Jon Snow’s wife, Dr Precious Lunga, has spoken publicly for the first time about the veteran broadcaster’s Alzheimer’s diagnosis, revealing the subtle changes that first led her to fear something was wrong.
The Zimbabwean-born epidemiologist and neuroscientist said Jon became increasingly forgetful after experiencing a period of depression following his retirement from Channel 4 News in 2021.
Precious began quietly recording examples of his changing behaviour, creating what she described as a detailed catalogue of moments that would later become crucial to securing the correct diagnosis.
Although Jon initially performed extremely well in standard cognitive assessments, further investigation and a specialist scan eventually confirmed that he had Alzheimer’s disease.
Speaking to Anita Rani on BBC Radio 4’s Woman’s Hour, Precious said the couple also experienced the stigma that can surround dementia, feeling that some people had effectively “written off” her husband once they learned of his condition.
She stressed that this did not necessarily come from cruelty but often from fear and a lack of understanding.
“Yes, we felt that,” she said when asked whether people had treated Jon differently following the diagnosis.
“Not out of malice — more from a lack of understanding about what happens when you have Alzheimer’s disease.”
Precious explained that dementia remains frightening to many people partly because it forces them to confront the possibility that they or somebody they love could develop the condition.
“It comes with a lot of stigma, and people often want to look away,” she said.
“We wanted people to start having a conversation about it.”
Jon, 78, stepped down from Channel 4 News in December 2021 after presenting the programme for more than three decades.
According to Precious, leaving the newsroom and the colleagues who had been central to his life had a profound emotional impact.
“After he retired, he went into a deep depression,” she said.
“He missed his colleagues and his work. That lasted for about six months.”
Precious said that after this period she began noticing symptoms, particularly forgetfulness.
Depression has been associated with dementia risk, although the relationship is complex and it is not always clear whether depression is a cause, a risk marker or an early feature of cognitive change.
Because of her scientific background, Precious recognised that the changes warranted further attention.
“I noticed he was becoming more forgetful and, as a neuroscientist, I picked up on it quite quickly,” she explained.
The couple attended medical appointments, while Precious also sought advice from professional colleagues who encouraged them to continue pursuing answers.
However, the process was not straightforward.
Jon performed exceptionally well during his initial cognitive tests, creating the impression that there was no significant problem.
“We saw a specialist in 2023,” Precious said.
“He passed the cognitive tests with flying colours, but a different type of scan told a different story.”
Her written observations ultimately helped doctors understand what the standard tests had not revealed.
“I had a record of occasional behaviours that I had noticed over time and had written down,” she said.
“I had built up a catalogue of information.”
Precious described the diagnostic process as a form of detective work, requiring doctors to combine the scan results with the patterns she had observed at home.
“From all of that, we concluded that he did have Alzheimer’s disease,” she explained.
Jon was diagnosed at an early stage, which allowed the couple to begin planning and access medication intended to help manage his symptoms.
Precious said early diagnosis can offer patients and families an opportunity to improve quality of life, seek support and prepare for the future.
Her scientific knowledge helped her understand the disease, but she admitted that knowing about Alzheimer’s in theory was very different from experiencing it within her marriage.
“What has helped me cope is having a better understanding of the condition and seeking out reliable sources of information,” she said.
When Jon was diagnosed, the couple were given written guidance explaining what they might expect and how they could simplify and prepare their lives.
Initially, however, Jon wanted to keep the diagnosis private.
Precious said he struggled with the idea of sharing such personal information with the world, despite having spent his career in public life.
He later changed his mind after considering the effect his voice could have on other people affected by dementia.
“He said, ‘If I don’t speak out, who will?’” Precious recalled.
Alzheimer’s had affected Jon’s mother, giving him another personal reason to challenge the silence and shame that can surround the disease.
Precious said her husband felt strongly that a dementia diagnosis should not result in someone being treated as though their life, personality or contribution had suddenly ended.
“You don’t suddenly fall off a cliff,” she said.
“It’s a gradual deterioration. It doesn’t mean you can’t continue to contribute to the world.”
The couple waited several months before telling relatives about the diagnosis.
Precious explained that they initially attempted to manage privately, but eventually realised they needed support.
“Once it’s out in the open, you’re also telling yourself that this is real,” she said.
Informing their family was a profoundly emotional moment.
“I burst into tears when I told my family, but they have been incredibly supportive,” Precious recalled.
“That helped a great deal.”
She said receiving the diagnosis forced them to reconsider the future they had imagined after Jon’s retirement.
