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Trump believes diet soda kills cancer, reveals US health official
Most diet sodas are sweetened with aspartame, which is classified as "possibly carcinogenic to humans"

Trump believes diet soda kills cancer, reveals US health official

Apr 16, 2026
04:00 pm

What's the story

US President Donald Trump has defended his love for diet soda, claiming it might help prevent cancer. The revelation was made by Mehmet Oz in an interview with Donald Trump Jr, the president's eldest son. "Your dad argues that diet soda is good for him because it kills grass—if poured on grass—so, therefore, it must kill cancer cells inside the body," Oz said on Triggered with Don Jr podcast.

Soda defense

Oz's Air Force One anecdote

Oz, a cardiothoracic surgeon and television personality who now heads the Centers for Medicare and Medicaid Services, recalled a recent encounter on Air Force One. He said he found Trump with an orange soft drink on his desk. Oz revealed that Trump said that Fanta, which is made with orange juice from concentrate, could not be unhealthy because it is "fresh squeezed".

Fast food defense

Trump's fast food philosophy

Trump has long defended his preference for sweet drinks and fast food as part of his approach to staying healthy. "He doesn't want to get sick, so he eats junk food, but it's food made in large, reputable chains because they have quality control," Oz said on the podcast.

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Health concerns

Most diet sodas are sweetened with aspartame

Most diet sodas are sweetened with aspartame, an artificial sweetener that the International Agency for Research on Cancer (IARC) has classified as "possibly carcinogenic to humans." A 2022 study in France found a 15% higher risk of cancer associated with aspartame. However, this does not prove a direct cause-and-effect relationship. Research also suggests aspartame may affect the gut microbiome and metabolic health.

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Expert opinion

Response from medical professionals

Zachary Rubin, a pediatrician specializing in immunology, responded to the podcast by saying: "If Fanta is able to kill grass, then it could kill cancer cells, which means it must not be bad for you." "Therefore, by the same logic, that would mean that bleach is a superfood, which we all know doesn't make any sense." Owais Durrani, an emergency physician wrote on social media: "Friendly reminder from a doctor; diet soda or soda does not kill cancer cells."

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