The Rebbe responds warmly, emphasizing that Torah instructs us to follow a doctor's orders regarding health, as the doctor is merely a messenger empowered by Torah. Even if one doesn’t fully understand or agree, Torah remains the will and wisdom of Hashem, and its directives benefit both body and soul. He encourages following medical advice joufully

https://www.torahrecordings.com/rebbe/igroskodesh/015/009/5475