Eating patterns and activity levels to protect breast cancer survivors' hearts

Breast cancer survivors face an increased risk of heart disease, not just from cancer treatments themselves, but also from metabolic changes like weight gain and insulin resistance that happen during and after treatment. This study is testing whether two lifestyle approaches—time-restricted eating (eating within a shorter window each day) combined with strategies to reduce sitting time, versus standard nutrition and exercise guidelines—can help protect your heart and metabolism during chemotherapy. Researchers will use special imaging and health monitoring to see which approach works best.

While cancer treatments have improved survival, many breast cancer survivors now die from heart disease rather than cancer itself. Recent research shows that the way fat accumulates in the body during cancer treatment—even in people with normal weight—is a major hidden risk factor for heart problems. This trial aims to find practical lifestyle changes that can prevent these metabolic and heart complications from happening in the first place.