Mr Kuha said he would not eat until the department changed its policy on special needs grants.
"This is not about me, this is about kids going hungry because their mums or dads are refused a food grant."
He was not yet feeling weak but was feeling the cold, despite being rugged up in thermal underwear, four pairs of pants, jumpers, a jacket, scarf and beanie yesterday.
Mr Kuha said the response to his protest had been "mind-boggling" and a little overwhelming. Apart from talkback host Michael Laws, it had all been supportive, he said.
He had refused offers of food or money but would now pass them on to other people who had been refused grants, through foodbanks in Kaikohe and Moerewa.
High-profile Maori GP Dr O'Sullivan was due to visit Mr Kuha last night to offer support and advice.
Dr O'Sullivan said he was not planning to talk Mr Kuha out of his hunger strike but would offer him a medical opinion.