Health & Fitness (238)
ANN ARBOR, Mich. (AP) -- A degenerative eye disease slowly robbed Roger Pontz of his vision.
Diagnosed with retinitis pigmentosa as a teenager, Pontz has been almost completely blind for years. Now, thanks to a high-tech procedure that involved the surgical implantation of a "bionic eye," he's regained enough of his eyesight to catch small glimpses of his wife, grandson and cat.
"It's awesome. It's exciting - seeing something new every day," Pontz said during a recent appointment at the University of Michigan Kellogg Eye Center. The 55-year-old former competitive weightlifter and factory worker is one of four people in the U.S. to receive an artificial retina since the Food and Drug Administration signed off on its use last year.
The facility in Ann Arbor has been the site of all four such surgeries since FDA approval. A fifth is scheduled for next month.
Retinitis pigmentosa is an inherited disease that causes slow but progressive vision loss due to a gradual loss of the light-sensitive retinal cells called rods and cones. Patients experience loss of side vision and night vision, then central vision, which can result in near blindness.
Not all of the 100,000 or so people in the U.S. with retinitis pigmentosa can benefit from the bionic eye. An estimated 10,000 have vision low enough, said Dr. Brian Mech, an executive with Second Sight Medical Products Inc., the Sylmar, Calif.-based company that makes the device. Of those, about 7,500 are eligible for the surgery.
The artificial implant in Pontz's left eye is part of a system developed by Second Sight that includes a small video camera and transmitter housed in a pair of glasses.
Images from the camera are converted into a series of electrical pulses that are transmitted wirelessly to an array of electrodes on the surface of the retina. The pulses stimulate the retina's remaining healthy cells, causing them to relay the signal to the optic nerve.
The visual information then moves to the brain, where it is translated into patterns of light that can be recognized and interpreted, allowing the patient to regain some visual function.
When wearing the glasses, which Pontz refers to as his "eyes," he can identify and grab his cat and figure out that a flash of light is his grandson hightailing it to the kitchen.
The visual improvement is sometimes startling for Pontz and his wife, Terri, who is just as amazed at her husband's progress as he is.
"I said something I never thought I'd say: `Stop staring at me while I'm eating,'" Terri Pontz said.
She drives her husband the nearly 200 miles from tiny Reed City, Mich., to Ann Arbor for check-ups and visits with occupational therapist Ashley Howson, who helps Roger Pontz reawaken his visual memory and learn techniques needed to make the most of his new vision.
At the recent visit, Howson handed Pontz white and black plates, instructed him to move them back and forth in front of light and dark backgrounds and asked that he determine their color.
Back home, Terri Pontz helps her husband practice the techniques he learns in Ann Arbor.
For them, the long hours on the road and the homework assignments are a blessing.
"What's it worth to see again? It's worth everything," Terri Pontz said.
The artificial retina procedure has been performed several-dozen times over the past few years in Europe, and the expectation is that it will find similar success in the U.S., where the University of Michigan is one of 12 centers accepting consultations for patients.
Candidates for the retinal prosthesis must be 25 or older with end-stage retinitis pigmentosa that has progressed to the point of having "bare light" or no light perception in both eyes.
Dr. Thiran Jayasundera, one of two physicians who performed the 4.5-hour surgery on Roger Pontz, is scheduled to discuss his experiences with the retinal prosthesis process during a meeting of the American Society of Cataract and Refractive Surgery on Friday in Boston. He calls it a "game-changer."
Pontz agrees: "I can walk through the house with ease. If that's all I get out of this, it'd be great."
WASHINGTON (AP) -- While scientists believe the universe began with a Big Bang, most Americans put a big question mark on the concept, an Associated Press-GfK poll found.
Yet when it comes to smoking causing cancer or that a genetic code determines who we are, the doubts disappear.
When considering concepts scientists consider truths, Americans have more skepticism than confidence in those that are farther away from our bodies in scope and time: global warming, the age of the Earth and evolution and especially the Big Bang from 13.8 billion years ago.
