Vaping is a far healthier alternative to smoking, health officials have told MPs.

It is much safer than smoking, and there is emerging evidence it helps people quit, the Ministry of Health said during a briefing at Parliament on Wednesday.

Data has shown the risks of second-hand vapour are small because of low levels of toxicants compared to smoking. There's also evidence vapour doesn't kill as many cells as cigarette smoke, the Ministry said.

Health officials recommended banning vaping in areas where you currently can't smoke.

The briefing was part of a planned law change initiated by the previous Government. New regulations around e-cigarettes would legalise their sale and set regulations around displays.

The Government hasn't decided whether the proposed changes will get its backing.