Over the past decade, Dr. Mercola has undertaken a massive operation to advance natural health therapies, disseminate anti-vaccine materials and make a profit from all of them, said researchers studying his network. In 2017, he filed an affidavit claiming that his total assets were “over 100 100 million.”

And online, directly stating that the vaccine does not work, Dr. Mercola’s posts always ask pointed questions about her safety and discuss studies that have been rejected by other doctors. Facebook and Twitter have allowed some of their posts to live with caution labels, and companies have struggled to create rules to pull down sensitive posts.

Imran Ahmed, director of the Center for Countering Digital Hat, said, “Social media has given him a new lease of life, which he has exploited skillfully and ruthlessly to bring people into the fold.” Her “disinformation dozens” of reports have been cited in congressional hearings and by the White House.

In an email, Dr. “It’s very strange to me that I’ve been named the # 1 superhero of misinformation,” Mercola said. Some of his Facebook posts were only liked by hundreds of people, so he didn’t understand how “a relatively small number of shares in Biden’s millionaire vaccination campaign could cause such a disaster.”

Efforts against him are political, Dr. Mercola added, and he accused the White House of “illegal censorship by associating with social media companies.”

He did not pay attention to whether the claims of coronavirus are facts. “I am the lead author of a peer-reviewed publication on the risks of vitamin D and covid-19, and I have a right to publicly share my medical research,” he said. He did not recognize the publication, and the Times could not verify his claim.

A native of Chicago, Dr. Mercola started a small private practice Shemberg, Ill., 1985. In the 1990s, he began moving toward natural health medicine and opened his main website, Mercola.com, to share his treatments, therapies and advice. This site urges people to “take control of your health.”