Keto diet plus breast cancer drug shows promise in small study

This early-phase study tested whether a very low-carbohydrate ketogenic diet taken for two weeks alongside the drug letrozole is feasible and tolerable for people with early-stage, estrogen receptor-positive (ER+) breast cancer. Thirty-one postmenopausal participants followed the diet before surgery. The main goal was to see if participants could stick with the diet and if researchers could measure changes in tumor growth and insulin signaling. This study focused on safety and feasibility, not on curing the disease.