For the first time, international researchers have identified a strain of gonorrhea that is resistant to treatment with antibiotics, scientists announced at a sex disease research conference Monday.

The common bacterial infection, often called the "clap," has until now been easily treatable with antibiotics but if left alone can cause infertility in women and painful urination and a pus-oozing infection in men.

More than six times the legal limit of radioactive caesium has been found in beef from Fukushima prefecture, home to Japan's crippled nuclear plant, an official statement said Saturday.

The meat came from one of 11 cows shipped this month to Tokyo from a farmer in Minamisoma city, according to the statement by the Tokyo metropolitan government.

The financial crisis that began to hit Europe in mid-2008 reversed a steady, years-long fall in suicides among people of working age, according to a letter published on Friday by The Lancet.

Researchers looked at mortality data provided by 10 European Union countries.

Many people are dying of hunger while fleeing serious drought in Somalia, the U.N. refugee agency said Friday, warning that aid efforts could be overwhelmed by large numbers of malnourished refugees.

"Many people are dying en route from what we hear," said Melissa Fleming, spokeswoman for the U.N. High Commissioner for Refugees in Geneva.

Women who quit smoking once they find out they are pregnant can give birth to a baby weighing the same as a child born to a non-smoker, a British expert told a European fertility meeting Wednesday.

"Once you find you're pregnant, it’s not too late to do something about your smoking," Nick Macklon, a professor of obstetrics and gynecology at the University of Southampton, told Agence France Presse.

Women trying to conceive are better served by a urine test to determine if they are ovulating than the more commonly used calendar method, the makers of the test said at a Stockholm conference Tuesday.

"The calendar method is good to help women to start to understand how their cycle works, but if women are really trying to conceive ... it's not really the best method to use," said Jayne Ellis, head of scientific and medical affairs at SPD Swiss Precision Diagnostics, which makes the Clearblue ovulation test.

A study found Monday that Pfizer's anti-smoking drug Chantix poses significant cardiovascular risks, a claim the pharmaceutical giant immediately denied while defending the drug's benefits.

According to the study published in the Canadian Medical Association Journal, the drug varenicline (brand name Chantix) is linked to a 72 percent greater risk of hospitalization due to a serious adverse cardiovascular event like a heart attack or arrhythmia.

The European Food Safety Agency on Tuesday identified a batch of fenugreek seeds imported from Egypt as the likely suspect in the outbreaks of E. coli disease in both Germany and France.

An EFSA task force set up to track the possible source of the disease said it recommended in consequence that "all efforts be made to prevent any consumer exposure to the suspect seeds".

Lying around for long stretches outside of work doubles the risk of dangerous blood clots in the lungs, according to a study among women released Tuesday.

The study looked at the risk of pulmonary embolism -- blood clots in the lungs that typically arise from a vein constriction in the legs -- among 69,950 female nurses over an 18-year period.

Overweight or obese men, like their female counterparts, have a lower chance of becoming a parent, according to a comparison of sperm quality presented at a European fertility meeting Monday.

In what they described as the largest study of its kind, doctors looked at sperm samples from 1,940 men and matched them to the donor's weight.