Can a keto diet boost breast cancer treatment?

This study tested whether a 2-week very low-carb (ketogenic) diet combined with the hormone therapy letrozole is feasible and tolerable for postmenopausal women with early-stage estrogen receptor-positive (ER+) breast cancer. 31 participants followed the diet before surgery. The goal was to see if the diet could help the drug work better by affecting insulin and cancer growth signals. The study focused on whether people could stick to the diet and if it changed markers like Ki67 in tumors.