Ms Doyle’s husband Rob said she was taken to hospital after he found her “unresponsive”.
It comes after an inquiry into allegations of bullying at the channel.
The probe, conducted by law firm Capital Law, published its report on Wednesday.
It found Ms Doyle’s leadership style to be “dictatorial” and “creating a culture of fear”.
Ms Doyle has previously claimed she suffered “a sustained pattern of retaliation, unfair treatment, and wider bullying” at the hands of S4C’s chairman.
More on Wales
Related Topics:
In a statement issued on Wednesday, members of the S4C Authority – the body which oversees the management of the broadcaster – said they “would like to say sorry to those who have had to tolerate unacceptable behaviours in the workplace and for the upset that this has caused”.
S4C said the chairman had nothing further to add to Wednesday’s statement.
Mr Doyle said the report was “heavily biased” and that its framing was “cruel”.
He added the last 24 hours had seen his wife “torn apart in the media after an exceptional 30-year career because of a one-sided report”.
Mr Doyle claimed the report was “designed to be an assassination of her character”.
A DCMS spokesperson said: “Our thoughts and prayers are with Ms Doyle and her family at this incredibly difficult time, and we wish her a speedy return to health.
“We expect the board of S4C to address the issues identified in the independent investigation by Capital Law as a matter of urgency. We have been in regular contact with S4C throughout this investigation and will remain so.
“Public service broadcasters, like every organisation, have a responsibility to uphold a duty of care to all employees.”
S4C was launched in 1982 after a campaign to establish a Welsh-language channel.
“Sian was so proud to have been asked to come out of retirement to lead an organisation that, as a young girl, she campaigned to set up,” Mr Doyle said.
“But that pride turned into frustration, and then to disappointment, fear, and finally despair.”
He said he had “watched in horror and disbelief” as his wife had been “hunted over the last seven months”.
“The person represented in yesterday’s supposedly ‘independent’ report was unrecognisable from the woman I’ve loved for the past 37 years, or the woman her friends and former colleagues know,” he added.
A spokesperson for S4C said the news about Ms Doyle was “very worrying”.
“We are thinking about her and the family,” they said in a statement. “We have offered our support to the family during this difficult time.
“Our hope is that she will recover quickly, and we wish her all the best for the future.”
The 1975 and Olivia Rodrigo will be among the stars headlining Glastonbury Festival this year, it has been announced.
Glastonbury organisers have revealed the line-up for this summer’s event, taking place between 25 June and 29 June, after months of speculation.
The 1975 will take to the iconic Pyramid Stage on the Friday to headline, then Canadian singer-songwriter Neil Young will perform on Saturday and Olivia Rodrigo on the Sunday.
Other big names performing include British pop sensation Charli XCX, rapper Loyle Carner electronic group The Prodigy.
Instagram
This content is provided by Instagram, which may be using cookies and other technologies.
To show you this content, we need your permission to use cookies.
You can use the buttons below to amend your preferences to enable Instagram cookies or to allow those cookies just once.
You can change your settings at any time via the Privacy Options.
Unfortunately we have been unable to verify if you have consented to Instagram cookies.
To view this content you can use the button below to allow Instagram cookies for this session only.
Young’s announcement in January came amid some confusion, as he had days before told fans he was pulling out of the festival because the BBC’s involvement was a “corporate turn-off”.
The Canadian singer-songwriter later said this decision was down to “an error in the information I received”.
More on Glastonbury
Related Topics:
The 1975 will be headlining for the first time, having made their Glastonbury debut in 2014.
The Cheshire band, known for hits such as Somebody Else and Chocolate, have regularly made headlines due to the antics of frontman Matty Healy.
Glastonbury, which takes place at Worthy Farm in Somerset in the summer, has worked closely with the BBC – its exclusive broadcast partner – since 1997.
Image: Neil Young performing at the New Orleans Jazz & Heritage Festival last May. Pic: Amy Harris/Invision/AP
Appetite for the esteemed festival saw standard tickets sell out in 35 minutes in November.
They cost £373.50 plus a £5 booking fee, up £18.50 from the price from the 2024 festival, and were sold exclusively through the See Tickets website.
The date for the resale – where tickets not fully paid for are put back up for purchase – is set for some time in spring.
The headliners last summer on the iconic Pyramid Stage were Dua Lipa, SZA and Coldplay, who made history as the first act to headline the festival five times.
2026 is likely to be a year off for Glastonbury, with the festival traditionally taking place four out of every five years, and the fifth year reserved for rehabilitation of the land.
Ofcom received 825 complaints over the Brit Awards, with the majority relating to Sabrina Carpenter’s raunchy performance and Charli XCX’s outfit, the media watchdog says.
US pop star Carpenter, 25, sported a red sparkly military-style blazer dress for her performance at the awards show on Saturday night, paired with stockings and suspenders for a rendition of Espresso.
