CHARLESTON, W.Va. (AP) — Synthetic dyes used to make brightly colored cereals, drinks and candies are coming under scrutiny in states across the country, where lawmakers say the federal government has stalled in taking action despite evidence of harmful effects.

West Virginia has put one of the country's biggest bans on artificial food dyes and preservatives. Supporters say it’s a step toward better public health, while some worry about higher food costs.