Rather than quizzing scientific knowledge, the survey asked people to rate their confidence in several statements about science and medicine.
On some, there's broad acceptance. Just 4 percent doubt that smoking causes cancer, 6 percent question whether mental illness is a medical condition that affects the brain and 8 percent are skeptical there's a genetic code inside our cells. More - 15 percent - have doubts about the safety and efficacy of childhood vaccines.
About 4 in 10 say they are not too confident or outright disbelieve that the earth is warming, mostly a result of man-made heat-trapping gases, that the Earth is 4.5 billion years old or that life on Earth evolved through a process of natural selection, though most were at least somewhat confident in each of those concepts. But a narrow majority - 51 percent - questions the Big Bang theory.
Those results depress and upset some of America's top scientists, including several Nobel Prize winners, who vouched for the science in the statements tested, calling them settled scientific facts.
"Science ignorance is pervasive in our society, and these attitudes are reinforced when some of our leaders are openly antagonistic to established facts," said 2013 Nobel Prize in medicine winner Randy Schekman of the University of California, Berkeley.
The poll highlights "the iron triangle of science, religion and politics," said Anthony Leiserowitz, director of the Yale Project on Climate Change Communication.
And scientists know they've got the shakiest leg in the triangle.
To the public "most often values and beliefs trump science" when they conflict, said Alan Leshner, chief executive of the world's largest scientific society, the American Association for the Advancement of Science.
Political and religious values were closely tied to views on science in the poll, with Democrats more apt than Republicans to express confidence in evolution, the Big Bang, the age of the Earth and climate change.
Confidence in evolution, the Big Bang, the age of the Earth and climate change decline sharply as faith in a supreme being rises, according to the poll. Likewise, those who regularly attend religious services or are evangelical Christians express much greater doubts about scientific concepts they may see as contradictory to their faith.
"When you are putting up facts against faith, facts can't argue against faith," said 2012 Nobel Prize winning biochemistry professor Robert Lefkowitz of Duke University. "It makes sense now that science would have made no headway because faith is untestable."
But evolution, the age of the Earth and the Big Bang are all compatible with God, except to Bible literalists, said Francisco Ayala, a former priest and professor of biology, philosophy and logic at the University of California, Irvine.
Beyond religious belief, views on science may be tied to what we see with our own eyes. The closer an issue is to ourselves and the less complicated, the easier it is for people to believe, said John Staudenmaier, a Jesuit priest and historian of technology at the University of Detroit Mercy.
Marsha Brooks, a 59-year-old nanny who lives in Washington, D.C., said she's certain smoking causes cancer because she saw her mother, aunts and uncles, all smokers, die of cancer. But when it comes to the universe beginning with a Big Bang or the Earth being about 4.5 billion years old, she has doubts. She explained: "It could be a lack of knowledge. It seems so far" away.
Jorge Delarosa, a 39-year-old architect from Bridgewater, N.J., pointed to a warm 2012 without a winter and said, "I feel the change. There must be a reason." But when it came to Earth's beginnings 4.5 billion years ago, he has doubts simply because "I wasn't there."
Experience and faith aren't the only things affecting people's views on science. Duke University's Lefkowitz sees "the force of concerted campaigns to discredit scientific fact" as a more striking factor, citing significant interest groups - political, business and religious - campaigning against scientific truths on vaccines, climate change and evolution.
The AP-GfK Poll was conducted March 20-24, 2014, using KnowledgePanel, GfK's probability-based online panel designed to be representative of the U.S. population. It involved online interviews with 1,012 adults and has a margin of sampling error of plus or minus 3.4 percentage points for all respondents.
Respondents were first selected randomly using phone or mail survey methods and were later interviewed online. People selected for KnowledgePanel who didn't otherwise have access to the Internet were provided with the ability to access the Internet at no cost to them.
AP-GfK Poll: HTTP://WWW.AP-GFKPOLL.COM
CHICAGO (AP) -- Despite recommended limits on codeine use in children, the potent painkiller is prescribed for children in at least half a million emergency room visits each year, a study suggests.
