Concerns have been raised over the presence of microplastics in gum.

A health researcher has warned he wouldn't want his own children chewing on gum, due to the health risks associated with consuming the microplastics. 

University of Technology Sydney Associate Professor Brian Oliver says the health risks are 'unknown', but there's a lot of harmful conditions that could happen. 

"Inflammation's sort of the precursor to a lot of chronic conditions, so diabetes, respiratory conditions - so we know that the impetuous is there. What we don't know is actually how much inflammation, and exactly how bad." 

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Concerns have been raised over the presence of microplastics in gum.
A health researcher has warned he wouldn't want his own children chewing on gum, due to the health risks associated with consuming the microplastics.&nbsp;
University of Technology Sydney Associate Professor Brian Oliver says the health risks are 'unknown', but there's a lot of harmful conditions that could happen.&nbsp;
"Inflammation's sort of the precursor to a lot of chronic conditions, so diabetes, respiratory conditions - so we know that the impetuous is there. What we don't know is actually how much inflammation, and exactly how bad."&nbsp;
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With a straight down the middle approach, Heather du Plessis-Allan Drive on Newstalk ZB delivers the very latest news and views to New Zealanders as they wrap up their day.

Heather du Plessis-Allan Drive

Brian Oliver: University of Technology Sydney Associate Professor raises concerns over microplastics in chewing gum

https://api.omny.fm/orgs/7784f840-c291-422a-924b-ad9000bbad71/clips/e22a8a17-c13d-43ca-bfe2-b4010066d965/transcript

Listen to the Heather du Plessis-Allan Drive Full Show Podcast for Friday 17 April.

Get the Heather du Plessis-Allan Drive Full Show Podcast every weekday evening on iHeartRadio, or wherever you get your podcasts.

Listen to the Heather du Plessis-Allan Drive Full Show Podcast for Friday 17 April. 
Get the Heather du Plessis-Allan Drive Full Show Podcast every weekday evening on iHeartRadio, or wherever you get your podcasts.

Full Show Podcast: 17 April 2026 

https://api.omny.fm/orgs/7784f840-c291-422a-924b-ad9000bbad71/clips/7392b89e-89f4-43d6-a377-b42f00767358/transcript

A construction expert says customers could soon face price hikes of 25%.

Stats NZ data shows petrol prices rose almost 19% last month, while diesel prices were up almost 43%.

AUT Professor John Tookey says the industry heavily relies on oil for producing and transporting materials.

He says the destruction of oil wells and processing facilities in the Middle East could take years or decades to rebuild. 

Tookey says, if it continues, there will be major problems which could become the new normal.

LISTEN ABOVE

A construction expert says customers could soon face price hikes of 25%.
Stats NZ data shows petrol prices rose almost 19% last month, while diesel prices were up almost 43%.
AUT Professor John Tookey says the industry heavily relies on oil for producing and transporting materials.
He says the destruction of oil wells and processing facilities in the Middle East could take years or decades to rebuild.&nbsp;
Tookey says, if it continues, there will be major problems which could become the new normal.
LISTEN ABOVE

John Tookey: AUT Professor of Construction Management discusses construction industry crisis

https://api.omny.fm/orgs/7784f840-c291-422a-924b-ad9000bbad71/clips/5971e60e-ccb2-4eb3-bf23-b42f00749e57/transcript

In my opinion, National MPs need to bite the bullet and ask Chris Luxon to step aside.

I don’t enjoy saying this because personally I like Chris Luxon and have a fair amount of respect for him. But I think the chances are now very high that this is going to happen before the election. He is going to lose the leadership and perhaps the only real choice National MPs now have is how messy they allow this to become.

I’ll explain why I think he loses the leadership — and I think it’s simple maths.

National’s polling is really poor. It’s sub-30 in multiple polls. You can’t write those off as rogue results. The numbers are consistently bad and at that level the party is on track to lose around 11 MPs in November. Those 11 MPs do not want to lose their jobs and within that group are the people now agitating for a change of leadership.

For that agitation to stop, National’s polling would need to lift enough to save at least some of those MPs’ seats.
So how does the polling improve? The economy would have to improve. And is that going to happen between now and November? No, it’s not.

