The Labour leader, was speaking after the broadcaster Esther Rantzen, who has stage four cancer, this week revealed she was considering ending her life in Switzerland.
There are laws allowing assisted dying for terminally ill people in countries such as Switzerland, Canada and the Netherlands, and in 11 US states. But people in England, Wales and Northern Ireland can face prosecution - and up to 14 years in prison - for assisting someone to end their own life.
Hundreds of people got in touch with the Guardian to share their views on assisted dying. Here, three people on different sides of the debate explain their views.
'To see your loved one die horribly is not something you can unsee'
Warwick Jackson, a 63-year-old based in Shropshire, was together with his wife, Ann, for 37 years.
They met in 1983; Ann was a Black Country girl who was "cool and calm", and "everyone loved her company", Jackson said.
The couple were out walking at Christmas in 2018 when Ann became short of breath. She blamed it on her fitness but was later diagnosed with peritoneal cancer and underwent two rounds of chemotherapy. It held cancer back, but Ann's lungs would fill up with fluid, which Jackson remembers as akin to suffocating or drowning, like "the breath was being squeezed out of her".
Denne historien er fra December 23, 2023-utgaven av The Guardian.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra December 23, 2023-utgaven av The Guardian.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
Pension funds Can chancellor win investment boost with 'megafund'?
What is Rachel Reeves planning?
'I'd pay to play the Ryder Cup': McIlroy's barb at US fee plan
Rory McIlroy says he would pay to play in the Ryder Cup after it emerged that US team members could receive $400,000 each for competing against Europe in New York next year.
Borthwick denies feeling pressure to end losing streak
Steve Borthwick has insisted he is well equipped to block out the pressure of England's current plight after Rassie Erasmus suggested he is under the pump and may feel like he \"has a gun against his head\".
St Pauli quit X and hit out at 'hate machine'
St Pauli have become the first major football club to leave X, describing the social media site as a \"hate machine\", and expressing concern that it may influence the outcome of the forthcoming German election.
Scotland must revamp youth development to keep up, says Clarke
Head coach believes change must come from top as he prepares to face Croatia
Carsley relief as new-look England seize control of their destiny
It was the night when Lee Carsley dropped Harry Kane and came up smelling of roses, this a result not only to avenge the shapeless 2-1 Wembley defeat against Greece in October but to put England on the brink of automatic promotion back into the Nations League's A section.
'I like these challenges, I like being in constant change'
Mayra Ramírez has been on a steep learning curve since moving to Chelsea from Spain in January but would not have it any other way, she tells Suzanne Wrack
Thousands back fight for girls' toilets at local clubs
A coach has sparked a grassroots movement to improve inclusivity in football: by demanding that toilets are opened for girls.
Tyson happy for money to talk amid mayhem
Despite all the hype, veteran knows there is nothing new to say before the charade of his fight with a YouTube star
Raducanu in discussions to hire renowned fitness trainer Nakamura
Former US Open champion has struggled with series of injuries throughout career