Heart disease Heart disease our biggest killer Heart disease being the biggest killer of Colac district people has come as no surprise to a Beeac-based researcher. By Ruby MansonAugust 11, 2020 Heart disease research looks at rural lifestyles A Colac district dietician hopes her research into heart disease can lessen the burdens of disadvantaged rural patients with the condition. By A Staff ReporterJune 26, 2017