For many Muslims it's the journey of a lifetime: making the Hajj pilgrimage. Almost 3 million faithful, together, in the city of Mecca, Saudi Arabia. But this year, the Hajj could become an incubator for the H1N1 virus.

Microsoft co-founder Paul Allen has been diagnosed with non-Hodgkin's lymphoma, more than 25 years after he was treated for Hodgkin's disease, a spokesman at his company Vulcan Inc. told CNN on Monday.

Cricket is the national sport in Pakistan, but what makes the First Positive Cricket Team stand out from all the other Karachi-based clubs is that its members are all HIV positive.

Heart patients who take certain stomach-acid-suppressing drugs to prevent gastrointestinal bleeding may be at increased risk of dying after a cardiac procedure, according to a study presented at the annual meeting of the American Heart Association (AHA) in Orlando, Florida.

Heart attack patients are exposed to a radiation dose equal to about 725 chest X-rays over the course of their hospital stay, according to research presented Monday at the American Heart Association meeting in Orlando, Florida.

Talbot Kennedy became a quadriplegic on the last day of high school, but he's still an athlete. He plays on a team that's part of United States Quad Rugby Association. And what he and others gain by playing goes beyond the gym.

Women in their 40s should not get routine mammograms for early detection of breast cancer, according to updated guidelines set forth by the U.S. Preventive Services Task Force.

Aside from pushing back the age for routine mammograms, new guidelines recommend against breast self-exams. For some, the advice is sacrilege. For others, it's just fine.

The H1N1 flu virus could cause up to 90,000 U.S. deaths, mainly among children and young adults, if it resurges this fall as expected, according to a presidential advisory panel.