Sir John Hayes

Sir John Hayes

Conservative — South Holland and The Deepings

Speaking in the House of Commons on 23 June 2026

Debate

Puberty Blockers

Contribution

Baroness Cass certainly wanted to gather more evidence. The evidence we have shows the damage that puberty blockers can do. We know that the substantial science suggests that they affect bone maturation, cerebral capacity and, of course, fertility. It is certain that there is no compelling evidence that puberty blockers have a beneficial effect. That is why she sought more evidence, as she concluded that there was no compelling evidence that they have a beneficial effect.

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