Canberra, March 17 -- Extreme heat is a major contributor to heart disease in Australia, responsible for 7.3 percent of the total cardiovascular disease burden, a new study said on Monday.

Between 2003 and 2018, hot weather accounted for nearly 50,000 years of healthy life lost annually, with South Australia experiencing the highest impact and the Northern Territory the lowest, according to the study funded by the Adelaide University China Fee Scholarships and the Australian Research Council Discovery Program.

Under future climate scenarios, the burden of cardiovascular disease is expected to rise steadily. By the 2050s, under a high-emissions scenario, it is projected to more than double compared to the baseline, with the Northern Terr...