Meghan Trainor's weight loss journey began after she was diagnosed with gestational diabetes during her pregnancy. This diagnosis motivated her to focus intensely on her health, involving strength training three times a week, working with a dietician, and making significant lifestyle changes. Additionally, after the birth of her second child, she used the medication Mounjaro (tirzepatide), combined with a healthy diet and exercise, to aid in her weight loss. Her main drive for this transformation is to maintain her health for her children and sustain her touring career. Despite the positive changes, she faced criticism and backlash for her weight loss, which was difficult for her. Throughout, she has emphasized the importance of feeling good and understanding her hormones and gut health as part of her wellness approach.