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Very early in my career, I was invited to afternoon tea with the head of the Commonwealth Institute of Health at Sydney University, where I worked. The best bone china was produced and pleasantries exchanged. The agenda soon became clear.

He laboured into a parable about the difference between young and old bulls when locked in a small yard. He told me young bulls run hard at the gate, exhausting and sometimes harming themselves.

But old bulls are generally patient and placid. They always know the farmer will open the gate and they鈥檒l walk out and soon get among the pasture and the cows.

Young bulls should learn from old bulls, he told me.

I knew exactly why he鈥檇 called me. For some months, I鈥檇 been in the forefront of a small group of public health people who were confronting the advertising industry鈥檚 self-regulation body with data about the appeal of Paul Hogan, who fronted the massively successful Winfield cigarette advertising campaign. Hogan鈥檚 own TV program had huge appeal to children. The advertising campaign was, therefore, in flagrant breach of the industry鈥檚 own guidelines and so needed to be stopped.

After 18 months of trying to ignore us,聽. We quickly discovered while the advertising industry could ignore our letters, going public turned 10,000 watt arc lights on the self-regulation farce. Over that time the media often interviewed us. A headline after we won said our slingshot had cut down the advertising ogre. Hogan said he鈥檇 been sent from the field for kicking too many goals. That was in fact our argument.

My 鈥測oung and old bulls鈥� mentor later told me he鈥檇 been tapped by the Vice Chancellor to tighten the reins, after receiving complaints from connections with the tobacco industry.

Then, and even today, there still remain large remnants of the attitude in universities that scientists and researchers should avoid talking to the media. News media are frequently disdained by academics as trivialising and superficial, something from which those with ambitions of gravitas should keep well away.

Knowing someone, but never meeting

Early in Nicola Roxon鈥檚 tenure as Australian health minister I approached her after a talk she gave at a conference. 鈥淚 don鈥檛 think we鈥檝e ever met,鈥� I said. 鈥淣o, but I feel I鈥檝e known you all my adult life,鈥� she replied.

This could have only meant she knew me through the media.

There is an abundance of research showing people get a huge amount of their information and understanding of health issues from the news media. Equally, most politicians and their advisors rarely read scholarly papers in research journals. They form their understandings of the issues in their portfolio in a variety of ways. But like us all, they are daily exposed to information and discussion about health and medicine through the media they consume voraciously every day.

Don鈥檛 just 鈥榮tick to the facts鈥�

Some critics of researchers with media profiles argue researchers should just 鈥渟tick to the facts鈥� in media interviews. Our study participants saw this as na茂ve because 鈥減eople always want to know what the policy implications are鈥�.

A total of 94% of those we interviewed disagreed with the view it was inappropriate to express opinions in the media about public health policy. Journalists might begin with a research finding or an expert clarification of a new report. But they invariably then asked what needed to be 鈥渄one鈥� about the problem, typically by government.

Journalists and audiences would meet with incredulity any researcher who tried to end an interview when there were questions about policy reform 鈥渙ughts鈥�, or claimed to have no opinion on what should be done. We expect those who know most about health problems to have views about what should be done to solve them and the courage to put these forward, even if they imply criticism of governments or powerful interest groups.

Speak up, speak up

Trump鈥檚 recent聽聽of all government environmental agency staff is surely the start of a process that will spread to government funded universities in the USA. There has never been a more important time for researchers all over the world to speak up about their work, it鈥檚 implications and how societies and governments should act on it.

I鈥檝e just published a collection of 71 of my essays and op eds across a large variety of public health issues. Like this column, the book is called Smoke Signals, and is published by the Sydney University Press imprint, Darlington Press. It鈥檚 available in聽.

聽is an Emeritus Professor in the School of Public Health. The full opinion piece can be read on聽