In the Trump administration’s campaign to promote healthy eating, Robert F. Kennedy Jr. has not stopped at his slogan urging people to “eat real food” to prevent disease. In recent speeches and podcast appearances, the nation’s health secretary also has claimed that diet can “cure” schizophrenia and diabetes and allow people to rid themselves of bipolar disorder diagnoses. Researchers say the comments overstate current evidence about the real and promising role that food can play in managing