Lee Younghyun, a powerhouse vocalist and a cornerstone of the legendary South Korean vocal group Big Mama, has sparked a significant conversation regarding the physical and professional costs of weight loss in the music industry. During a recent appearance on a popular YouTube variety program, the singer revealed that her dramatic 33-kilogram weight loss, while lauded by the public for its aesthetic results, had a profoundly negative impact on her primary craft: singing. This revelation highlights the often-overlooked tension between the stringent visual standards of the Korean entertainment industry and the physiological requirements of high-level vocal performance.
The discussion took place on March 19, during a video titled Lee Younghyun? Chatting with a Friend Met After 20 Years, which featured a reunion between Lee and the acclaimed actress and variety star Song Ji Hyo. The two shared a candid dialogue about their careers, the passage of time, and the personal sacrifices made to maintain a public image. Lee Younghyun’s admission that she has effectively "given up" on dieting to prioritize her vocal health marks a rare moment of defiance against the "skinny-at-all-costs" culture that dominates the K-pop and K-ballad scenes.
The Journey of a Vocal Titan: Contextualizing Lee Younghyun’s Career
To understand the weight of Lee Younghyun’s statements, one must first consider her standing in the South Korean music hierarchy. Lee debuted in 2003 as a member of Big Mama, a group that was revolutionary at the time of its inception. Unlike the typical idol groups of the early 2000s, which prioritized youth and visual appeal, Big Mama was marketed by M-Boat (a subsidiary of YG Entertainment) specifically for their extraordinary vocal talent. The group’s debut was built on the premise that talent should supersede appearance, a philosophy that allowed Lee to establish herself as one of the "Three Great Divas" of Korea, known for her incredible range, emotive power, and technical precision.
Over the decades, Lee’s voice became synonymous with the "soulful" movement in Korean pop, characterized by the "belting" technique and deep emotional resonance. However, even for a singer of her caliber, the pressure to conform to modern beauty standards eventually became unavoidable. In 2020, after a hiatus to focus on her family, Lee Younghyun returned to the spotlight having lost 33 kilograms—a weight equivalent to that of an average elementary school student. While she initially cited health reasons, specifically the prevention of gestational diabetes for future pregnancies, the public reaction focused almost entirely on her "transformation" into a slimmer version of herself.
The Physiological Conflict: Why Dieting Affects Vocal Power
In the YouTube video with Song Ji Hyo, Lee Younghyun was remarkably blunt about the professional fallout of her weight loss. "I was dieting before a performance, but I quit," she explained. "It was so frustrating. Singing is the only thing I do well, but because of the diet, my singing wasn’t good, so I got really angry."

This frustration is rooted in the science of vocal production. For powerhouse vocalists who rely on "belting" and sustained high notes, the body acts as a literal instrument. Vocal resonance and power are heavily dependent on diaphragmatic support and the engagement of core muscles. When a singer undergoes rapid or extreme weight loss, the body often lacks the necessary energy reserves and muscle tension required to push air through the vocal folds with the same intensity.
Professional vocal coaches have long noted that "losing the weight" often means "losing the support." The loss of fat and muscle mass can alter the singer’s internal sense of balance and breath control. For Lee Younghyun, whose career is defined by her ability to fill a stadium with her voice, the realization that her "new" body could not sustain her "old" voice was a professional crisis. Her statement, "Why am I even losing weight if I can’t do the one thing I’m good at?" serves as a poignant critique of an industry that demands visual perfection at the expense of the artist’s actual output.
Chronology of the Transformation and the Decision to Stop
The timeline of Lee’s weight journey provides insight into the immense pressure she faced.
- Late 2020: Lee Younghyun announces a 33kg weight loss through a professional diet program. She shares that she reached 95kg after her first pregnancy and was diagnosed with gestational diabetes, which motivated her to lose weight for her health.
- 2021–2023: She maintains a slimmer profile during Big Mama’s highly successful reunion and various solo appearances. However, fans began to notice a slight change in her vocal timbre, though her technical skill remained high.
- March 2024: In the conversation with Song Ji Hyo, Lee reveals she has officially stopped dieting for two days prior to the recording, citing a loss of vocal quality during rehearsals.
Lee’s decision to stop dieting was not just a personal choice but a professional necessity. She noted that even her management team had begun to exert subtle pressure on her appearance, stating, "Our manager was even giving me hints while picking out clothes for me." This detail underscores the systemic nature of the issue; even an established legend like Lee Younghyun is not immune to the "managerial gaze" that evaluates a female artist based on how well she fits into sample-sized stage outfits.
Supporting Data: The Precedent of the "Vocal vs. Visual" Trade-off
Lee Younghyun is not the first high-profile Korean singer to speak out about this dilemma. Several other prominent vocalists have shared similar experiences, creating a pattern of data that suggests extreme dieting is detrimental to the "Diva" vocal style.
- Ailee: The singer, often called the "Korean Beyoncé," famously broke down in tears on a broadcast while discussing her weight. She revealed that when she dropped to 49kg to satisfy public demand, her vocal cords couldn’t produce the power she was known for. She described the period as the most miserable of her career, eventually deciding to maintain a healthier weight to preserve her voice.
- IU: While primarily known as a pop idol, IU has spoken about the "IU Diet" (an extreme calorie-restriction plan) that went viral. She later warned fans against it, noting the physical toll it took on her energy levels during performances.
- Park Bom: The former 2NE1 member has faced intense public scrutiny for her fluctuating weight, which was largely due to health issues and medication. The discourse surrounding her has often ignored the impact of these physical changes on her unique vocal tone.
The data suggests a clear correlation: in the pursuit of the "ideal" body type—which in the South Korean entertainment industry often means a Body Mass Index (BMI) significantly below the healthy range—vocalists frequently experience a decline in stamina, pitch control, and volume.

Broader Implications for the Industry and Public Perception
Lee Younghyun’s candor has the potential to shift the narrative regarding beauty standards in the Korean music industry. For years, the industry has operated under the "visual first" paradigm, where vocalists are expected to be as thin as models. However, as the "vocal queen" generation (which includes artists like Lee, Gummy, and Lena Park) continues to dominate the charts through pure talent, a counter-narrative is emerging.
The public reaction to Lee’s revelation has been largely supportive, with many fans expressing relief that she is prioritizing her voice. This suggests a growing maturity in the audience, which values the "instrument" over the "packaging." However, the pressure from managers and stylists, as mentioned by Lee, indicates that the internal industry culture remains resistant to change. The struggle to find "stage-appropriate" clothing for women who do not fit the "size zero" mold remains a significant hurdle that Lee alluded to in her interview.
Conclusion: The Primacy of the Voice
Lee Younghyun’s statement—"Singing is the only thing I do well"—is a powerful reminder of an artist’s core identity. By choosing to abandon a restrictive diet, she is making a statement about the hierarchy of values in her career. She is prioritizing the longevity of her vocal cords and the quality of her performances over the ephemeral approval of the "visual" market.
As she moves forward, Lee’s journey will likely serve as a benchmark for other artists facing similar pressures. Her refusal to let dieting "ruin her career" is a defense of the craft of singing itself. In an era of digital editing and visual-heavy performances, Lee Younghyun’s commitment to the raw, physical power of the human voice stands as a testament to her status as a true artist. The industry may continue to push for smaller sizes, but as Lee has made clear, a smaller frame cannot hold a voice as large as hers.

