Physicians, to the best of my knowledge, do not receive nutritional training. The result is that they don’t ever give recommendations for how diet changes can help with a condition. Example: Dr. Fauci (or any national health “expert” or even news programmijg ever mentioned that the same type of immune system enhancing vitamins like vitamin D and C would be a good idea to take).
I had cancer and I did consult briefly with a nutritioniat but is was pretty basic targeted towards how to keep your weight up and certain foods to avoid due to possible exacerabating side effects of treatments. Then I read a significant portion of Natural Strategies for Cancer Patients by Russell L. Blaylock, M.D. which detailed out certain molecules in certain foods that actually inhibit specific mechanisms of cancer process, then it detailed which fruits or vegetables had the highest concentration of that. Also certain preparation methods of food to avoid - raw vegetables vs cooked. Avoid red meat and charred meats. This type of information should no be buried in a book that many will never see. This information should be summarized and given to every cancer patient so they have the most tools in their tool belt and are taking every action within their control to improve their outcome.