Washington, Nov 3 : A new study has found that the human papillomavirus (HPV) aids in the progression of cervical and head and neck cancer cells by activating a cell signalling pathway that helps the cancers survive, grow and spread.

The research led by University of California, Los Angeles has shown that HPV allows infected cervical and head and neck cancer cells to maintain internal molecular conditions that make the cancers resistant to therapy.

London, November 3: An anti-obesity medicine called tesofensine has been found to be about twice as effective as any previous diet drug.

The drug made by NeuroSearch of Copenhagen, Denmark, was tested on some people who weight more than 100 kilograms.

A research article in the journal The Lancet suggests that those who took the drug lost almost 13 kilograms in 6 months.

The drug makes people feel full early in a meal by increasing the pleasurable effects of three neurotransmitters.