If you've listened to any of Robert F. Kennedy Jr.'s public appearances, you may have noticed a quiver in his voice when he speaks. That's the result of a rare neurological condition known as ...

If you pay attention to the news, you've likely heard Robert F. Kennedy Jr. speaking and wonder what the story was, well, science has an answer.

The health secretary has previously shared how spasmodic dysphonia, a neurological voice disorder, impacts his speech and causes a "tremble." ...

Secretary of Health and Human Services Robert F. Kennedy Jr. has spoken to Oprah Winfrey in the past about people mistaking his voice for being emotional, but that's not it. So, just what has affected ...