Fasting may soothe aromatase inhibitor side effects

NCT ID NCT06172088

Completed Symptom relief Sponsor: University Hospital Tuebingen Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a 7-day supervised fast (max 350 calories per day) could reduce muscle and joint pain in 54 breast cancer patients taking aromatase inhibitors. The goal was to see if fasting is feasible and improves physical well-being and quality of life. Researchers also tested a new app to track symptoms.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: therapeutic fasting (7-day prolonged fast, max 350 kcal/day)
What this could lead to: If it works, this could offer a drug-free way to reduce muscle and joint pain for breast cancer patients on hormone therapy.
What could go wrong: This is a small, early exploratory study with only 54 participants, so results may not apply widely. Fasting can be hard to stick with and may not be safe for everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for BREAST CANCER are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

breast cancer Fasting

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BREAST CANCER PATIENTS TREATED WITH AROMATASE INHIBITORS

Contacts and locations

Locations

Robert-Bosch-Krankenhaus

Stuttgart, Baden Würtenberg, 70341, Germany
Würzburg University

Würzburg, Bavaria, 97080, Germany

More trials for these conditions

Other studies related to the condition(s) this trial covers.