A public health academic says David Seymour's claims he can reduce funding for the school lunch programme while delivering the same results is a big call to make.  

The Associate Health Minister's unveiled a slimmed down version of the programme he says will save $107 million a year.  

He says they'll reduce costs by bulk buying and serving simple items.  

But Health Coalition Aotearoa Co-Chair Boyd Swinburn told Mike Hosking that what's being called savings is really a withdrawal of investment in childhood nutrition. 

He says we're doing nothing otherwise about problems we have with childhood obesity, rotten teeth, poor mental health, and so on. 

LISTEN ABOVE