Scientists say they have 'completely' cured bowel cancer using a pioneering form of immunotherapy. They report they have achieved a '100 percent cure rate' in mice without any treatment-related toxic effects.

Risk factors include a lack of physical activity, a low intake of fruits and vegetables, being overweight or obese, and alcohol consumption. A new study, published this week, may add long-term antibiotic usage to this list.

Emulsifiers, which are added to most processed foods to aid texture and extend their shelf life, alter gut bacteria in the stomach.