The United States government has said it will amend a flagship report on children’s health that was found to have cited non-existent studies.

White House Press Secretary Karoline Leavitt said on Thursday that any citation errors were due to “formatting issues” and would be updated. The problems with the report will do little to assuage concerns over President Donald Trump’s appointment of Robert F Kennedy Jr as Health and Human Services Secretary.

The issues with the report, compiled and published last week by the Make America Healthy Again (MAHA) Commission, were revealed by digital news outlet NOTUS. It found that seven studies referenced did not exist, while there were also broken links and “misstated conclusions”.

Leavitt insisted that the problems do “not negate the substance of the report, which, as you know, is one of the most transformative health reports that has ever been released by the federal government”.

The report found that processed food, chemicals, stress and the overprescription of medications and vaccines could be factors behind chronic illness in children, citing more than 500 studies.

However, authors credited with producing some of those studies said that they were not part of the research, or that the studies did not exist.

Noah Kreski, a Columbia University researcher listed as an author of a paper on adolescent anxiety and depression during COVID-19, told the AFP news agency that the paper was “not one of our studies” and “doesn’t appear to be a study that exists at all”.

The citation for the report included a link to an article in the peer-reviewed JAMA Paediatrics Medical Review that was broken. A spokesperson for the JAMA Network said that the article referenced “was not published in JAMA Paediatrics or in any JAMA Network journal”.

The Democratic National Committee on Thursday slammed the report as “rife with misinformation”, accusing Kennedy’s agency of “justifying its policy priorities with studies and sources that do not exist”.

Kennedy’s approval as health secretary in February stirred significant controversy. He previously spent decades sowing doubt about the safety of vaccines, raising concerns within the scientific and medical communities over the policies he would pursue.

Since taking the role, he has fired thousands of workers at federal health agencies and cut billions of dollars from biomedical research spending.

“The substance of the MAHA report remains the same – a historic and transformative assessment by the federal government to understand the chronic disease epidemic afflicting our nation’s children,” the Department of Health and Human Services said.