Racism is a serious threat to public health, the head of the Centers for Disease Control and Prevention declared last week.

The federal agency was a little late to a conclusion long backed by streams of research and other medical groups. The American Public Health Association says there are more than 170 municipalities that have embraced the concept.

The endorsement of the country’s top public health agency is significant in what it can mean for the direction of research dollars and the focus on health strategies in this country, and in whose life experiences matter.

CDC director Dr. Rochelle Walensky also unveiled a new web portal focused on racism and health to show the agency is taking the issue seriously.

Racism dating back to slavery has battered millions of Black bodies and minds. People of other races, including Asians undergoing racial attacks during COVID-19, are also victim to the long-term damage caused by racism.

Racial and ethnic minority populations experience higher rates of poor health and disease, including diabetes, hypertension, obesity, asthma and heart disease when compared to white Americans, according to CDC data. Then there’s the stress, trauma and mental anguish dealing with racial bias on a daily basis brings. The life expectancy among Black/African Americans is four years lower than that of white Americans, and we can blame racism.

We’ve seen the disparity play out during the pandemic as the rates of death and infection among people of color outpace that of white Americans. But to really get an understanding on the toll systemic racism plays on health, just look at police killings in a country where African Americans die at higher rates than other races at the hands of law enforcement. We are reminded too often.

This week we heard the story of Army officer Caron Nazario, who said in a lawsuit he feared for his life after being pulled over by two police officers in Virginia, for a reason that is still not entirely clear.

“I’m honestly afraid to get out,” Nazario is heard on video saying to the officers who have weapons drawn as they ask him to get out of his vehicle. “Yeah, you should be,” one officer said. Even a man trained for war has a fear of the cops.

Black Americans are nearly three times more likely to be killed by police, and with each death the mental health of the community left behind is harmed, according to 2018 research published in The Lancet from the Perelman School of Medicine at the University of Pennsylvania and the Boston University School of Public Health. The researchers compared the number of poor mental health days experienced by Black Americans surveyed after a police killing of an unarmed person to that of Black Americans living in the same state surveyed before that event.

They found police killings could contribute 1.7 additional poor mental health days per person every year, or 55 million more poor mental health days every year among African Americans. Compare that to diabetes, which is responsible for an estimated 75 million poor mental health days among Black Americans. The toll of bias in policing is heavy.

The CDC in its acknowledgment of the role of racism on health is only formalizing what generations of African Americans live every day. Time will tell if the institutional change that is needed to relieve that health toll will actually happen. We wish them well. Many of us, however, aren’t too optimistic. If video cameras and eyewitness accounts haven’t halted police killings, I’m not sure what will.

Andrea K. McDaniels is The Baltimore Sun’s deputy editorial page editor.