Testing Diet Changes Before Breast Cancer Surgery

This trial is asking whether women with early luminal breast cancer can stick to a special diet—either a ketogenic diet (very low carbohydrate) or a protein-restricted diet—for about nine days before their scheduled surgery. The researchers want to understand if these diets are feasible for patients to follow, and whether the changes might have any effect on cancer growth. Right now, there isn't enough scientific evidence to recommend any particular diet for cancer patients, so this study is an important first step.

Many cancer patients want to change their diet after diagnosis, hoping to starve cancer cells or slow growth, but doctors don't have solid scientific evidence yet to guide these choices. This trial exists to find out if these specific diets are realistic for patients to follow and to look for biological clues about whether they might help.