problem is with the test, which was looking for a form of D more common in Caucasians. The variation is a result of human evolution.
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Oct 28, 2013 — These days teenagers shun milk and reach for the energy drinks. That doesn't bode well for their bones, since most of the adult skeleton is built between ages 9 and 14. Calcium and vitamin are crucial, but perhaps the most surprising ingredient for strong bones is exercise.
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Oct 12, 2013 — A review of clinical trials using vitamin D to build bone density in middle-aged women finds that it doesn't help. That may be because those women aren't generally low on calcium and that D helps the body absorb calcium in the gut only if it's seriously lacking. It may do more good in the elderly.
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Apr 9, 2013 — Babies born in London in May have less vitamin D and more of a certain type of immune cell in their blood than babies born at other times. Researchers say the differences might help explain why people born in the spring are more likely to get multiple sclerosis.
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Apr 1, 2013 — In the ongoing debate about the possible benefits of vitamin D supplements, a study suggests that the vitamin might indeed play a role in mildly reducing high blood pressure. The study was small and looked at just African-Americans, but the authors say the findings warrant further research.
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Oct 25, 2012 — How much vitamin D is enough vitamin D? And when should you add supplements to the diet? Doctors still disagree on the specifics, but some studies suggest that more isn't always better.
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Oct 2, 2012 — Some lab studies suggested vitamin D supplements might enhance immunity. But a clinical test in New Zealand found that taking vitamin D didn't reduce the frequency or duration of colds for the people who took the supplements.
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Aug 6, 2012 — Researchers say vitamin D deficiency is common among kids who are very ill. They also found that kids without enough vitamin D were more likely to be in the hospital longer than other kids.
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Jun 21, 2012 — Our evolutionary history is inscribed on our very skin. The explanation for why diverse skin colors evolved over time makes not only for good anthropology, but also for applied knowledge that may help us keep intact our Vitamin D health.
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Jun 12, 2012 — The U.S. Preventive Services Task Force concluded in draft recommendations released Tuesday that taking vitamin D and 1,000 milligrams of calcium every day doesn't reduce the risk for bone fractures among postmenopausal women. So the group is taking steps to recommend that women refrain from taking the supplements for those purposes.
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