(b) Obesity has taken over from smoking as the leading preventable cause of death in Australia.
Smoking is still a leading cause of death and illness in Australia, but the Sydney Morning Herald reported that in 2006, obesity had overtaken smoking as a contributor to ill health.  Australia has the highest combined rate of overweight and obesity in the world, and comes second only to the United States when rates of obesity are compared. One in four Australian adults are obese, resulting in an increased risk of cardiovascular disease (including heart attack and stroke), high blood pressure, type 2 diabetes, sleep apnoea, osteoarthritis, psychological problems and reproductive problems. 
Transport accidents accounted for 1,503 deaths in 2010, or 1.0% of all causes of death; 706 deaths were of occupants of a car, 236 motorcycle riders and 227 were pedestrians. Medical complications were classified as the underlying cause of death in 256 persons in Australia in 2004–05 .