Use of the drug in that setting is hardly rampant - just 3 percent of kids' ER visits resulted in a codeine prescription in 2010, the 10-year study found. But with more than 25 million ER visits by children each year, the authors say far too many kids are getting the drug when better options are available.
Codeine is an opiate drug and a genetic variation makes some people metabolize it too quickly, potentially resulting in dangerous side effects including excessive sleepiness and difficulty breathing. The Food and Drug Administration issued its strictest warning last year about a rare risk for life-threatening complications or death in children given the drug after certain surgeries. It advises using codeine for children's pain only if anticipated benefits outweigh the risks.
Another genetic variation makes the drug ineffective for pain relief in as many as a third of patients. Codeine was once commonly used for coughs, but the American Academy of Pediatrics recommends against that use because of the risks and no evidence it relieves coughs.
THE FINE PRINT
Injuries and respiratory symptoms are the top reasons for children's ER visits. The study authors analyzed 2001-10 national data on ER visits for kids aged 3 to 17. The portion of visits where codeine was prescribed dipped slightly during the study. But the authors estimated the yearly number of codeine visits ranged from almost 560,000 to 877,000. Information on any side effects was not included in the data.
The study was published online Monday in Pediatrics.
WHAT DO DOCTORS SAY?
Dr. Kathleen Neville, a pediatric drug expert at Children's Mercy Hospitals and Clinics in Kansas City, said it's likely the numbers have declined since the study ended, given the FDA's black box warning.
Dr. Bradley Berg, medical director of McLane Children's Clinic in Round Rock, Texas, said some ER doctors may have been unaware of pediatricians' guidelines on limiting codeine's use, or recalled getting the drug themselves as children, when its use was more common, with no ill effects.
Dr. Alfred Sacchetti, a spokesman for the American College of Emergency Physicians, says codeine can be safely used in many children, especially older kids. Children typically are monitored in the ER after getting codeine and would not be sent home with a prescription if they had a bad reaction or it didn't work, he said.
Children on codeine who develop breathing problems or unusual sleepiness should get immediate medical attention, the FDA says. The study's lead author, Dr. Sunitha Kaiser, an associate pediatrics professor at the University of California, San Francisco, says doctors and parents should know about codeine's drawbacks and that alternatives are available, including dark honey for coughs in children over age 1; and ibuprofen or the opiate drug hydrocodone, for pain including broken bones.
American Academy of Pediatrics: HTTP://WWW.AAP.ORG
AP Medical Writer Lindsey Tanner can be reached atHTTP://WWW.TWITTER.COM/LINDSEYTANNER
NEW YORK (AP) -- The government's latest report card on food poisoning shows a dip in salmonella cases but an increase in illnesses from bacteria in raw shellfish. The report counts cases in only 10 states for some of the most common causes of foodborne illness, but is believed to be a good indicator of national food poisoning trends. Highlights from Thursday's report from the Centers for Disease Control and Prevention:
WHAT'S MAKING US SICK?
Salmonella remains at the top of the chart, far ahead of most other foodborne germs. Only campylobacter (camp-ee-loh-bak-tur) - a bacteria commonly linked to raw milk and poultry - comes close. Other causes, listeria, shigella (shih-GEHL'-uh) and E. coli, trail behind.
IS FOOD POISONING GETTING WORSE?
Overall, no. Last year, there were no significant changes in most kinds of food poisoning, compared to the previous three years. The new report tallied about 20,000 illnesses and 80 deaths in the 10 states, similar to previous years. The CDC estimates that 1 in 6 Americans get sick from contaminated food each year, though most cases are not reported.
ANY GOOD NEWS?
Yes, for salmonella. The rate of new cases dropped 9 percent - the biggest drop in about a decade. But officials are cautious about making too much of it, since it was compared to a time period that included a big outbreak linked to eggs in 2010. Last year's rate is similar to what it was about five years ago. CDC officials hope new regulatory proposals, like one to prevent salmonella in chicken parts, will keep pushing rates down.
