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Prof Avni Sali of Swinburne University's School of Integrative Medicine in Melbourne said the key to longevity was within reach.

He said enough was now known about how to minimise the risk of killer diseases such as some cancers and heart disease to avoid serious threats to lifespan.

The tools for a long life, including regular exercise, a diet high in fruit and vegetables and being smoke-free, were well known and just had to be applied, he said.

"People have the potential to live to 130," he said. "With all we now know about good health, there's no reason that we can't."

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