Mexican authorities said Wednesday that a young girl who gave birth last month was 12 or 13 and not nine as originally reported, and that her stepfather is the father of the newborn.

"DNA tests confirmed that the individual responsible for this case (of sexual abuse) is the stepfather of the minor," Jalisco state prosecutor Tomas Coronado said at a press conference.

Children born to women who started taking folic acid supplements four to eight weeks before pregnancy appear to be at a lower risk of autism, a study showed Tuesday.

Pal Suren of the Norwegian Institute of Public Health and colleagues looked into the use of folic acid supplements before and during early pregnancy, and any impact on the later risk of various disorders on the autism spectrum.

Cancer rates in Europe are generally falling, but lung cancer is poised to overtake breast cancer as the disease's biggest killer of women, a study published on Wednesday said.

In 2013, about 1.31 million people -- some 737,000 men and 576,000 women -- will die of cancer in the 27-nation European Union (EU), researchers said.

British health authorities said on Wednesday they would not recommend Jakavi, a drug produced by Swiss pharmaceutical company Novartis to treat a rare form of blood cancer, deeming it too expensive.

Jakavi, or Ruxolitinib, was "clinically effective but could not be considered a cost-effective use of (the National Health Services') resources," the National Institute for Health and Clinical Excellence (NICE) said in a statement.

A three-year-old Cambodian girl has died from bird flu, bringing the country's toll from the deadly virus to six so far this year, the World Health Organisation said Wednesday.

The girl, from the southern province of Kampot, died in a children's hospital in the capital Phnom Penh, the WHO said in a joint statement with the Cambodian health ministry.

Russian lawmakers on Tuesday passed on third and final reading a bill banning smoking in public places, a major pillar of a Kremlin drive to improve health in the nicotine-addicted country.

In the State Duma lower house, 441 deputies voted for the measure with one against, Russian news agencies reported.

Want to know how much a hip replacement will cost? Many hospitals won't be able to tell you, at least not right away — if at all. And if you shop around and find centers that can quote a price, the amounts could vary astronomically, a study found.

Routine hip replacement surgery on a healthy patient without insurance may cost as little as $11,000 — or up to nearly $126,000.

Salt has quietly been slipping out of dozens of the most familiar foods in brand-name America, from Butterball turkeys to Uncle Ben's flavored rice dishes to Goya canned beans.

A Kraft American cheese single has 18 percent less salt than it did three years ago. The salt in a dollop of Ragu Old World Style pasta sauce is down by 20 percent. A handful of honey Teddy Grahams has 33 percent less salt. A squirt of Heinz ketchup is 15 percent less salty.

They play badminton, kick a ball around and huddle over computer games just like normal children.

Except that they are recovering drug addicts aged around three to 12, representing a growing proportion of drug users in war-torn Afghanistan.

A New Zealand woman's 10-litre (2.2 gallon) a day Coca-Cola habit was a major factor in her death, a coroner found Tuesday, urging the soft drink giant to put health warnings on its caffeinated products.

Natasha Harris, a 30-year-old mother of eight from Invercargill in southern New Zealand, drank huge amounts of the fizzy beverage for years before her death in February 2010, coroner David Crerar found.