Health and Human Services Secretary Robert F. Kennedy Jr. in a new interview said he's seen "boxes and boxes" of McDonald's food while traveling on Air Force One with President Trump, who he said eats fast food because he's worried about food poisoning.

"When you get on his airplane, it's just boxes and boxes of McDonald's," he said during an appearance on the "Net Positive" podcast.

One of the hosts, John Crist, asked Kennedy if he ever tried to correct Trump's diet or if it conflicted with the secretary's agenda. 

"I'm not like a scold," Kennedy responded. "He eats really good food most of the time, but when he's traveling, he likes to eat food from national chains because he's scared of getting food poisoning."

"When he's at Mar-a-Lago or the White House, that's the best food; it's all fresh produce, and a lot of it is locally sourced. So he is eating good food most of the time," he added.

Centers for Medicare and Medicaid Services (CMS) Administrator Dr. Mehmet Oz also joked in February about other items in Trump's diet.

"Your dad argues that diet soda is good for him because it kills grass. It's poured on grass, so therefore must kill cancer cells inside the body," Oz told Donald Trump Jr. on "Triggered," the president's son's podcast.

White House press secretary Karoline Leavitt laughed the comment off and said she heard the president also make the same joke.

Kennedy has gained public attention for his diet centered on fermented foods and grass-fed meat. White House officials have joined him on this regime, including Commerce Secretary Howard Lutnick and Vice President Vance.

Kennedy credited the diet for helping him lose 20 pounds in 30 days and easing issues with an irregular heartbeat. Former Speaker Kevin McCarthy (R-Calif.) said he lost 4 inches off his waist after adopting the plan.

Secretary of State Marco Rubio on Wednesday called Kennedy's diet "crazy."

He added that the diet was not for everyone and he encouraged people to try it out.

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