Chronic diseases like cancer, diabetes, and lung cancer are now the leading cause of deaths worldwide, according to a new World Health Organization report.

U.N. Secretary-General Ban Ki-moon is calling the situation a "public health emergency in slow motion."

Chronic diseases cause nearly two-thirds of all deaths worldwide. In the U.S., chronic illnesses kill nearly nine out of 10 people.

The common risk factors behind most those ailments are bad habits.

Next week, the U.N. General Assembly will hold its first summit to address chronic diseases.
  
They will focus on risk factors like tobacco use, alcohol abuse, unhealthy diets, and physical inactivity.