Image Credit: Anadolu via Getty Images Robert F. Kennedy Jr., a.k.a RFK Jr., is currently the U.S. Secretary of Health and Human Services (HHS). The politician, who was chosen by Donald Trump to lead the HHS, has advocated for change in how the U.S. manages public health, particularly vaccinations. Since RFK Jr. has appeared in multiple public events and hearings, the public is curious about his own health. For years, many have wondered why RFK's voice sounds raspy whenever he speaks. Learn all about RFK Jr.'s health history below. How Is RFK Jr. Related to Late President JFK? RFK Jr.