In a significant ruling, the New Jersey Supreme Court declared that expert testimony regarding shaken baby syndrome, also referred to as abusive head trauma, is scientifically unreliable and inadmissible in two pending trials. On November 20, 2025, the court's 6-1 decision arose from trials involving two men charged in separate cases, whose young victims displayed symptoms linked to shaken baby syndrome. The justices emphasized the lack of acceptance of this diagnosis within the biomechanical community, stressing that no testing supports the assertion that human force can yield the symptoms commonly associated with this syndrome. Despite a long history of use in legal contexts, the court's ruling follows increasing scrutiny of shaken baby syndrome diagnoses, which are frequently cited as a primary cause of fatal head injuries in children under the age of two. The symptoms can include bleeding in the brain and eyes, which are irreversible and detrimental. Prosecutors and medical associations affirm that those symptoms are critical indicators of abuse, with the National Center on Shaken Baby Syndrome noting over 1,000 reported cases annually in the United States. However, dissenting Justice Rachel Wainer Apter argued that the majority opinion undervalues the consensus of major medical societies worldwide, which continue to recognize the validity of shaken baby syndrome diagnoses. She pointed out that all U.S. states permit courts to consider such testimony, emphasizing that no court had previously ruled the evidence as unreliable or inadmissible in a trial setting. Her dissent highlights significant concerns about the implications of this ruling, especially for vulnerable children and questions surrounding parental rights. The decision has broad implications not only for ongoing criminal trials but also for future cases involving similar charges. The public defender's office commended the ruling as a landmark moment, reinforcing the necessity of ensuring that criminal cases rely on scientifically validated evidence. They expressed concerns that allowing questionable expert testimony could unjustly influence jury outcomes, with potential consequences for the accused, including wrongful convictions. In light of this ruling, the tension between evolving medical standards and the legal system's practices presents a complex landscape regarding child abuse cases involving shaken baby syndrome.