The goal of this observational study is to examine how frequently changes in taste occur in people with early-stage breast cancer who receive chemotherapy. It will also look at how these taste changes affect nutrition and quality of life. The main questions this study aims to answer are:
* How many participants develop changes in taste during chemotherapy? * How do these changes affect eating habits, nutrition, and daily life?
Participants are women with non-metastatic breast cancer who are receiving chemotherapy before or after surgery.
Researchers will use standardized taste tests to measure how well participants can perceive different flavors. These tests are designed to provide accurate and reproducible results.
Participants will:
* Take part in taste tests during their chemotherapy treatment * Have their nutritional status evaluated * Answer questions about their quality of life
Age ≥ 18 years
Diagnosis of non-metastatic breast cancer
Indication for neoadjuvant or adjuvant chemotherapy as part of standard clinical practice
Chemotherapy-naïve patients (no chemotherapy received in the previous 12 months)
Terminal or metastatic disease
Pre-existing taste or smell disorders (e.g., anosmia, dysgeusia, neurological syndromes, etc.)
Known allergies to any substances used in taste and chemesthetic function tests (e.g., quinine dihydrochloride, monosodium L-glutamate, capsaicin, etc.)
Receiving neoadjuvant or adjuvant chemotherapy within research protocols