The UN's International Agency for Research on Cancer (IARC) warned that processed meats like sausages and ham cause bowel cancer, and red meat "probably" does too.
In a controversial shift, a leading US medical association urged women to wait until the age of 45 before getting an annual mammogram to screen for breast cancer.
Cigarette smoking will kill about two million Chinese in 2030, double the 2010 toll, said researchers who warned of a "growing epidemic of premature death" in the world's most populous nation.
The Soviet Union's last leader Mikhail Gorbachev, who has been battling diabetes, said his health is improving and that he can walk again with the help of a stick.
Research into brain diseases such as Alzheimer's, Parkinson's and traumatic injury got a boost with a $100 million pledge from a US foundation and seven universities.
Fewer than a quarter of the 15 million people diagnosed with cancer worldwide this year have access to safe and proper surgery.
More than half the world's elderly lack access to long-term care, the International Labour Organization said in a report, condemning the "deplorable" situation facing a rapidly ageing population.
People who do not get enough sleep are four times more likely than their well-rested counterparts to catch a cold.
Anya wasn't even born when Chernobyl exploded nearly 30 years ago, but even today its radioactive fallout stalks her and other Ukrainian youngsters growing up near the disused plant.
Scientists have identified a genetic master-switch that makes some people more prone to obesity than others, and research out suggests it can be turned off, possibly leading to weight loss.
E-cigarettes should be prescribed to smokers to help them quit the habit, British public health experts recommended in a study.
Being overweight more than doubles the risk of bowel cancer in people with a certain gene disorder, but a regular dose of aspirin can reverse the trend.
Former US president Jimmy Carter said that recent liver surgery has shown he has cancer, and that it has spread.
Listening to music before, after and even during surgery reduces anxiety and the need for painkillers, according to a comprehensive study published.
The father of "King of Pop" Michael Jackson was in a Brazilian hospital, after suffering a stroke hours before a huge birthday bash in his honor, doctors said.
People who suffer from psychosis are about three times more likely to be smokers, but scientists have long scratched their heads over which one leads to the other.
Veteran comic actor Jim Carrey has labeled California's governor a "corporate fascist" for ordering tougher rules on mandatory vaccinations, claiming they can poison children.
Billionaire and philanthropist Bill Gates, who spends millions of dollars on AIDS drug development, said he hoped for a vaccine against the disease within the next decade as a cure remains far off.
South Korea has introduced a new law designed to curb a MERS outbreak, tightening quarantine restrictions and imposing jail sentences on those who defy anti-infection measures.
Medical marijuana shows some effectiveness in helping treat chronic pain but there is less evidence of its success in warding off nausea or helping ill patients gain weight.