The greatest metabolic problem in the United States, obesity, has strong ties to the addictive hyperpalatable ultraprocessed foods high in simple sugars and fats that comprise the majority of the Standard American Diet, and he’s not made any mention of it, let alone take any action to address it.

He's absolutely talked about it. It was a core marketing and campaign promise of his.

But has he actually pushed forward any meaningful legislation or rules that would actually reduce or eliminate the harms of UPFs yet? No, not really.

https://hsph.harvard.edu/news/will-rfk-jr-really-curb-ultra-processed-foods-like-he-promised-experts-weigh-in/

Will RFK Jr. really curb ultra-processed foods, like he promised? Experts weigh in. | Harvard T.H. Chan School of Public Health

HHS Secretary Robert F. Kennedy Jr. has targeted ultra-processed foods, saying they’re a major contributor to chronic disease in the U.S. Some food experts welcome his stance, others are skeptical if food policy changes will come to fruition.

Harvard T.H. Chan School of Public Health