Gay conversion therapy could be outlawed in Queensland under law changes proposed by the Palaszczuk government.

Therapists who use methods such as exorcisms, hugging, behavioural management and marriage to "heal" homosexuals in Queensland would face 18 months in prison under the proposed changes.

Gay conversion therapy will be outlawed under proposed laws. Credit:iStock

"Practices that try to change or suppress a person's sexual orientation or their gender identity have always been immoral and unethical – now they will be illegal," Health Minister Steven Miles said.

"To young people out there who might hear this, who are still figuring out who they are, there is nothing wrong with you.