Republican National Committee Chairman Reince Priebus says former Secretary of State Hillary ClintonHillary Rodham ClintonWant a tremendous deal on infrastructure spending? Suspend Davis-Bacon Constitutional amendment could vastly improve campaign finance The Hill's Whip List: Who to watch on GOP's new ObamaCare bill MORE should be prepared to answer questions about her health if she wants to run for president in 2016.

Her “health and age is fair game,” Priebus said during an appearance on NBC’s “Meet the Press” on Sunday.

Last week, Republican strategist Karl Rove said Clinton’s 2012 head injury should be a factor in determining whether she runs for president in 2016.

People asked similar questions of President Ronald Reagan and Sen. John McCain (R-Ariz.) when they ran for president, so asking those questions of Clinton is fair, Priebus said Sunday.

He declined to speculate on the condition of Clinton’s health.

“I’m not a doctor. What I do know is that the issue is going to come up,” he said.

Priebus pushed back on the idea that Republicans are using questions about her health and age to keep Clinton from running.

“It’s not the mission,” he said.