Fans of Meghan Trainor have been in awe of her weight loss transformation in 2025 and have been wondering how she achieved her slimmer figure. Thankfully, the “All About That Bass” hitmaker is an open book when it comes to her health and fitness journey. Life & Style breaks down everything the singer has said about how she lost weight, including Mounjaro use, her exercise plan and her diet.
Meghan Trainor Admitted to Using Mounjaro
After months of speculation from fans that Meghan used a weight loss drug to shed pounds, the “Made You Look” singer admitted to using Mounjaro — a type 2 diabetes drug often prescribed off label for weight loss due to its ability to reduce appetite and slow down digestion.
“No, I don’t look like I did 10 years ago. I’ve been on a journey to be the healthiest, strongest version of myself for my kids and for me. I’ve worked with a dietician, made huge lifestyle changes, started exercising with a trainer, and yes, I used science and support (shoutout to Mounjaro!) to help me after my 2nd pregnancy. And I’m so glad I did because I feel great,” Meghan wrote in a March 31, 2025, Instagram post after seeing and hearing comments about her body at the 2025 Billboard Women in Music event.
Meghan later discussed her use of the drug, which is a brand name for the medication tirzepatide, on the April 10, 2025, episode of her and husband Daryl Sabara’s “Workin’ On It” podcast.
“We did 75 Hard after [our son] Riley was born and, man, did we crush,” Daryl said. Meghan added, “Then, we heard more and more of our friends — and even our doctors — were on Mounjaro and Ozempic.”
Meghan and Daryl both decided to try Mounjaro because research found that it had fewer side effects than other weight loss drugs, such as Wegovy and Ozempic. The Grammy winner said she had “no shame” in using the medication. However, she and Daryl also made sure that they kept up with their gym routines and diet plans so they didn’t “lose muscle that we worked so hard gaining all those years.’”
Meghan Trainor Shares Her Exercise Routines
Meghan and Daryl have worked out together for years, and their various gym routines have been shared on Instagram by personal trainers Rebecca Stanton and Bella Maher. And though fitness has long been important to Meghan, she told People that she decided to take it more seriously in 2024 while preparing to go on tour.
How Did Meghan Trainor Lose Weight? Her Exercise Plan, Mounjaro
“I already told my household. I was like, ‘I am training for the Olympics, OK?’ I want to train and eat clean, and feel good when I’m dancing and singing. I don’t wanna be so winded, because right now, I’m winded,” she explained.
Her new routine helped her get stronger, as she explained to Women’s Health.
“I just look at all the years that I wasted doing hard cardio or trying to be a runner. My body was always just angry and inflamed. I was like, ‘What’s wrong with me? Why can’t I do this?'” Meghan said. “I know now that my body enjoys lifting weights and it doesn’t make you big and bulky.”
Meghan Trainor Prioritizes Protein in Her Diet
Meghan revealed to Women’s Health that she has a goal of eating 100 grams of protein a day. To achieve this, she often eats two eggs and organic turkey bacon for breakfast, plus recipes from meal delivery services for lunches and dinners.
“I want to mix it up, but I’m such a creature of habit that we’ll do the same thing every day,” she said. “I wish I knew how to cook. I make bland stuff. But my husband is a nerd about finding food delivery companies that give you protein and help you out with a journey like that. So we’re always looking for a new one.”
How Much Weight Did Meghan Trainor Lose?
While Meghan hasn’t shared exactly how much weight she’s lost, she revealed that she shed 60 pounds after she gave birth to her and Daryl’s son Riley in 2021. They later welcomed son Barry in July 2023.
