The majority of children in a landmark study on puberty blockers experienced positive or negative changes in their mental health, new analysis suggests.
The original study of 44 children, who all took the controversial drugs for a year or more, found no mental health impact - neither benefits nor harm.
But a re-analysis of that data now suggests 34% saw their mental health deteriorate, while 29% improved.
The new study has not been in a peer-reviewed journal yet.
The authors say they felt there was an urgency in getting the information into the public domain.
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