A registered GP has concerns about the issue of puberty blockers being handled by politicians.

No child or young person experiencing gender dysphoria or incongruence will be able to start taking gonadotropin-releasing hormones from December 19.

Health Minister Simeon Brown says Cabinet has agreed to new settings until the outcomes of a major clinical trial in the UK – expected in 2031.

Dr John Cameron told Mike Hosking he commends the move but is unsure about the motivations.

He believes it has been made on health grounds, but still thinks it needs to leave the political arena.

Cameron says the safety of puberty blockers has been a topic of discussion in medical circles for a long time.

He told Hosking, if they weren't safe, they would be banned across the board.

But he says there is uncertainty on their long-term safety and effectiveness.

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