Health Highlights: Feb. 14, 2008

Please note: This article was published more than one year ago. The facts and conclusions presented may have since changed and may no longer be accurate. And "More information" links may no longer work. Questions about personal health should always be referred to a physician or other health care professional.

Here are some of the latest health and medical news developments, compiled by editors of HealthDay:

555 Americans Killed in All-Terrain Vehicle Accidents in 2006

At least 555 people died in 2006 from accidents involving all-terrain vehicles (ATVs), the U.S. Consumer Product Safety Commission said Thursday.

More than 100 children were among the fatalities, the agency said. It expects the numbers to climb as additional data arrive from hospitals and coroners across the country, the Associated Press reported.

While groups representing consumers and parents have said for years that the vehicles are unsafe, the industry that makes ATVs cites driver error, the wire service reported.

"ATVs have never been shown to be an unsafe product, but there have been bad decisions made by people sitting on the seat," said a spokesman for the Specialty Vehicle Institute of America.

In its annual analysis released Thursday, the CPSC said Pennsylvania has led the nation in ATV deaths since 1982, followed by California, West Virginia, Texas and Kentucky. At least one ATV fatality was reported in each of the 50 states.

In 2005, 666 confirmed ATV deaths were reported. And because the CPSC said it is still analyzing data for that year, the toll could rise to as high as 870, the AP reported.

On the day the report was released, the CPSC announced the recall of 95,000 Polaris-brand ATVs that had potentially defective control panels that could ignite, the wire service said.

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Nearly 1 in 3 U.S. Births Are C-Sections: Report

Nearly one in three American women who gave birth in 2005 did so by Cesarean section, the U.S. Agency for Healthcare Research and Quality said Thursday in its latest News and Numbers report.

The ratio was about one in five in 1995, the agency said in a prepared statement.

The report also noted that:

  • Some 1.3 million women had C-sections in 2005, a 38 percent jump over the 800,000 performed in 1995.
  • Vaginal deliveries in hospitals fell from about 3 million in 1995 to 2.9 million in 2005.
  • Hospitals charged a combined $21.3 billion for patient stays involving vaginal deliveries in 2005, compared to $17.5 billion for those involving C-sections.

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Government-Issued Trailers for Hurricane Victims Pose Risks: CDC

Many of the trailers used to house Gulf Coast victims of hurricanes Katrina and Rita contain toxic levels of formaldehyde fumes, U.S. health officials said Thursday.

Officials from the Centers for Disease Control and Prevention said people living in the government-issued trailers should be moved out as soon as possible because tests showed that fumes from 519 trailers and mobile homes in Louisiana and Mississippi averaged about five times higher than levels found in most modern homes. In some trailers, the levels were nearly 40 times higher, prompting concerns that the residents could come down with breathing problems, the Associated Press reported.

The CDC urged the Federal Emergency Management Agency, which supplied the trailers, to move people from the trailers as quickly as possible, with priority given to families with children, elderly people, or anyone with asthma or other chronic respiratory problems.

"We do not want people exposed to this for very much longer," said Mike McGeehin, director of a CDC division that focuses on environmental hazards.

FEMA provided about 120,000 travel trailers to victims of the 2005 hurricanes Katrina and Rita. In 2006, some occupants began reporting headaches and nosebleeds. The complaints were linked to formaldehyde, a colorless gas with a pungent smell used in the production of plywood and resins, the AP said.

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China Factory in Heparin Case Never Inspected by FDA

The U.S. Food and Drug Administration has never inspected a Chinese factory where the active ingredient in the blood thinner heparin is made, although agency officials stressed it is not yet known whether this plant played a role in recent problems with the now-suspended drug.

While no FDA inspection of the facility has been conducted to date, preparations are being made to perform an inspection as soon as possible, an FDA spokesman said in a statement, the Wall Street Journal reported Thursday.

FDA spokeswoman Heidi Robello told the Associated Press that the agency was also making plans to inspect a finishing plant in New Jersey as soon as possible.

Hundreds of people have suffered severe allergic reactions and at least four people have died recently after being given heparin, and Baxter International has suspended the sale of the drug while it investigates the source of the problem. Baxter is responsible for half of the U.S. supply of heparin. The medication is used in kidney dialysis and heart surgery to ward off the risk of clotting. The active ingredient in the medication is made from pig intestines, but Robello said she did not know whether the pigs used to make the active ingredient came from China.

Baxter Spokeswoman Erin Gardiner told the AP that the company bought the active ingredient from another concern, which she would not identify other than to say it had plants in the United States and China.

Gardiner did tell the Los Angeles Times that the supplier had been manufacturing heparin for more than 30 years, and had supplied Baxter for more than two decades. The plant in China had only been in operation for several years.

The General Accounting Office has said that the FDA appears to inspect only 7 percent of drug-making plants outside the United States, so this latest news is likely to lead to more criticism of the agencys inability to police the nations drug supply, the WSJ reported.

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Month on Fast-Food Diet Damages Liver: Report

Otherwise healthy people who were asked to eat mainly fast food for fourweeks and cut down on their physical activity quickly developed signs of liverdamage and pre-diabetic insulin resistance, Swedish researchers report.

In the study, 18 slim, healthy men and women were asked to reduce their dailyphysical activity to 5,000 steps per day and to consume at least two fast-foodmeals per day, preferably from well known chain restaurants.

The goal: to double daily caloric intake and boost body weight by 10 to 15percent and then observe the effects on the liver.

A second group of healthy adults were asked to continue on their normaldiet.

As reported in the journal Gut, researchers at the University ofLinkoping found that the participants' levels of a particular liver enzyme called alanineaminotransferase (ALT) spiked within a week of being on the fast-food diet andmore than quadrupled during the four-week study period.

In fact, ALT levels reached concentrations that indicated liver damage in 11of the 18 participants, the researchers said. One participant also developedsigns of a condition called "fatty liver," where unhealthy levels of fatcollect in the organ.

The participants on the fast-food regimen also showed a sharp rise in the fatcontent of their liver cells, which is commonly associated with insulinresistance. Cellular resistance to insulin boosts risks for diabetes andcardiovascular disease, the researchers noted.

None of these unhealthy effects were noted in participants who ate normaldiets, the researchers added.

Overall, people on the fast-food/low exercise regimen gained an average ofmore than 14 pounds within 4 weeks, and one person gained more than 26 poundsin just two weeks, the researchers said.

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