The song was mixed with a Rule Britannia mash-up, as dancers in military parade dress followed her.
She then switched to a red sparkly bra and shorts for her next song, Bad Chem, which she performed alongside dancers in bras and shorts while sitting suggestively on a large bed.
Image: Sabrina Carpenter performing her second song. Pic: Reuters
Carpenter later received the global success award at the ceremony, and was also nominated in the international artist and international song of the year categories.
But much of the buzz on social media surrounded her performance, which took place before the 9pm watershed.
Please use Chrome browser for a more accessible video player
The singer addressed the concerns during her acceptance speech for artist of the year, saying: “I heard that ITV were complaining about my nipples. I feel like we’re in the era of ‘free the nipple’ though, right?”
Carpenter paid tribute to the UK in her acceptance speech, saying: “The Brits have given me this award, and this feels like such an insane honour in a very primarily tea-drinking country… you really understood my dry sense of humour because your sense of humour is so, so dry. So I love y’all more than you even understand.”
Actor Noel Clarke begins his High Court libel case against The Guardian’s publisher today.
Clarke, 49, is suing Guardian News and Media (GNM) over a series of articles it published about him in April 2021.
They were based on the claims of 20 women Clarke knew “in a professional capacity” who allege his behaviour towards them amounted to sexual misconduct.
Clarke, known for his roles in the Kidulthood trilogy and Dr Who, “vehemently” denies “any sexual misconduct or wrongdoing”.
What will the trial cover?
Clarke is suing GNM for libel, sometimes also referred to as defamation.
It’s a civil tort – not a criminal offence – defined as false written statements that have damaged the person’s reputation. This means Clarke can seek redress or damages but no one will face charges or prison.
Clarke claims the articles The Guardian published in 2021 altered public opinion of him, damaged his reputation, and lost him work.
He said after the allegations emerged: “In a 20-year career, I have put inclusivity and diversity at the forefront of my work and never had a complaint made against me.
“If anyone who has worked with me has ever felt uncomfortable or disrespected, I sincerely apologise. I vehemently deny any sexual misconduct or wrongdoing and intend to defend myself against these false allegations.”
The Guardian is defending the claim on the basis of truth and public interest.
It said in its statement: “Our reporting on Noel Clarke in 2021 was based on the accounts of 20 brave women. After we published our first article, more women came forward.
“At trial, 32 witnesses are set to testify against Mr Clarke under oath. We look forward to a judge hearing the evidence.”
The trial will only focus on liability – not the amount of damages to be paid if Clarke is successful.
The actor tried and failed to get the case struck out in January, with his legal team saying it had “overwhelming evidence” of “perversion of the course of justice”.
His lawyers told the High Court three of the journalists involved in the articles had “deliberately and permanently” deleted messages, which meant he could not get a fair trial.
Lawyers for GNM told the court there was “no adequate evidential basis” for Clarke’s application for a strike out and said it sought “to smear Guardian journalists and editors without any proper justification”.
The trial, which will be presided over by judge Mrs Justice Steyn, is expected to last between four and six weeks.
Image: In July 2015. Pic: PA
What has happened since the articles were published?
A month before the articles about him were published in April 2021, Clarke received BAFTA’s outstanding contribution to British cinema award.
However, once the allegations against him emerged, he was suspended by the organisation and the prize rescinded.
His management and production company 42M&P told Sky News they were no longer representing him and Sky cancelled its TV show Bulletproof, starring Clarke and Top Boy actor Ashley Walters as the lead roles.
ITV also decided to pull the finale of another of his dramas, Viewpoint, following the Guardian articles.
The Met Police looked into the allegations against Clarke for any potential criminal wrongdoing, but in March 2022 announced they “did not meet the threshold for criminal investigation”.
Clarke filed the libel claim the following month and has attended several of the preliminary hearings in person.
He says he has faced a “trial by media” – and that the ordeal has left him suicidal and in need of professional help.
Image: At the UK premiere of Kidulthood in London’s Leicester Square in 2006. Pic: PA
‘Rising star’
Clarke made his TV debut in a revived version of Auf Wiedersehen Pet in 2002.
Soon after he played Mickey Smith in Dr Who and Kwame in the six-part Channel 4 series Metrosexuality.
He wrote and starred in the film trilogy Kidulthood, Adulthood, and Brotherhood, which were based in west London, where he grew up, and explored the lives of a group of teenagers given time off school after a bullied classmate takes their own life.
It was a box office success and eventually saw Clarke given BAFTA’s rising star prize in 2009.
Anyone feeling emotionally distressed or suicidal can call Samaritans for help on 116 123 or email jo@samaritans.org in the UK. In the US, call the Samaritans branch in your area or 1 (800) 273-TALK.