Doctors estimate up to one in three adults may have undiagnosed iron deficiency, a key factor in fatigue and poor health.

Robert F. Kennedy Jr. repeatedly asked to see "data" or "science" showing vaccines are safe — but when an influential Republican senator did so, he dismissed it.

As confirmation hearings begin for RFK Jr. nomination as secretary of the Department of Health and Human Services, many are ...

As confirmation hearings begin for RFK Jr. as secretary of HHS, many are focused on domestic agenda. But HHS has a vast ...