The U.S. Environmental Protection Agency launched the first step of its expedited review to determine safe levels of fluoride in drinking water, according to a notice posted in the Federal Register on Wednesday, advancing a priority of the Trump administration’s “Make America Healthy Again” agenda. The agency’s final toxicity assessment will inform potential revisions to fluoride drinking water standards under the Safe Drinking Water Act and will also support the Centers for Disease Control and Prevention’s recommendations on fluoride in drinking water, according to the notice.