In fact, the economy is more likely to come under further pressure, particularly because of the situation in Iran and rising fuel costs. The most likely scenario is that the economy gets worse, National’s polling deteriorates further, and those 11 MPs — and potentially more — lose their jobs at the election.

Meanwhile, the destabilising campaign we saw in the Herald today continues. Someone is deliberately and repeatedly planting stories in the media. That won’t stop. It will continue to drive the polls down and make Luxon look increasingly like a lame-duck Prime Minister.

So if we assume the economy doesn’t improve, the polling doesn’t improve and the destabilising continues, then the most likely outcome is this: about three months out from the election, in the depths of winter, the National Party loses its nerve and rolls Chris Luxon in a desperate attempt to save the furniture.

I see no realistic alternative to that outcome.

That’s scenario one: hope and pray. And yes, that is technically a strategy — maybe something miraculous happens, the way COVID saved Jacinda Ardern in 2020. But that’s hope-and-prayer stuff.

Scenario two is that they pull the pin. They replace Chris Luxon with someone else and call an early election, allowing that person to seek a mandate while still enjoying a honeymoon period — and before winter and the Iran-related pressures make voters even more miserable than they already are.

If I were in the National caucus, I’d be opting for the second scenario. Because the polling is now so consistently bad that a leadership change is likely to happen anyway before the election. They can’t avoid it — they can only choose when it happens and how messy they let it get.

LISTEN ABOVE

In my opinion, National MPs need to bite the bullet and ask Chris Luxon to step aside.
I don’t enjoy saying this because personally I like Chris Luxon and have a fair amount of respect for him. But I think the chances are now very high that this is going to happen before the election. He is going to lose the leadership and perhaps the only real choice National MPs now have is how messy they allow this to become.
I’ll explain why I think he loses the leadership — and I think it’s simple maths.
National’s polling is really poor. It’s sub-30 in multiple polls. You can’t write those off as rogue results. The numbers are consistently bad and at that level the party is on track to lose around 11 MPs in November. Those 11 MPs do not want to lose their jobs and within that group are the people now agitating for a change of leadership.
For that agitation to stop, National’s polling would need to lift enough to save at least some of those MPs’ seats. So how does the polling improve? The economy would have to improve. And is that going to happen between now and November? No, it’s not.
In fact, the economy is more likely to come under further pressure, particularly because of the situation in Iran and rising fuel costs. The most likely scenario is that the economy gets worse, National’s polling deteriorates further, and those 11 MPs — and potentially more — lose their jobs at the election.
Meanwhile, the destabilising campaign we saw in the Herald today continues. Someone is deliberately and repeatedly planting stories in the media. That won’t stop. It will continue to drive the polls down and make Luxon look increasingly like a lame-duck Prime Minister.
So if we assume the economy doesn’t improve, the polling doesn’t improve and the destabilising continues, then the most likely outcome is this: about three months out from the election, in the depths of winter, the National Party loses its nerve and rolls Chris Luxon in a desperate attempt to save the furniture.
I see no realistic alternative to that outcome.
That’s scenario one: hope and pray. And yes, that is technically a strategy — maybe something miraculous happens, the way COVID saved Jacinda Ardern in 2020. But that’s hope-and-prayer stuff.
Scenario two is that they pull the pin. They replace Chris Luxon with someone else and call an early election, allowing that person to seek a mandate while still enjoying a honeymoon period — and before winter and the Iran-related pressures make voters even more miserable than they already are.
If I were in the National caucus, I’d be opting for the second scenario. Because the polling is now so consistently bad that a leadership change is likely to happen anyway before the election. They can’t avoid it — they can only choose when it happens and how messy they let it get.
LISTEN ABOVE

Perspective with Heather du Plessis-Allan: Maths doesn't lie - Luxon is out

https://api.omny.fm/orgs/7784f840-c291-422a-924b-ad9000bbad71/clips/959479a2-90c0-4582-9e79-b42f006ff235/transcript

Brian Oliver: University of Technology Sydney Associate Professor raises concerns over microplastics in chewing gum

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