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Time-Restricted Eating Shows Promise for Breast Cancer Survivors Over 60

Eight-week study of weekday-only intermittent fasting in older breast cancer survivors with overweight demonstrates feasibility.

Saturday, March 28, 2026 0 views
Published in ClinicalTrials.gov
Clinical trial visualization: Time-Restricted Eating Shows Promise for Breast Cancer Survivors Over 60

Summary

Researchers at the University of Alberta tested whether time-restricted eating could benefit breast cancer survivors aged 60 and older who were overweight. Twenty-two women who had completed chemotherapy 1-6 years earlier participated in an 8-week program eating only between 12-8 pm on weekdays. The intervention included dietitian support, automated text message reminders, and regular check-in calls. This pilot study aimed to determine if this modified intermittent fasting approach was feasible and safe for this vulnerable population, who face increased risks of weight gain, metabolic dysfunction, and cancer recurrence after treatment.

Detailed Summary

The Time-restricted Eating in Survivors Trial investigated whether intermittent fasting could benefit older breast cancer survivors struggling with post-treatment weight management. This population faces unique challenges including treatment-related weight gain, metabolic changes, and elevated risks of recurrence.

The study enrolled 22 breast cancer survivors aged 60 and older with overweight or obesity who had completed chemotherapy 1-6 years prior. Participants followed a modified time-restricted eating schedule, consuming all food between 12-8 pm on weekdays only, with normal eating patterns on weekends.

The 8-week intervention provided comprehensive support including initial dietitian consultations, twice-daily automated text messages tracking eating windows, and three follow-up phone calls. This approach balanced structure with flexibility, recognizing the social and practical challenges older adults face with strict dietary restrictions.

As a completed pilot study with 22 participants, this trial likely focused on feasibility, safety, and preliminary efficacy measures rather than definitive outcomes. The weekday-only approach represents an innovative modification to traditional time-restricted eating protocols, potentially improving adherence while maintaining benefits.

For longevity and health optimization, this research addresses critical gaps in post-cancer care. Breast cancer survivors face accelerated aging, increased cardiovascular risk, and metabolic dysfunction. Time-restricted eating has shown promise for improving insulin sensitivity, reducing inflammation, and supporting healthy aging in general populations, making it particularly relevant for cancer survivors seeking evidence-based approaches to optimize their long-term health outcomes.

Key Findings

  • Weekday-only time-restricted eating (12-8pm) was tested in breast cancer survivors 60+
  • Study provided dietitian support plus automated text reminders for adherence
  • Modified intermittent fasting approach designed for older adults with health conditions
  • Trial completed successfully with 22 participants over 8 weeks

Methodology

Single-arm pilot study with 22 breast cancer survivors aged 60+ with overweight/obesity. Eight-week intervention duration with comprehensive support system. No control group mentioned, suggesting observational design focused on feasibility.

Study Limitations

Small pilot study with only 22 participants limits generalizability. Single-arm design without control group prevents definitive efficacy conclusions. Results and outcome measures not yet published despite completion.

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