Health and Human Services Secretary Robert F. Kennedy Jr. said Tuesday the U.S. will begin phasing out the use of petroleum-based synthetic food dyes. Kennedy has accused food makers of “mass poisoning” children with additives frequently found in junk food.

This comes as the Trump administration continues to slash public health programs. This week, the Women’s Health Initiative said contracts supporting its regional centers are being terminated in September. The landmark research project enrolled tens of thousands of participants in clinical trials of hormones and other medications for over three decades.

Separately, Politico is reporting Robert F. Kennedy Jr. may pull COVID-19 vaccines from the government’s list of recommended immunizations for children. This comes after the Trump administration scrubbed websites of information on how to manage COVID through tests, vaccines and treatments. The sites now promote the debunked conspiracy theory that COVID-19 emerged from a virology lab in Wuhan, China.