Is there a link between CTE brain disease and violent crime?
When Noah Green, a 25-year-old with no known history of violence, crashed his car into a barricade at the Capitol building in Washington DC, killing one police officer, before lunging at others with a knife, his own family were grappling for answers.
“My heart just sank,” his mother, Mazie Green, tells me. It was a murder, which, on the face of it, had nothing to do with American football.
But three years on and speaking publicly for the first time since that day, Mazie says she now believes it has everything to do with American football.
Noah Green’s car after he rammed into a barricade at the Capitol building in Washington DC
Green was shot dead by responding police, and in the days after the killing the FBI recommended that Mazie submit Noah’s brain to be analysed.
The diagnosis came back months later, indicating Green had stage one Chronic Traumatic Encephalopathy, more commonly known as CTE.
It’s a brain disease caused by repetitive blows to the head and it afflicts participants of contact sport, including American football. Symptoms include aggression, paranoia and problems controlling impulses.
Noah Green with mother Mazie and his father
Noah and Mazie
“Noah took big hits,” Mazie says. At Alleghany High School in rural Virginia, Green had played in defence and was voted most valuable player and he later played for Christopher Newport University.
Teammates recall him being dependable and good-natured but Mazie says she noticed changes after he suffered several head injuries.
“He wanted to be tough, to prove himself,” Mazie says, “But there were changes. He would start wearing blankets around his head and I thought it was a teenage thing, but it was because he was so sensitive to the light. Then he would lose his keys and he forgot how to cook, prepare his meals.
“After that, he started with these really bad headaches. One day he said ‘I don’t know what’s wrong with me, mum, I’ve lost 20 pounds…. I feel like I need to leave. I’ve got to get out of the country. They’re going to kill me, the FBI, they’re going to kill me.’
“He was paranoid.”
Mazie Green
Officer William Evans, the police officer who Noah Green killed, left behind two young children. I ask Mazie if she has any message for his family.
“Officer Evans should not have died that day,” she says, “Noah should not have died that day. Someone has to take the responsibility for telling parents what to do if something’s just not quite right with those kids that are out there playing football for entertainment.”
Shannon Terranova, the former spouse of Officer Evans and mother of his two young children, said: “I want to be mindful of all who are impacted by this real-life horror; but it is difficult for me to comprehend any rationalisation of what happened to Billy and the events that led up to his death. I appreciate the efforts in bringing awareness to the long-term implications of bodily trauma caused by sports injuries. However, nothing can justify what Billy’s co-workers and family experienced, saw, and felt on April 2 2021, and every day since.”
Christopher Newport University declined to comment on Noah Green’s case. Alleghany High School did not respond to Sky News’s request for comment.
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How CTE is diagnosed
The casket of US Capitol Police officer William “Billy” Evans. Pic: AP
The question over whether CTE is linked to violent crime has come to the fore after numerous incidents of violent ex-football players.
Former San Francisco 49ers star Phillip Adams shot dead six people in an explosion of violence in 2021.
He murdered doctor Robert Lesslie, his wife, Barbara Lesslie, and two of their grandchildren, Adah, 9, and Noah, 5 at their home in South Carolina.
He also killed James Lewis and Robert Shook, who were working on an air conditioning unit at the house. Analysis of Adams’ brain showed he had severe CTE.
Phillip Adams. Pic: AP
Pic: AP
Kellen Winslow, another former NFL player, was convicted of multiple rapes in 2021.
His lawyer argued for his sentence to be reduced because of what he says was head trauma suffered on the football field. That potential mitigating factor was rejected by a judge.
Kellen Winslow. Pic: AP
Winslow at his sentencing hearing in March 2021. Pic: AP
Most experts say it is hard to say definitively what motivates someone to commit a crime, but the symptoms CTE causes could all contribute. More research into the causes of CTE and what factors might make some people more susceptible is under way.
Sky News was given access to the national sports brain bank in Pittsburgh, Pennsylvania where former professional and amateur American footballers are being urged to donate their brains for study.
Inside the histology laboratory, Dr Julia Kofler slices open a brain with a knife to show me the cross-section.
Brains examined by Dr Julia Kofler for CTE
It is impossible to diagnose CTE with the naked eye so she takes a tiny sample of the brain tissue and loads it onto a slide so it can be analysed under the microscope.
I ask if she thinks there is a link between CTE and violent crime. “It’s really difficult to draw any conclusions about what motivates someone to commit a crime based just on their pathology,” she says, “but we certainly know that neurodegenerative diseases can cause all sorts of different behavioural changes and changes in executive function and judgement, so it certainly could have contributed.”
Dr Julia Kofler
‘We watched him lose himself’
Karen Kinzle Zegel is one of those fighting for more research. Her son, Patrick Risha, had CTE and died by suicide aged 32. He had played American football throughout his childhood and at university.
“We watched him over 10 years, sadly lose himself, lose his dignity,” she says, “He was paranoid, he was argumentative.
“One time there was an incident with him and he said a homeless guy attacked him in Pittsburgh and he broke his hand punching this person. The rage he had was definitely scary.”
Photos of Patrick Risha
Patrick Risha had CTE and died aged 32 after taking his own life
Through her organisation Stop CTE, Karen is campaigning for the brains of those who commit mass violence to be analysed for traumatic injury.
“Every time we’re looking at the symptoms like ‘they lost a job, they, broke up with their girlfriend’.
“Everybody wants to know why, why would someone take another person’s life? But if you’ve dealt with somebody whose brain became unwired you see the lack of empathy. They don’t care about other people, sadly.
“We’re not going back to the root cause, which could be a damaged brain.”
