Sex offenders will now be chemically castrated in US state

Alabama Governor Kay Ivey has signed into law legislation that would require certain sex offenders to be chemically castrated before they are paroled.

Governor Ivey’s press office said she had signed the bill, which would take effect later this year.

The measure applies to sex offenders convicted of certain crimes involving children younger than 13.

Chemical castration involves injection of medication that blocks testosterone production.

Governor Kay Ivey signing into law the Alabama Human Life Protection Act. Source: AAP

Under the measure, certain offenders must receive the medication before they are paroled from prison.

A judge would decide when the medication could be stopped.

Seven other states and US territories – California, Florida, Guam, Iowa, Louisiana, Montana and Wisconsin – have authorised chemical castration, but it’s unclear how often it’s used.

Some legal groups have raised concerns about use of forced medication.

Chemical castration involves injection of medication that blocks testosterone production. Source: File/Getty Images

"It certainly presents serious issues about involuntary medical treatment, informed consent, the right to privacy, and cruel and unusual punishment,” Randall Marshall, the executive director of the Alabama chapter of the American Civil Liberties Union, told CNN in a statement

“And it is a return, if you will, to the dark ages.”

The move follows Alabama's adoption of one of the country's most stringent abortion laws.

The legislation makes performing an abortion at any stage of pregnancy a felony punishable by up to 99 years or life in prison.

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