West Virginia has banned most foods containing artificial food dyes. Gov. Patrick Morrisey (R-WV) on Monday signed into law a bill banning Blue No. 1, Blue No. 2, Green No. 3, Yellow No. 5, Yellow No.

A 2021 review of scientific studies by California state scientists concluded that consuming the dyes may increase hyperactivity and other behavioral problems in some children. The F.D.A. has maintained that food dyes (with the exception of Red No. 3) are safe when used according to regulations.

Citing potential health risks, West Virginia signed into law a ban of seven artificial food dyes and two preservatives from drugs and food sold in the state.