Instead of enjoying the unrestricted life they had planned, they had to accept that Alzheimer’s would gradually change their relationship and daily routines.
“It was awful to accept that our lives were changing,” she said.
“The disease is a process.”
After living with the diagnosis privately, the couple agreed to make a documentary offering an intimate view of their experience.
Jon Snow: A Last Big Story follows the former newsreader as he navigates Alzheimer’s while investigating the impact of a mining disaster on a community in Zambia.
Precious admitted feeling nervous about allowing cameras into their daily lives.
However, she was encouraged by the possibility that their openness could help others.
“I’m just one of more than a million people affected by Alzheimer’s,” she said, explaining that the number includes both those living with dementia and the relatives caring for them.
“I thought sharing our story might help others, and that helped me get over the nervousness.”
The documentary unexpectedly developed into a fresh journalistic investigation while Jon and Precious were sitting near the Zambezi River.
A local woman began speaking about an environmental disaster linked to mining.
Jon immediately began asking questions about what had happened, why the issue had received so little coverage and what could be done.
Precious said the former Channel 4 News presenter suddenly “lit up” as his lifelong journalistic instincts returned.
“He loved the hunt for the story — the journalistic pursuit of finding out what had happened, what was happening in the community and what people were experiencing,” she said.
The programme’s production team had originally travelled to film Jon’s life with Alzheimer’s but decided to follow the investigation.
Precious acknowledged that she felt worried about the possible risks and wanted to ensure the proper permissions and safeguarding measures were in place.
Yet she also recognised how meaningful it was for Jon to return to the work that had defined him.
His response demonstrated precisely why she objects to the idea that someone should be dismissed after receiving a dementia diagnosis.
Jon was still curious, outraged by injustice and determined to tell stories that otherwise might remain hidden.
Precious has become his primary caregiver, a role she balances alongside running a health-technology start-up and managing other family responsibilities.
She admitted that caring for someone with Alzheimer’s can be exhausting and said she tries to preserve occasional time for herself.
At least once a month, she attempts to take a break, perhaps spending a weekend away.
She also practises yoga when possible and listens to reminders from her older sister Pauline that she needs to pause.
“It’s hard,” Precious admitted.
“Finding the right balance is a constant juggling act. Every day is different, and it’s about continually adapting.”
The couple now try to live more fully in the present rather than focusing exclusively on what the disease may bring.
“It’s not just about surviving,” Precious said.
“The question becomes: how can we live and thrive?”
She revealed that Jon continues to enjoy music, particularly playing the piano.
Although he once repeated the same pieces, he has recently become more experimental, playing for longer and improvising with different chords and melodies.
He remains particularly fond of Bach.
Jon also continues to enjoy travelling, even though people with dementia are frequently advised to maintain predictable routines.
For him, exploring unfamiliar places has always been fundamental to his identity as a journalist.
“He loves going on adventures and visiting beautiful places,” Precious said.
“Travelling and seeing the world has always been part of who he is.”
The couple married on the Caribbean island of Mustique in 2010 after being together for nine years.
They have previously dismissed criticism of their age difference, with Jon praising Precious’s maturity and intellect.
Before their relationship, he spent 35 years with human-rights lawyer Madeleine Colvin, with whom he has two daughters.
Since publicly revealing his diagnosis, Jon has received an enormous wave of support from viewers, colleagues and public figures.
Prime Minister Sir Keir Starmer described him as a giant of journalism, while thousands of people visited the Alzheimer’s Society website seeking information.
The number using its online symptom checker reportedly more than doubled following Jon’s announcement.
Jon said he had been overwhelmed by the affection shown to him and was encouraged that his disclosure had prompted others to learn about dementia.
“As a journalist, you never expect to become the story,” he said.
“But it’s heartening to know that sharing my experience has contributed to a surge in visits to Alzheimer’s Society’s website.”
He added that while a dementia diagnosis can turn a person’s world upside down, he believes it is better to know.
Precious ended her interview with a similarly hopeful message.
Alzheimer’s may have changed their expected future, but she insisted that it had not removed the possibility of joy, creativity, adventure or purpose.
“There is always hope — hope for a life well lived,” she said.
Her central message was that dementia should never be treated as a source of shame.
A diagnosis does not erase someone’s abilities or immediately end their meaningful involvement in the world.
Jon Snow: A Last Big Story is scheduled to air on Channel 4 at 8pm on June 20.
For Jon and Precious, the documentary represents more than an account of illness.
It shows a celebrated journalist continuing to follow his instincts, seek answers and contribute — while challenging the damaging assumption that Alzheimer’s means a person should simply be written off.
