Mama Mia! Joe Biden had fellow diners at a fancy Italian restaurant concerned for his health , RadarOnline.com can report, after the frail former president slowly stumbled his way through a crowd of patrons.

Biden turns 83 next week and has seldom been seen as he battles an aggressive form of prostate cancer. Article continues below advertisement

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Biden was surrounded by Secret Service agents as he slowly walked inside the Arlington, Va. restaurant Carbonara. The ex-president was greeted with a smattering of applause and appreciation.

However, the reaction on social media was far less approving, as many critics pointed out his diminished reflexes.

"He looks absolutely lost," one person tweeted, as another piled on: "Lol. He is

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