As a senior breast oncologist and researcher, Dr. Ligibel focuses on the impact of exercise and body weight on cancer recurrence and survivorship -- all while reshaping how doctors care for the whole person.

Driven by a passion to help survivors thrive, she has spent more than two decades demonstrating how simple changes can improve a patient’s well-being. This life-changing work culminated in a large-scale landmark study called the BWEL trial, which she presented at the 2026 ASCO Annual Meeting.

Seeing Beyond the Tumor

Breast cancer touches countless lives, affecting about one in eight women in the United States. While modern advancements in detection and treatment have improved survival rates, the journey can still take an immense physical and emotional toll. Dr. Ligibel was quick to recognize that helping a patient move past cancer required looking outside the tumor itself.

Early in her practice, she noticed a critical trend: carrying extra weight was consistently linked to a more challenging recovery, a higher chance of the cancer returning, and a lower overall quality of life. Yet, patients rarely received concrete guidance on how to manage it.

Dr. Ligibel set out to change that. Her career became dedicated to proving that lifestyle support can measurably restore both physical vitality and mental peace of mind for people navigating life after a diagnosis.

A Support System Scaled to Thousands

To truly change how cancer is treated, Dr. Ligibel knew she needed to prove her ideas could work for everyone, not just a small group of patients at a single hospital. BWEL is the largest phase III randomized controlled trial ever designed to study weight loss in early-stage breast cancer, enrolling thousands of participants across more than 600 oncology practices in the United States and Canada.

Working with a team of experts in exercise, nutrition, weight management, and behavior change, she designed a program that was beautifully simple and human: patients were paired with a health coach for structured, telephone-based support focused on healthy eating, staying active, and ongoing encouragement.

The results presented at the 2026 ASCO Annual Meeting tell a deeply moving story. Patients who received this lifestyle coaching experienced significant improvements in their physical and mental health. They reported having more energy, less fatigue, and a renewed ability to handle everyday activities—from returning to work to enjoying time with friends and family.

“These are vital milestones for breast cancer survivors,” Dr. Ligibel explains, “since cancer treatment can make people less able to work, move, and care for themselves.”

What was once viewed as purely optional support has now been proven under her leadership to be an essential piece of successful cancer care.

A Career Shaped by Early Support

Dr. Ligibel’s career is a profound example of how early seed funding for an innovative idea can spark a lasting legacy for patients worldwide.

In 2004, early in her career, Dr. Ligibel set out to study how exercise alters a survivor's internal health. Conquer Cancer®, the ASCO Foundation, recognized the potential of her idea and funded her work through a Conquer Cancer Career Development Award (CDA).

That early grant provided the critical runway, protected time, and resource security she needed to stay in academic research. It allowed her to establish an independent research program that, more than 20 years later, made the BWEL study possible.

Years after her CDA, Dr. Ligibel was also honored with the 2021 Hologic, Inc Endowed Women Who Conquer Cancer Mentorship Award, celebrating her outstanding leadership and her dedication to guiding the next generation of researchers entering the oncology field.

Changing the Conversation

For generations, women with breast cancer were simply told to lose weight or stay active but were left without a clear map or standard support. Dr. Ligibel’s research elevates lifestyle interventions into structured, evidence-based, accessible care.

Your support provides the critical funding needed to identify and support high-potential scientific ideas -- turning early research concepts into lifestyle-changing realities for patients. 

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Sources

1. ACS: https://www.cancer.org/cancer/types/breast-cancer/about/how-common-is-breast-cancer.html
2. Ligibel, J.A., et al. (2026) “Effect of a weight loss intervention (WLI) on quality of life (QOL) and symptoms in women with breast cancer: Results from the Breast Cancer Weight Loss (BWEL) trial.” ASCO Annual Meeting / Journal of Clinical Oncology.