Richard Knox appears in the following:
Monday, August 05, 2013
The question of how to treat ductal carcinoma in situ is roiling the medical profession, and making for tough choices for women. The condition may never become invasive cancer. But some women choose to have mastectomies rather than live with uncertainty.
Wednesday, July 31, 2013
A Philadelphia woman who allegedly gave her 93-year-old father a vial of morphine is facing prosecution in Pennsylvania. Most state laws prohibit assisted suicide, but prosecutions are becoming increasingly rare.
Monday, July 29, 2013
Most people get diagnosed with lung cancer when it's too late to effectively treat it. A federal panel is trying to improve the odds by saying that longtime smokers and former smokers should get annual CT scans to check for lung cancer.
Friday, July 19, 2013
One study finds that women who have been vaccinated against HPV are much less likely to have throat infections with the virus. Since the vaccine helps reduce risk of some cancers, scientists think it might turn out to be effective against throat cancers, too.
Thursday, July 18, 2013
Healthy life expectancy is lowest for people in the South, a study finds. People living in the West, Northeast and Great Plains tend to be doing better. But staying healthy is about more than just geography. Healthy habits and access to good health care count, too.
Thursday, July 18, 2013
Officials in Sheboygan, Wis., scrambled to contain a deadly, drug-resistant form of tuberculosis. An outbreak there serves as a reminder that the contagious disease still poses a threat in the U.S. Treating just nine cases will take months and cost millions of dollars.
Thursday, June 20, 2013
Middle East Respiratory Syndrome emerged a year ago in Saudi Arabia, although the world didn't find out about it until September, when researchers said it was caused by a previously unknown virus that's in the same family as SARS.
Wednesday, June 19, 2013
A vaccine against a virus that causes cervical cancer has cut infections among teenage girls by over half in the first four years of use, scientists report. Only about one-third of girls in that age group have received the recommended shots.
Thursday, June 13, 2013
Needle sharing and drug use put an estimated 4,000 people at risk for contracting HIV every year. Now, the same medications that are used to treat HIV-positive individuals might also protect the uninfected before they engage in risky behavior.
Monday, June 10, 2013
Is the world on the verge of a pandemic? There are three reasons to think so. Two flu viruses are active, and a virus that bears a resemblance to SARS has cropped up in the Middle East. Each has devastating potential, but many early warnings of past pandemics have failed to materialize.
Thursday, June 06, 2013
At issue is a controversial study of more than 1,300 severely premature infants that looked at how much oxygen they should receive after birth. This spring, the federal Office for Human Research Protections criticized the scientists who ran the study for failing to tell parents enough about the risks.
Tuesday, June 04, 2013
The goal is to counter drug resistance, which is largely a consequence of antibiotics overuse. Supporters say the plan would entice companies back into the market because it would be much cheaper to gain approval. But critics call it "a tragedy of monumental proportions."
Monday, June 03, 2013
Tuberculosis is much less of a health threat in the United States than it is in other countries. But a family in Boston discovered that even here, no one is immune from this ancient foe. More than a dozen family members were infected with TB, and matriarch Judy Williams died at age 59.
Friday, May 31, 2013
Mastectomies have become increasingly popular for women with breast cancer. That's a big turnaround from the 1980s, when women abandoned mastectomy in favor of breast-saving lumpectomy.
Thursday, May 23, 2013
The virus's ability to move between these mammals might not bode well for humans. So far, it appears that H7N9 doesn't pass easily between people, but it could mutate over time and pose more of a threat.
Monday, May 13, 2013
SARS burst on the scene in 2003 after one man infected travelers staying on the same floor of a Hong Kong hotel. Now that a new virus with similarities to SARS has spread from person to person, public health officials are urging hospitals to be on guard.
Wednesday, May 08, 2013
Those people who have contracted the H7N9 virus have become very sick. And unlike the older bird flu virus, this one shows some adaptation to mammals, making it a matter of concern. But it doesn't make chickens sick, posing unique difficulties in fighting this kind of flu.
Thursday, May 02, 2013
Fewer than three weeks after they were severely injured in the Boston Marathon bombings, Celeste Corcoran and her 18-year-old daughter, Sydney, are entering a new phase of recovery and rehabilitation. Part of their healing is emotional, not physical.
Wednesday, May 01, 2013
As victims of the Boston Marathon bombings leave the hospital or prepare to, their stories are beginning to pour out. Celeste Corcoran and her daughter, Sydney, both suffered grievous leg injuries. Their accounts give a fuller toll of the attack and the challenges that lie ahead.
Thursday, April 25, 2013
When researchers turned on a gene for the hormone in the livers of diabetic lab mice, the number of insulin-making cells in their pancreas glands tripled within 10 days. Although the research was conducted in animals, the scientists say the findings could be relevant for humans.