Meghan Trainor Reveals Weight-Loss Struggle That Began With a Scary Diagnosis

Meghan Trainor has opened up about the frightening medical diagnosis that pushed her into a full-scale lifestyle overhaul and set her on the weight-loss transformation that fans have been talking about all year.

The Grammy-winning singer told EatingWell that her journey began while she was pregnant, after learning she had gestational diabetes. The condition can be dangerous for both mother and baby and forced the hitmaker to rethink her health habits immediately.

Trainor admitted that the diagnosis shocked her and said it became the moment she knew she needed to take control of her wellbeing. What followed was a long and emotional process that transformed not only her body, but also her mindset and relationship with public scrutiny.

A Diagnosis That Forced Life-Altering Changes

Trainor explained that discovering she had gestational diabetes was a turning point. Doctors instructed her to change her diet, monitor her blood sugar levels and follow a strict plan to protect herself and her unborn child.

She said she felt immense pressure to adjust quickly, describing the early weeks as overwhelming but necessary. EatingWell reported that these medical directives formed the foundation of her long-term weight-loss journey and helped shape her commitment to prioritising her health.

The singer later revealed that addressing the condition meant learning everything she could about nutrition, glucose management and the impact of lifestyle choices on pregnancy. She took it seriously, telling interviewers that she wanted to ensure she was strong for her baby and for the family she was building.

How Meghan Trainor Lost the Weight

In the months after the diagnosis, Trainor embraced a full fitness and wellness routine. She focused on strength training, consistent workouts and professional medical guidance.

She also made significant changes to her diet, adopting more balanced eating habits that supported both her recovery and her long-term metabolism.

EatingWell noted that Trainor has spoken openly about using the medication Mounjaro as part of her treatment plan. She said hormonal imbalances had made her feel exhausted and sluggish, and that addressing these issues was critical to her success.

The singer has insisted that the transformation did not happen quickly. She said it took consistency, discipline and a willingness to rebuild her body from the inside out.

The Emotional Toll of Online Criticism

While working to regain her health, Trainor found herself the target of harsh social media criticism. She told EatingWell that some comments made her cry and that it hurt to see her body and motivation picked apart online.

The scrutiny also revived conversations about her earlier association with body positivity, especially after the worldwide success of her anthem "All About That Bass". Some users questioned her commitment to the movement, while others defended her, arguing that prioritising health should never be criticised.

Entertainment outlets highlighted the polarised responses, with many praising Trainor for her transparency in discussing a medical condition that affects thousands of pregnant women each year. Others expressed concern that she was being unfairly judged in a vulnerable moment.

Focusing on Health, Motherhood and Career

In an interview with KIISFM, Trainor said her greatest motivation came from wanting to stay healthy for her children and to keep up with the demands of her career. She shares two sons with her husband, actor Daryl Sabara, and said improved strength and energy levels have made it easier to handle motherhood and touring schedules.

Despite the intense public interest, Trainor has continued releasing music, performing at events and speaking publicly about her health journey. Her openness has sparked wider conversations about celebrity wellness culture, pregnancy-related illnesses and the pressure placed on women in the entertainment industry.

A New Chapter Defined by Strength

As she prepares for new music and future performances, Trainor said she finally feels strong again. The diagnosis that once terrified her has become a reminder of what she survived and how far she has come.

Her message to fans remains simple. Health comes first. Criticism comes second. And motherhood, she said, is the reason she is determined to take care of herself for the long term.