Why did Mary travers gain so much weight latter in life?

Mary Travers, known for her work as a member of the Folk Music trio Peter, Paul and Mary, struggled with various health issues later in life, including a diagnosis of leukemia. These health challenges, combined with factors like lifestyle changes and medication side effects, may have contributed to weight gain. Additionally, emotional factors and the stress associated with her illness could also have played a role in her weight fluctuations.