Queenslanders are more likely to smoke, be overweight and are less likely to exercise regularly than the average Australian, new data shows.

The Heart Foundation's health director Rachelle Foreman says the Australian Bureau of Statistics health survey shows Queenslanders are leaving themselves at risk of developing heart disease.

The survey found around 30 per cent of Queenslanders have high cholesterol, with many of them not being aware they have it.

And nearly one in five Queenslanders have high blood pressure.

Ms Foreman says heart disease is the state's leading killer and a major cause of premature death and avoidable hospital admissions.

"Eighty per cent of heart disease is preventable," she said.

"If you are overweight or obese, smoke or do not exercise regularly your risk of developing heart disease greatly increases."