President-elect Donald Trump said he wants Marty Makary, a Johns Hopkins surgeon and author who argued against pandemic lockdowns, to lead the U.S. Food and Drug Administration.

“He will work under the leadership of Robert F. Kennedy Jr. to, among other things, properly evaluate harmful chemicals poisoning our Nation’s food supply and drugs and biologics being given to our Nation’s youth, so that we can finally address the Childhood Chronic Disease Epidemic,” Trump said in his announcement.

If confirmed by the Senate, Makary’s job would be to oversee the FDA’s $7 billion budget and report to the health secretary. The agency oversees $3.6 trillion in food, tobacco and medical products, including some 20,000 prescription drugs on the market.

Here are three things to know about Makary:

Makary is a respected transplant surgeon who questioned his colleagues’ recommendations on COVID

Makary was known during the pandemic as an experienced medical expert willing to challenge his colleagues’ assumptions on COVID, although he was often criticized by his peers for cherry-picking data or omitting context.

He frequently appeared on Fox News and wrote opinion articles that questioned the value of lockdowns and masks for children. He supported the use of vaccines but opposed mandates and doubted the utility of boosters, at odds with full-throated recommendations on boosters from the Centers for Disease Control and Prevention.

Among his views was that the U.S. government was underestimating the number of people who were likely immune to the virus. In early 2021, he predicted much of the country would reach “herd immunity” by that April, reducing risk of the virus dramatically.

That assumption, however, did not happen.

As restrictions eased and a new variant surfaced, virus-related deaths soared from about 4,000 a week to about 15,000 a week by September, making 2021 a deadlier year than when the pandemic began.

Makary stood by his assertion that “natural immunity” was still being underestimated by the U.S. government.

“One reason public health officials may be afraid to acknowledge the effectiveness of natural immunity is that they fear it will lead some to choose getting the infection over vaccination. That’s a legitimate concern. But we can encourage all Americans to get vaccinated while still being honest about the data,” he wrote a separate opinion article in The Washington Post.

He sounds a lot like RFK Jr. when talking about the ‘poisoned’ food supply, pesticides and ultra-processed foods.

After the pandemic, Makary began turning back to his initial focus railing against an overpriced health care system. He’s long argued that the system is broken, overcharging patients and running unnecessary tests.

He also began speaking more critically about America’s food system, echoing a message embraced by Trump’s pick for health secretary, Robert F. Kennedy Jr.

“We’ve got a poisoned food supply. We’ve got pesticides. We’ve got ultra-processed foods and all sorts of things that have been in the blind spots in modern medicine,” Makary told Fox News this September.

Kennedy also would require Senate confirmation to get the job.

In a later interview, Makary praised Trump’s decision to pick Kennedy.

“He wants to address corruption in health care and corruption in our government health agencies,” he said.

He warns against ‘drugging our nation’s children.’

It’s not clear exactly what Makary would do if confirmed as FDA commissioner, as much of his work would likely be steered by Trump and the incoming health secretary, possibly Kennedy.

But Makary has previously suggested an overhaul of FDA’s “erratic” bureaucracy, which he says was too eager to approve opioids and too cautious when it came to other drugs like the COVID antiviral pill Molnupiravir.

“For too long, FDA leaders have acted like a crusty librarian who gets annoyed when someone wants to borrow a book. But then give preference to people they like,” Makary wrote in a 2021 opinion article in Fox News.

More recently, he’s called for a ban on cell phones on schools, and praised Kennedy for questioning the use of anti-anxiety and anti-obesity drugs in children.

“What he is really focused on is this concept that we can’t keep drugging our nation’s children,” Makary said of Kennedy.

When asked if Kennedy can accomplish what he wants to do in four years, Makary told Fox News he’ll try by bringing in more scientists and letting “them do good work.”

Kennedy “is really the quintessential environmental health attorney of our era, and that may be the quintessential issue of our era,” Makary said.