A low carb diet is useful, especially in terms of avoiding obesity, which is a risk factor for breast and colon cancer. Linda wasn't obese. Once the cancer has started, the cancer cells use up nutrition, leaving little for normal cells to use. A diet to "starve" any cells will preferentially starve your normal cells, including all your immune cells. The cancer cells will continue "robbing" the normal cells of any nutrition. YouTube, Google, and the internet in general has a ton of useful information, but unfortunately, it also has a ton of misinformation, outright lies, and scammers who are just interested in taking your money. Thanks for your concern, but you have to be careful on the internet, especially when it comes to health information.