Red Dye No. 3

I don't spend a lot of time thinking about Red Dye No. 3, but a short article in the most recent Skeptical Inquirer by McGill University's Joe Schwarcz makes it clear it doesn't cause cancer and is very unlikely to cause behavioral problems in children. 

The FDA moved to ban the dye before RFK Jr. came into office. 

The initial evidence, so-called, for its carcinogenic effect came only from results in male rats fed 25,000 times the amount a human child would consume. A follow-up, where rats were fed that same high amount, didn't even find cancer in the male rats: it found instead an increased level of a thyroid hormone thought to be associated with cancer. That was then extrapolated to carcinogenic effect.

As far as child behavioral problems go, Schwarcz reports there is no good testing of Red Dye No. 3 for that. 

He ends by saying he is still not a fan of food dyes, since the foods they are added to are highly processed and the dyes are meant to make them more attractive. But the dye itself is not the health issue.