Testosterone replacement therapy comes with serious and potentially irreversible health risks including infertility and early heart disease

• Read more in the Antiviral series

Are you tired? Feeling flat and irritable? Finding it difficult to concentrate? Maybe you’re experiencing the seemingly ubiquitous symptoms of modern life. Or, if you’re a man, you may have been told by countless uncredentialed online influencers that you’re probably suffering from “low T”.

For decades, testosterone has been marketed to men as a means to maximise virility. But in recent years, social media has fuelled the “T-maxxing” trend, in which men are encouraged to maximise their testosterone levels through either natural or artificial means.

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© Composite: Getty Images

© Composite: Getty Images

© Composite: Getty Images

The infamous Japanese noise artist has a vast and forbidding catalogue that commands a cult fandom. Sam Andrews, 18, is vlogging his way through the lot – and taking a stand for deep listening

An Instagram Reel that looks like an 80s coming-of-age movie pops up on your feed. It’s four teenage boys in an American-style basement – comfy sofas, guitars, ping pong table – jeering and laughing. But they aren’t secretly drinking beer or planning on sneaking out. They’re brandishing a vinyl copy of Pulse Demon, the most popular album from the cult Japanese noise artist Merzbow, and subjecting themselves to its brutally harsh sound in full, for fun. “I think this is the Book of Revelation: The Soundtrack,” one guy blurts out, a vague look of fear in his eyes.

Merzbow, real name Masami Akita, is the world’s most renowned noise artist. Since 1979, Akita has released more than 400 recordings, which range from a 10-hour long album misleadingly titled Merzbient (it’s anything but ambient) to a free-noise supergroup called Flying Testicle. Since February, Sam Andrews, the video’s 18-year-old creator, has been attempting to listen to every one, and is documenting his progress online each day. “I think of my day in album-size chunks,” he says, laughing. “It’s like, get up at seven, get breakfast and then headphones in: noise.”

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© Photograph: Aviv Small/ZUMA Press Wire/Shutterstock

© Photograph: Aviv Small/ZUMA Press Wire/Shutterstock

© Photograph: Aviv Small/ZUMA Press Wire/Shutterstock

Youth club closures, unaffordable housing and social media cited as factors contributing to a sharp decline in wellbeing

The number of young people with no close friends has risen fivefold since 2014 as a result of growing up in a “bleak world” dominated by austerity, the pandemic and social media.

New research paints a sobering picture of how 11- to 24-year-olds in England are increasingly lonely, isolated and “disconnected” from themselves, peers and wider society.

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© Photograph: Ievgen Chabanov/Alamy

© Photograph: Ievgen Chabanov/Alamy

© Photograph: Ievgen Chabanov/Alamy

Discussing people’s bodies can be fraught. We asked eating disorder experts how to do so – or not – responsibly

In the age of Ozempic and people being open about plastic surgery, discussion about people’s bodies is rife. At the same time, nobody seems quite sure how to talk about them, as shown by recent coverage of celebrities like Ariana Grande.

It is a fraught topic. We asked eating disorder experts for guidelines to follow when talking about other people’s bodies, and how to do so without doing harm.

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© Illustration: LUVLIMAGE/Getty Images

© Illustration: LUVLIMAGE/Getty Images

© Illustration: LUVLIMAGE/Getty Images

The vice president spoke to reporters before he flew to Michigan on Monday about the AI video that President Donald Trump posted on social media over the weekend that featured a stylized imaginary attack on Iran's Kharg Island, which is key to its oil exports and Trump has repeatedly threatened.

New child safety measures are welcome, but the wider risks posed by these platforms remain unaddressed

“Hook, hold, harvest and hide” was how Megan O’Neill, a lawyer for the US state of California, characterised Meta’s business model in the trial that ended last week with an $18bn settlement, to be shared between the states and territories that brought the case. It was a clever way to describe the company’s approach to users’ attention and data. But the sharpness of her words was not matched by the deal. While the strengthening of child safety features is welcome, the tech giant once again batted off efforts to alter its products.

Meta’s decision to settle enabled it to avoid any admission of liability. It put a stop to the awkward questions being asked of witnesses including Adam Mosseri, Instagram’s CEO, and the damaging claims made by whistleblowers such as Arturo Béjar. This former Meta safety engineer told the court that his own daughter had been sent unsolicited photos of male genitals on Instagram.

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

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© Photograph: Noah Berger/AP

© Photograph: Noah Berger/AP

© Photograph: Noah Berger/AP

As families await news after the catastrophe, community members appeal for compassion in the face of hateful rhetoric

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A slew of racist social media comments have been made towards Australians missing in the catastrophic Nepal-Tibet floods, prompting calls for greater accountability of major platforms to remove hateful rhetoric.

On Monday, the total number of Australians missing after flash floods triggered by a massive glacier collapse in the Himalayas rose to 43, and the overall death toll was at least 810 people.

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© Photograph: Arun Sankar/AFP/Getty Images

© Photograph: Arun Sankar/AFP/Getty Images

© Photograph: Arun Sankar/AFP/Getty Images

This month a predator with ties to the online extortion group known as 764 was sentenced to decades in prison. The mother of one of his victims wants parents to know the truth about this ‘harrowing’ global trend

• Sadistic online exploitation: five warning signs for parents - and how to keep young people safe

“My beautiful, kind, intelligent, trusting daughter had the misfortune of stumbling across a link in a Discord server that led her to your evil and cruel group.