Patrick Risha’s mother, Karen Kinzle Zegel
Concerns about brain injuries have contributed to the growth of flag football, a lesser contact sport which means fewer big hits and not an obvious danger.
But the popularity of the NFL as a spectator sport is enduring. Last week’s Super Bowl final was the most-watched TV event in American history.
But for its stars, the damage may already been done. The human cost of the richest sport league in the world is far too difficult to count.
Sky News contacted the NFL for comment about our report. In response, the NFL provided details of the funding they are giving into CTE-related research, mental health support and the physical safety measures they say they are taking in the sport.
Donald Trump could meet Vladimir Putin in person as early as next week to discuss a ceasefire in Ukraine, a White House official has said.
They said the meeting would be conditional on the Russian president meeting his Ukrainian counterpart Volodymyr Zelenskyy, Sky News’s US partner network NBC News reported.
It came days before the White House’s deadline for Russia to reach a peace deal with Ukraine or face severe economic penalties, which could also target countries buying its oil.
Asked during a news conference at the White House if the talks would take place, Mr Trump said: “There’s a very good prospect that they will.”
He said it had not been determined where the talks would take place, but added: “We had some very good talks with President Putin today.”
However, he said: “I’ve been disappointed before with this one.”
Asked if Mr Putin made any kind of concession to lead to the development, Mr Trump did not give much away, but added: “We’ve been working on this a long time. There are thousands of young people dying, mostly soldiers, but also, you know, missiles being hit into Kyiv and other places.”
More tariffs ‘could happen’
Mr Trump also said he could announce further tariffs on China similar to the 25% he announced on India over its purchases of Russian oil.
“Could happen,” he said, after saying he expected to announce more secondary sanctions intended to pressure Russia into ending its war with Ukraine.
Earlier, he imposed an additional 25% tariff on Indian goods, on top of a previous 25% tariff, over its continued purchases of Russian oil.
India’s foreign ministry spokesperson said the additional tariffs were “unfair, unjustified and unreasonable”.
Vladimir Putin welcomes Steve Witkoff during a meeting in Moscow. Pic: Sputnik/Reuters
It came after Mr Putin held talks with Mr Trump‘s special envoy Steve Witkoff in Moscow, with the meeting lasting around three hours.
In a post on Truth Social, Mr Trump said Mr Witkoff “had a highly productive meeting” with Mr Putin in which “great progress was made”.
He said he had updated America’s European allies, and they will work towards an end to the Russia-Ukraine war “in the days and weeks to come”.
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Correspondents in Washington and Moscow break down a busy day of diplomacy
‘The war must end’
Mr Zelenskyy later said he and Mr Trump spoke on the phone after the meeting. He said “European leaders also participated in the conversation” and “we discussed what was said in Moscow”.
He added: “Our common position with our partners is absolutely clear: The war must end. We all need lasting and reliable peace. Russia must end the war that it started.”
Mr Zelenskyy later said: “It seems that Russia is now more inclined to agree to a ceasefire.”
He added that the pressure on Moscow “is working”, without elaborating, and stressed it was important to make sure Russia does not “deceive us or the United States” when it comes to “the details” of a potential agreement.
America’s vaccine-sceptic health secretary has announced $500m (£375.8m) worth of cuts to their development in the country.
The US health department is cancelling contracts and pulling funding for jabs to fight viruses like COVID-19 and the flu, it was announced on Tuesday.
Robert F Kennedy Jr, known as RFK Jr, said 22 projects developing mRNA vaccines will be halted. It is the latest in a series of decisions to reduce US vaccine programmes.
Read more: Who is Donald Trump’s health chief?
The health secretary has fired the panel that makes vaccine recommendations, reduced recommendations for COVID-19 shots, and refused to endorse vaccines despite a worsening measles outbreak.
RFK Jr claims the US will now prioritise “safer, broader vaccine strategies, like whole-virus vaccines and novel platforms that don’t collapse when viruses mutate”.
Responding to the announcement of cuts, Mike Osterholm, a University of Minnesota expert on infectious diseases and pandemic preparations, said: “I don’t think I’ve seen a more dangerous decision in public health in my 50 years in the business.”
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Is US politics fuelling a deadly measles outbreak?
Dr Paul Offit, a vaccine expert at Children’s Hospital of Philadelphia, said RFK Jr’s move was short-sighted and that mRNA vaccines “certainly saved millions of lives”, including during the pandemic.
MRNA vaccines work by delivering a snippet of genetic code into the body that triggers an immune response, rather than introducing a real version of the virus.
According to the UK Health Security Agency, the “leading advantage of mRNA vaccines is that they can be designed and produced more quickly than traditional vaccines”.
Moderna, which was studying a combo mRNA shot that can tackle COVID and flu for the US health department, previously said it believed mRNA could speed up production of flu jabs compared with traditional vaccines.
Read more from Sky News:
Harry criticises report into charity
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A COVID-19 vaccine during the pandemic. File pic: PA
Scientists are also exploring how mRNA could be used in cancer immunotherapies and in other illnesses.
At the White House earlier this year, billionaire tech entrepreneur Larry Ellison praised mRNA for its potential to treat cancer.
RFK Jr touts ‘effective’ alternative
The health department said the abandoned mRNA projects signal a “shift in vaccine development priorities.”
“Let me be absolutely clear, HHS supports safe, effective vaccines for every American who wants them,” Mr Kennedy said in a statement.
Later, he said work is underway on an alternative – a “universal vaccine” that mimics “natural immunity”.
“It could be effective – we believe it’s going to be effective – against not only coronaviruses, but also flu,” he said.
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