A popular K-pop star gave fans a fright when she collapsed on stage mid-performance after recently revealing she had lost 10kg in one month.

Hyuna, 33, had been performing her song Bubble Pop at the Waterbomb 2025 music festival in Macau on Sunday when all of a sudden she dropped to the stage floor while dancing.

Footage of the terrifying moment circulating online shows dancers rushing to support her as she lost consciousness before a security guard picks her up and carries her offstage.

Fans took to social media to express concern about her health following the incident, after she revealed she had lost 10kg in just one month following rumours of weight gain and possible pregnancy, reported Korea Times.

The popstar shared a post on Instagram to her 16.1 million followers on Tuesday where she showed her scales reading 49kg and admitted the challenge of 'changing the first digit' of her weight.

Hyuna was previously diagnosed with vasovagal syncope in 2020 - a condition that causes a sudden drop in blood pressure and heart rate, which can be triggered by stress, fatigue or extreme dieting. 

Medical experts suggest that such rapid weight loss can lead to nutritional imbalances, which may have contributed to her fainting spell.

After regaining consciousness and taking a few hours to recover from her public collapse, she took to Instagram to apologise to her fans. She also promised to 'develop more stamina and work hard consistently'.

'I'm truly, truly sorry… Although it was only a short time since my last performance, I wanted to show you a great performance, but I don't feel like I managed to be professional, and to be honest, I don't remember anything.

'After constantly thinking about it for a while, I wanted to tell you this no matter what. Many Macao fans came, including our A-ings (Hyuna's fans), and everyone paid money to watch this performance, so I feel apologetic and truly sorry.

'It would be amazing if everything went the way I wanted it to, but I'll try hard…!! I want to thank you for always adoring, loving, and cherishing me ever since I was young, despite my shortcomings. 

'I'm really okay! Don't worry about me! I hope everyone has a good night… sleep well!!'

Her agency, At Area, confirmed she was resting after the incident. 

It comes after Way, a singer from K-pop girl group Crayon Pop, called out Hyuna's rapid weight loss and expressed concern for her health.

She mentioned Hyuna in a video titled Why K-Pop Diets Fail + How To Succeed, posted on her YouTube channel on Wednesday.

'Hasn’t Hyuna gained a bit of weight lately? I saw her Instagram post where she said, "You used to be skin and bones," blaming herself, and I felt really sorry for her. It’s good if she’s decided to go on a healthy diet, but she also wrote, "I ate a lot of c***", of course, eating is fine. But why use such words?,' she wrote.

Hyuna's rise to fame was not an easy journey - a notoriously similar story to many young girls and women in the K-pop industry.

She was only 15 years old when she debuted in Wonder Girls as the group's main dancer. However, health issues led to her exit from the girl group. 

The K-pop veteran confessed to eating just one piece of sushi a day so that she could maintain a weight of 40kg.

'Back then, I'd survive on a single piece of kimbap while pushing through all the scheduled activities. And that destroyed me. By 26, I was so unhealthy,' she revealed on the program B-Season.

The singer went into more details about her issues on the Korean talk show Point of Omniscient Interfere, where she admitted that the lack of food led to her developing the fainting condition peripheral neuritis.

'I used to eat very little. There were times when I would go a week without eating, and I even developed peripheral neuritis,' she said, according to Allkpop.

'Whenever my weight dropped too low, it would trigger it. I would faint after surviving on just one piece of kimbap. I fainted 12 times in a month.'

But Hyuna made her return to the music scene as a singer in the girl group 4Minute, following which she debuted as a solo artist. 

K-pop brings in billions of dollars for South Korea's economy each year, so it's no surprise that nothing less than complete perfection is expected from the young hopefuls entering the music industry.

While a lot has already been said about K-pop's record labels - where young children and teenagers are sculpted into chart-topping superstars - a shocking statistic was revealed last month.

According to the investigative book titled K-pop: Idols in Wonderland, as many as eight out of ten female K-pop trainees stop menstruating due to having highly restrictive diets, reported the Korea Times.

Other factors, such as stress and lack of sleep, are also likely to be to blame.