“The grooming of her started immediately, and what followed was unimaginably harrowing and traumatic. You were just one of the group members who abused her, who made her do things that no young person should ever be made to do.”

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© Illustration: Avinash Weerasekera/The Guardian

© Illustration: Avinash Weerasekera/The Guardian

© Illustration: Avinash Weerasekera/The Guardian

Many people think Greg Chism is a freak — or worse. He says he was just following the incentives of the platform.

© Chris Buck for The New York Times

Social services minister says social media was playing a role in the increase of sexual violence among teenagers

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The Australian government is considering allowing users to opt in or opt out of social media algorithms, and is looking at a recent UK ban on depictions of strangulation and suffocation in pornography.

The social services minister, Tanya Plibersek, said social media was “playing a huge role” in the increase in sexual violence among teenagers and choking, and confirmed the options were being considered as the government develops its second action plan to end family and domestic violence against women and children.

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© Photograph: Bianca de Marchi/AAP

© Photograph: Bianca de Marchi/AAP

© Photograph: Bianca de Marchi/AAP

Social services minister says social media was playing a role in the increase of sexual violence among teenagers

• Follow our Australia news live blog for latest updates

• Get our breaking news email, free app or daily news podcast

The Australian government is considering allowing users to opt in or opt out of social media algorithms, and is looking at a recent UK ban on depictions of strangulation and suffocation in pornography.

The social services minister, Tanya Plibersek, said social media was “playing a huge role” in the increase in sexual violence among teenagers and choking, and confirmed the options were being considered as the government develops its second action plan to end family and domestic violence against women and children.

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© Photograph: Bianca de Marchi/AAP

© Photograph: Bianca de Marchi/AAP

© Photograph: Bianca de Marchi/AAP

Inside India’s viral political movement.

State attorneys general spent months in negotiations. Then, as its legal losses mounted, the social media giant’s new top lawyer brought a huge settlement to the table.

© Jason Henry for The New York Times

Their videos have proliferated on social media, but the payments are frequently hidden from viewers.

From cover design to shelf placement and influencer partnerships … how publishers will persuade you to buy their books this autumn

Think about the last book you bought. How did you choose it? Was it from a recommendation, a review, a TikTok video? Did the cover grab you, were you swayed by the quotes on the front, or did you just happen to spot it on an appealing table as you walked into the shop? Did you think about all the nudges that led you to that decision – by the publisher, the bookseller or that person you follow on Insta?

The reality is that our reading choices are directed and massaged at every turn. “It’s all about the art of persuasion,” says Philip Gwyn Jones, who was a publisher for more than 30 years and is now a literary agent. And who are the persuaders? They’re the booksellers, the supermarket stock buyers, the publishing houses and their ranks of marketers and publicists. And, more recently, persuasion often comes from BookTokers and online influencers, social media videos, podcasts and Instagram posts. How is all this changing publishing?

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© Illustration: Giacomo Gambineri/The Guardian

© Illustration: Giacomo Gambineri/The Guardian

© Illustration: Giacomo Gambineri/The Guardian

As a war correspondent, I worked with photographers who said the camera was a buffer between them and reality. It is much the same now as we snap and scroll

I was sitting on a rooftop in Athens at sunset looking up at Filopappou hill. Athens in August is burning hot. Not so much hotter than London or Paris any more, but the sort of hot that makes it foolish to step out into sunlight before 6pm. Emerging from the air conditioning at dusk, I saw a dense line of silhouettes on the ridge above me. Almost every one of these shadows had its arm raised, holding a cameraphone towards the sunset.

Of all the pretty hills in the Greek capital, Filopappou arguably has the best view. The Acropolis stands directly to its north. To its south, where I sat, the city sprawls out towards the sea and a dark horizon of islands – Aegina, Salamina, Agistri.

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© Photograph: Antonio Parrinello/The Guardian

© Photograph: Antonio Parrinello/The Guardian

© Photograph: Antonio Parrinello/The Guardian

Fraudsters are exploiting enterprise chat apps like Teams and Webex to trick Chinese victims into transferring large sums of money, fueling a wave of complaints.

Smoking used to be everywhere, the way Facebook, TikTok, Snap, YouTube and Instagram are now. Society decided to break the habit, but it took a long time.

© Jason Henry for The New York Times

Proposals for curbing social media use among children have wide support, but critics say they are ineffective.

© Jeremy Piper/Reuters

Those who said Meta harms children struck a blow, but the ability of big tech to gouge profits and cause harm is barely diminished. That’s the battle to come

Follow the money. If you want to know how the tech giant Meta really feels about the $18bn it agreed to fork out to end a landmark lawsuit against it – an outcome widely hailed as a victory for campaigners – just look at its share price. It didn’t go down when word came on Wednesday that Meta had settled with the 29 US states that had argued that the company’s Facebook and Instagram platforms harmed children. On the contrary, Meta stock went up, initially surging by 5%, before levelling out at a gain of just over 1.25%. There could be no clearer proof that the money men reckon Meta dodged a bullet.

To be sure, there was plenty to hearten those who have long believed that social media damages teenagers especially, whether by exposing them to content they shouldn’t see or by sapping their self-esteem, offering them filters that show how much prettier they would look if they had cosmetic surgery or giving them a metric of their popularity – and unpopularity – in the form of a running tally of “likes” and views.

Jonathan Freedland is a Guardian columnist

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

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© Photograph: Wally Skalij/Getty Images

© Photograph: Wally Skalij/Getty Images

© Photograph: Wally Skalij/Getty Images