WHAT ABOUT BAD NEWS?
There was in increase in infections from vibrio (VIB'-ree-oh) bacteria found in raw shellfish, like oysters. Last year, cases were up 32 percent from the previous three years and 75 percent from about five years ago. But the numbers remain very small - only 242 of the 20,000 illnesses recorded in the 10 states. Climate change is warming coastal waters in some places, and that may be helping spread some vibrio strains to new locations, said Dr. Robert Tauxe, a CDC food-germ expert. "The warmer the water, the more vibrio," he said. A strain traditionally found in the Pacific Northwest, is now showing up along the East Coast. Tauxe said it might have been spread through water in ships' ballast tanks.
CAN YOU PREVENT FOOD POISONING?
Carefully wash and clean food, and cook meat, poultry and eggs thoroughly. Avoid raw milk and unpasteurized juices. Promptly refrigerate leftovers. A government report last year showed leafy greens like lettuce and spinach were the leading source of food poisoning, and produce in general accounted for nearly half of all illnesses. There were slightly more deaths attributed to poultry than to vegetables in the decade studied.
Food safety: HTTP://WWW.CDC.GOV/FOODSAFETY/
WASHINGTON (AP) -- A surge of eleventh-hour enrollments has improved the outlook for President Barack Obama's health care law, with more people signing up overall and a much-needed spark of interest among young adults.
Nonetheless, Obama's announcement Thursday that 8 million have signed up for subsidized private insurance, and that 35 percent of them are younger than 35, is just a peek at what might be going on with the nation's newest social program.
Still to be announced is what share of those enrolled were previously uninsured - the true test of Obama's Affordable Care Act - and how many actually secured coverage by paying their first month's premiums.
"This thing is working," a confident Obama said of his signature domestic achievement. The days of website woes and canceled policies seemed far behind.
State-by-state statistics, expected as early as next week, will provide a much fuller picture.
A key question is how many of those signed up were young adults, ages 18-34. They're the health care overhaul's most coveted demographic because they're healthier than older adults and their premiums can help cross-subsidize care for the sick. That would help hold down future premium increases.
According to the nonpartisan Kaiser Family Foundation, young adults 18-34 represent about 40 percent of the people eligible to buy coverage in the health care law's new insurance markets. The White House says that group now accounts for 28 percent of those who have picked a plan in states where the federal government is running the insurance exchanges.
Not perfect, but not bad either, said Larry Levitt, an insurance expert with Kaiser.
"Enrollment among young adults ended up lower than their share of the target population but sufficient to keep the market stable in the vast majority of the country," he said.
The nonpartisan Congressional Budget Office is forecasting only a slight average increase in premiums for 2015. Some private insurance experts expect big differences around the country, predicting that insurers will seek noticeably higher premiums, around 6 percent to 8 percent on average.
Republicans were having none of Obama's celebration. A statement from the office of Senate GOP leader Mitch McConnell of Kentucky said he remains committed to repealing the law and replacing it.
The president appeared in the White House briefing room to trumpet the new figures, which beat initial projections by 1 million people
Following the disastrous rollout of the insurance exchanges in October, when HealthCare.gov was virtually unusable, Democrats have been hoping that higher-than-expected results could help their candidates reclaim the political high ground ahead of the midterm elections.
Seven months out from Election Day, they're seeking to turn the page on the law's flawed debut - a strategy underscored last week when Obama announced that Health and Human Services Secretary Kathleen Sebelius, who became the face of the rollout failure, was stepping down.
Polling shows the law remains unpopular in much of the country, yet most Americans say they don't expect it to be entirely repealed, but changed in some way.
With the insurance markets looking increasingly viable, Obama and Democrats were hoping to move the political debate away from repeal and toward efforts to fix lingering issues.
Republicans have been reluctant to pursue fixes for fear of tacitly embracing the overall law. Obama said that it's "absolutely possible" to make improvements but that it would require a change of attitude from Republicans.
AP Medical Writer Carla Johnson in Chicago contributed to this report.