Jenna Fischer, best known for her role as Pam Beesly on The Office, has opened up about how regular exercise and a protein-focused diet have become central to her recovery and wellbeing following breast cancer treatment.
Speaking on a recent episode of the Office Ladies podcast with co-host Angela Kinsey, Fischer said committing to weight training for more than a year has transformed both her physical and mental health.
“I would love to give an update on my weightlifting. I have been weightlifting for over a year now, and I am so passionate about it,” Fischer said. “I feel physically stronger than I ever have.”
The actress explained that her approach to fitness has shifted significantly since her cancer diagnosis. In the past, her workouts were focused on weight loss and calorie burning. Now, strength training is about building resilience and feeling capable in her own body.
“The weight lifting is about something else,” Fischer said. “It’s about being physically strong and capable in my body. For me, it’s also about having fewer side effects from my medications, because it’s been proven that exercise really helps.”
Fischer trains at home using the BodyFit by Amy program, with a primary focus on gaining strength rather than changing the number on the scale. While her weight has remained stable, she noted that she has lost an inch and a half from her waist. After workouts, she fuels her body with protein shakes containing around 30 grams of protein.
She also credited trainer Amy Kiser Schemper for helping her overcome negative thought patterns. “She’s part therapist,” Fischer said, praising the supportive tone of Schemper’s online content.
Exercise and Cancer Recovery
Fischer’s experience aligns with a growing body of research highlighting the benefits of physical activity for cancer survivors. A 2025 study published in JAMA, which analyzed 27 clinical trials involving nearly 2,000 older adults with cancer, found that regular exercise significantly reduced depression and anxiety while improving overall quality of life. Mind-body practices such as yoga and tai chi were shown to have an even greater impact on mood.
Another 2025 study in Cancer Medicine focusing on breast cancer survivors reported similar findings, noting that aerobic exercise and hybrid programs combining cardio, strength, and balance training were particularly effective in easing anxiety and depression.
Earlier research, including a 2019 study in the Journal of the American Geriatrics Society, also showed that patients undergoing chemotherapy experienced meaningful improvements in mood and anxiety after participating in a structured exercise program.
Fischer’s Breast Cancer Diagnosis
Fischer was diagnosed with stage 1 triple-positive breast cancer in December 2023 after a routine mammogram returned inconclusive results. A biopsy confirmed the diagnosis on December 1.
Triple-positive breast cancer means the cancer cells test positive for estrogen, progesterone, and HER2 receptors. While considered aggressive, this subtype is often highly responsive to treatment.
In January 2024, Fischer underwent a lumpectomy to remove the tumor, followed by 12 weekly chemotherapy sessions beginning in February. She later completed a three-week course of radiation therapy in June 2024.
“Luckily, my cancer was caught early, and it hadn’t spread,” Fischer said. “But because of the aggressive nature of triple-positive breast cancer, chemotherapy and radiation were still necessary to make sure it didn’t return.”
She also spoke candidly about losing her hair during chemotherapy, noting that wigs and hats helped her maintain privacy while undergoing treatment. Hair loss, a common side effect of chemotherapy, is usually temporary, with regrowth typically beginning weeks after treatment ends.
After completing surgery, chemotherapy, and radiation, Fischer later announced that she was cancer-free.
Encouraging Screenings and Healthy Habits
Fischer has since urged other women not to delay routine screenings, crediting her mammogram with catching the cancer early while it was still highly treatable. She has partnered with the Working With Cancer initiative to promote workplace support for medical screenings and treatment.
Medical experts consistently stress that survivorship includes not only monitoring for recurrence, but also adopting healthy behaviors such as regular exercise, balanced nutrition, maintaining a healthy weight, and limiting alcohol consumption.
For Fischer, staying active has become a symbol of resilience and recovery. “I can’t say enough great things about it,” she said of weight training. “I love it.”
Her journey underscores a powerful message echoed by researchers and clinicians alike: exercise is not just about fitness, but an essential tool for healing—physically, mentally, and emotionally—after cancer.
