The president of the non-profit organisation Exit International told the Otago Daily Times law changes on voluntary euthanasia would come from pressure applied by the "baby-boomer" generation.
According to Statistics New Zealand, nearly a quarter of New Zealanders belong to the baby-boomer generation - those born between 1946 and 1965.
Dr Nitschke, who has been dubbed Dr Death, said, "We are seeing questions being raised from this generation now as they look after their ageing parents."
There were enough examples of people wanting to end their life by voluntary euthanasia in New Zealand for the Minister of Health to review the controversial subject, he said.
A spokesman for Health Minister Tony Ryall said Parliament had rejected voluntary euthanasia and the Government would not be entering into a public debate on the subject.
Voluntary euthanasia is illegal in New Zealand.
Dr Nitschke said he knew of New Zealanders who had travelled overseas to buy drugs to assist with suicide, and others who chose to end their life by other means.
Twenty people attended the public meeting at Quality Hotel Cargills, while a smaller number, who had to be over the age of 55 and sign a disclaimer, attended a closed workshop.
