Health and Human Services Secretary Robert F. Kennedy Jr. has announced new guidelines at the department that will recognize two sexes.

“This administration is bringing back common sense and restoring biological truth to the federal government,” Kennedy said in a statement on Wednesday.

This announcement comes just a few days he was confirmed to serve as the country's health secretary. 

According to the memo, a person's sex is defined as an "immutable biological classification as either male or female."

The department also unveiled a new webpage titled "Protecting Women and Children."

"A person's sex is unchangeable and determined by objective biology," the page reads. "The use of hormones or surgical interventions do not change a person's sex because such actions do not change the type of gamete that the person's reproductive system has the biological function to produce."

Since taking office, President Donald Trump has taken steps to reverse policies regarding gender, such as banning transgender troops from the military.