The Endocrine Society suggests young people with gender-identity concerns be given drugs to block puberty, the BBC reported.
The organization — which claims 14,000 members in more than 100 countries — says the drugs would give adolescents time to decide which gender they prefer.
The treatment was tested in the Netherlands on kids as young as 11; clinics in Canada, Australia, Germany and the U.S. have started prescribing the drugs.
Caleb H. Price, research analyst at Focus on the Family, said young people are in no position to make a decision of this magnitude.
"Teenage years are marked by a confusing maze of feelings that wax and wane on a daily basis," he said. "It is unconscionable for a professional group to push hormone treatment that alters — perhaps irrevocably — natural physical development.
"The endocrinologists have clearly been hijacked by activist groups, lost their credibility and entered into ethical bankruptcy. They've capitulated to the political correct notion that gender is a social construct and can be changed."
— Jennifer Mesko