After studying what he believes extensively, I'm convinced that in terms of how life would look on the ground level, RFK Jr.'s proposals would definitely cause the biggest changes to society.
His involvement would lead to the mass banning of unsafe consumer products and probably a ton of lawsuits, which would radically change (or kill) entire industries and basically reshape the way most people live and eat.
A lot of products would suddenly look very different without dye. Established brands would be off the shelves and foods people are used to would taste extremely different without chemicals. Children will probably act different as they'd no longer be imbalanced by their diet. Our food supply would shift away from mass production and more towards local supply chains with fresh meat and produce. Removing plastic from our bodies would take the complete restructuring of the way we package things. Microwave meals would be a thing of the past until they figure out how to make it safe. Fast food places would have to close down.
The medical industry would be transformed overnight as the corruption is rooted out and a lot of doctors lose their license to practice medicine. Vaccines would be studied in depth for the first time in history. The unsafe aspects of normalized medical practices would be brought to light leading to a change in the entire industry.
Aside from that, certain industries would be pretty pretty much wiped off the map. Most mainstream pharmaceuticals along with their advertising would be banned. Weight loss drugs would also likely be banned for their links to cancer. Baby powder, plastic water bottles and make up would become things of the past that people look back on in horror. Overall the look and feel of society would be pretty unrecognizable. Less colorful in some ways but definitely more healthy.
Even after courts have ruled fluoride in drinking water is bad for our health only a couple of municipalities have stopped adding it to water. It will be very difficult to steer this juggernaut away from the rocks.
https://www.bigcountryhomepage.com/news/health-news/effective-immediately-city-of-abilene-stops-putting-fluoride-in-water/