A Department of Health and Human Services spokesperson called the move "a radical departure from past practices."

Public health experts warn that the change could lead to people getting a placebo shot instead of a necessary vaccine.

The HHS is set to require placebo tests for all vaccines moving forward. Kennedy is one of about 50,000 Americans who have spasmodic dysphonia. It may be time to add a handful of this nut to your daily snack rotation.