A new report has found the rise of obesity to be linked to a decrease in life expectancy rates for Australians.

From 1981 to 2003, Australia experienced an increase in life expectancy due to the push to quit smoking however, in recent years there has been a slowdown.

The report said that poorer dietary habits such as higher sugar and calorie intake and their effects on health including diabetes, obesity, and high blood pressure are to blame for the deceleration.