In her 2024 book, Good Energy—which Means co-wrote with her brother, Calley, who is now a senior adviser to Health and Human Services Secretary Robert F. Kennedy Jr. and also a key figure in the MAHA movement—she advises readers to avoid tap water and conventionally grown food, and to trust themselves rather than their doctors. She recommends getting “one cumulative hour of very hot heat exposure” each week and says that people should optimize their health by using a glucose-monitoring device, which is, helpfully, available through Levels Health, a company she co-founded.