North Carolina grew to become the newest state to dam minors from gaining access to gender-transition care, as Republican lawmakers voted on Wednesday to override the governor’s veto of a invoice proscribing hormone remedies, puberty blockers and surgical procedures for younger individuals.

The transfer got here because the State Legislature’s Republican supermajorities marshaled the votes to topple a number of different of Gov. Roy Cooper’s vetoes, reviving laws that limits feminine transgender college students’ participation at school sports activities and restricts what might be taught in faculties about gender and sexual orientation.

North Carolina now joins about 20 different states which have enacted laws blocking entry to transition-related look after minors, with lots of these legal guidelines handed this yr as conservative lawmakers throughout the nation have seized upon L.G.T.B.Q. points.

Supporters of the measures have argued that they defend kids from medical remedies they see as dangerous and unproven. On Wednesday, State Representative Hugh Blackwell, a Republican, stated that the legal guidelines of North Carolina had lengthy taken “extra steps to protect the interests of minors.”

“This legislation is in that same spirit,” he stated, “recognizing the serious and the potentially permanent effects of the procedures that this bill addresses. It simply says that they need to wait until they are 18 to make that kind of decision.”

But critics have contended that denying entry to this type of care might be harmful and detrimental to transgender youths, who’ve excessive charges of hysteria, melancholy and suicide makes an attempt, and whose psychological well being might enhance with gender-affirming care, some analysis has proven.

“You can say that this is not anti-L.G.B.T.Q., but it is,” Senator Lisa Grafstein, a Democrat, advised different lawmakers throughout the debate on Wednesday. “What we’re doing here will hurt people.”

This month, the American Academy of Pediatrics reaffirmed its support of gender-related treatments for kids, whereas additionally commissioning a scientific evaluation of medical analysis on the remedies.

Mr. Cooper, a Democrat, has assailed Republicans for getting swept up in what he described as “political culture wars,” devoting their consideration to focusing on a small and marginalized group of younger individuals as a substitute of to extra urgent points confronting the state.

“North Carolina should continue to let parents and medical professionals make decisions about the best way to offer gender care for their children,” Mr. Cooper stated in a press release issued after he had vetoed the ban on transition-related care in July.

Mr. Cooper additionally invoked the state’s historical past as the primary to cross a invoice, in 2016, that barred transgender individuals from utilizing public restrooms in step with their gender identification, a transfer that unleashed a firestorm of criticism and resulted in firms’ scuttling enlargement plans within the state and nationwide sporting occasions’ being moved elsewhere.

Republicans in North Carolina secured their narrow supermajority within the State House of Representatives this yr after Tricia Cotham, who had been elected as a Democrat from a district exterior Charlotte, modified events three months after she had taken workplace in January.

The change outraged Democrats and was seen by some in her district as a betrayal. Yet the transfer empowered Republicans, who even have a supermajority within the Senate, to steamroll Mr. Cooper’s vetoes, together with, most notably, his attempt to block a 12-week limit on most abortions, instituting the state’s most restrictive abortion coverage in many years.

The invoice on gender-transition care, House Bill 808, was passed by the State Legislature in June. The laws bars medical professionals within the state from prescribing hormone remedy, puberty blockers or gender-transition surgical procedure to anybody below the age of 18. Minors who had already started any of the remedies earlier than Aug. 1 will have the ability to proceed receiving therapy if their medical doctors deem it of their greatest curiosity and if they’ve parental consent, in accordance with the laws.

N.C. Values Coalition, a conservative group that supported the invoice, praised lawmakers for making a “heroic decision” by overriding the veto.

But some lawmakers pleaded to their colleagues in private phrases to resolve towards adopting laws they noticed as pointless.

“As you consider this vote this afternoon, just stop it,” stated State Representative John Autry, a Democrat, who has a granddaughter who’s transgender. “You can stop it right here, right now, today.”