Richard Knox appears in the following:
Monday, March 03, 2014
States are legalizing marijuana even though there's no clear understanding of its impact on health. The drug hasn't been subjected to the kind of rigorous medical research that would find that out.
Tuesday, February 25, 2014
A new virus in the Middle East has sickened more than 180 people and killed an alarming 43 percent of them. But scientists haven't been sure where the virus originates or how people catch it.
Sunday, February 16, 2014
Scientists have apparently been wrong about where new flu viruses come from, and they've underestimated the viruses' connection to horses. The dogma is that new viruses always incubate in wild migratory birds first, then get into domestic poultry, and then jump into mammals — especially pigs and humans.
Wednesday, February 12, 2014
Barbara Mancini was charged with assisting her father's suicide by providing him with a lethal dose of morphine. A judge's decision in her favor is the latest in a series of developments signaling a reluctance of courts and state legislatures to criminalize medical care that may hasten death.
Friday, February 07, 2014
The U.S. recently approved a drug that can quickly cure hepatitis C in many patients. But its high price means the treatment is out of reach for millions of people in the developing world. Now the pill's manufacturer is talking with Indian producers to reduce the treatment cost to $2,000. But critics say the price drop won't be enough.
Thursday, January 30, 2014
Men who take testosterone supplements double their risk of heart attacks, a study finds. That was true for men over 65 and for younger men with heart disease. Testosterone supplements have become increasingly popular as a way to counter flagging libido.
Monday, January 27, 2014
Serving chicken, pigeon or duck for the holiday may be harder this year for some families in China and Hong Kong. As the deadly H7N9 virus continues to spread, officials in China have closed many live poultry markets, while agricultural workers in Hong Kong plan to cull thousands of chickens this week.
Friday, January 10, 2014
Words matter when it comes to medicine. By comparing placebo pills labeled as migraine medicine with medicine labeled placebos, doctors figured out that half of the pain relief of medication comes from a person's belief in its effectiveness.
Friday, December 06, 2013
The only person known to have been cured of AIDS got a bone marrow transplant, so when two AIDS patients in Boston appeared to be free of the virus after transplants, scientists hoped they were cured, too. But the HIV virus has returned in both.
Thursday, December 05, 2013
The first in a new class of drugs that can cure the viral infection that is the leading cause of liver failure and liver cancer is poised for a marketing green light from the Food and Drug Administration. More than 3 million Americans have hepatitis C, but most don't know it.
Monday, December 02, 2013
The administration is pledging $100 million toward a project to stop HIV infections once and for all. There's growing optimism among scientists that it may be possible to get patients' immune systems to control HIV without drugs, or even to eliminate the virus from the cells of infected people someday.
Tuesday, November 05, 2013
The cancellations are making some people angry and many anxious. Opponents of the health law feel vindicated. They all cite the conflict between the cancellation notices and President Obama's repeated promise that people who like their existing health coverage could keep it.
Tuesday, November 05, 2013
More than 12 million Americans buy health insurance on their own, and many are getting cancellation notices because their individual coverage does not meet the standards of the Affordable Care Act. This is causing anxiety and anger — especially since most of these people can't get onto the healthcare.gov website to figure out their options for 2014.
Thursday, October 31, 2013
A monkey virus that's a stand-in for HIV plummeted to undetectable levels when animals got potent antibodies of a type recently discovered in some humans. A single antibody injection was enough to do the job.
Wednesday, October 23, 2013
The news that a baby born HIV-positive in Mississippi stayed HIV-free even though her mother stopped giving her anti-retroviral drugs sparked skepticism earlier this year. But a new report says that the girl is still virus-free at age 3. This could jumpstart a global study on super-early treatment of HIV-positive newborns.
Wednesday, October 23, 2013
A cholera outbreak in Mexico has been traced to the same strain that first appeared in Haiti three years ago. It has appeared in the Dominican Republic and Cuba, too. So far nearly 9,000 people have died in the four countries, and health authorities think it will spread further in the Americas.
Friday, October 18, 2013
The majority of new HIV infections among gay men in the U.S. these days occur within committed couples. So researchers are piloting a strategy that's been successful in Africa. Gay couples in several cities have tried it and say the benefits are unexpected.
Wednesday, September 11, 2013
Pockets of malaria that are resistant to the frontline drug have recently emerged in Southeast Asia. Health workers worry the problem could spread to Africa. To stay ahead of the parasite, scientists have developed a fast way to detect resistant malaria and map its spread through a community.
Sunday, September 01, 2013
Preventive treatment of partially blocked arteries in patients suffering a particular kind of severe heart attack reduces future heart attacks, cardiac deaths and cases of recurrent chest pain by about two-thirds.
Wednesday, August 28, 2013
Disability and illness caused by opioids, amphetamines, cocaine and cannabis increased by more than 50 percent over the two decades prior to 2010. Opioid dependence in particular has become much more common.