Australia's largest telco has invested more than $235 million in its Telstra Health division since 2013 to acquire, invest in or partner with 18 health-related companies, but as expected it is reporting a loss on its new business ventures as operating expenses increase.

Reporting its full-year financial results last week, the headlines were dominated by Telstra's announcement that it will invest up to $3 billion over the next three years on digitisation and networks, including $100m for its core network to improve resilience and reliability and a further $100m investment to increase ADSL capacity to meet demand for video streaming.