A Consumer Reports investigation has found that some infant formulas contain potentially harmful levels of lead and arsenic.

A new Consumer Reports investigation of infant formulas found that some of the products tested contained potentially harmful levels of arsenic and lead. CR also found per- and polyfluoroalkyl substances (PFAS) in almost all the infant formulas tested and one that contained both bisphenol A (BPA) and Acrylamide.

Manufacturers contest some of the findings as Health Secretary Robert F. Kennedy Jr. vows to tighten the FDA's regulation of infant formula.

The FDA and HHS announced "Operation Stork Speed" Tuesday, which aims to increase testing for heavy metals and other contaminants in baby formula.

The U.S. Food and Drug Administration (FDA) is stepping up testing for heavy metals in infant formula and reviewing key nutrients required in these products, federal health officials said.

The FDA would embark on a comprehensive look at the nutrients used in infant formula and increase testing for heavy metals and other contaminants, HHS said in its statement.