Sex and exercise can trigger heart attacks in older people who don't get much of either, a new analysis finds. The risk is low, but it's a good reminder that slackers should change their exercise habits gradually, especially in middle age.

People who exercise regularly have a much smaller risk of having a heart attack immediately after sexual or physical activity, said lead author Dr. Issa Dahabreh of Tufts Medical Center in Boston.

A Texas construction worker horribly disfigured in a power line accident has undergone the nation's first full face transplant in hopes of smiling again and feeling kisses from his 3-year-old daughter.

Dallas Wiens, 25, received a new nose, lips, skin, muscle and nerves from an unidentified dead person in an operation paid for by the U.S. military, which wants to use what is learned to help soldiers with severe facial wounds.

Authorities in Taiwan checking food imports for radiation on Sunday found a shipment of fava beans from southern Japan had been very slightly contaminated, an official said.

The radiation, which was within Taiwan's legal safety limits, was found on 14 kilograms (30.8 pounds) of fava beans from Kagoshima, said Tsai Shu-chen, an official with the Food and Drug Administration.

Japan said radiation levels in spinach and milk from farms near its tsunami-crippled nuclear complex exceeded government safety limits, as emergency teams scrambled Saturday to restore power to the plant so it could cool dangerously overheated fuel.

Firefighters also pumped tons of water directly from the ocean into one of the most troubled areas of the Fukushima Dai-ichi nuclear complex, the cooling pool for used fuel rods at the plant's Unit 3, which are at risk of burning up and sending a broad release of radioactive material into the environment.

At least one person has died from a resurgence of swine flu in Venezuela that infected 12 other people, Health Minister Eugenia Sader said Thursday.

"We have an outbreak of H1N1 in the state of Merida," she said, adding that 12 people have tested positive for the disease and a 32-year-old has died.

China has been hit by a fresh food scandal after the country's largest meat processor was forced to apologize when an illegal additive was reportedly found in some of its pork products.

Henan Shuanghui Investment and Development Co said it had halted operations at one of its subsidiaries while authorities investigate the case, in a statement to the Shenzhen Stock Exchange Wednesday, where it is listed.

An experimental treatment improved symptoms of Parkinson's disease in a mid-stage test, echoing results of an earlier pilot study.

The new research is the first to show positive results in a test of gene therapy against a sham operation in about three dozen U.S. Parkinson's patients.

Japan's nuclear crisis has sparked panic buying of iodine pills, with online bids exceeding $500 for a single packet, but health experts hosed down the hysteria and warned the pills are of limited use.

As fresh blasts rocked a stricken atomic plant on Japan's east coast, and crews worked frantically to cool reactors that emitted dangerous levels of radiation near the facility, jitters spread to Tokyo and beyond

Hungary's government said Friday it is considering a novel way of tightening the public belt -- the introduction of a "hamburger tax".

"The ministries concerned are examining the effects of the introduction of a so-called 'hamburger tax'," Economy Minister Gyorgy Matolcsy said on the Hungarian parliament's website, in a reply to an opposition lawmaker's inquiry.

South Africa's AIDS deaths have fallen by nearly 25 percent due to scaled up access to life-saving drugs, which the government for years had refused to provide, new research has shown.

"The rapid expansion of South Africa’s anti-retroviral program appears to have slowed down the AIDS mortality rate in recent years," said the Actuarial Society of South Africa (ASSA) in a statement.