Douglas Sayer Ji (born October 10, 1972) is the founder of alternative medicine portal GreenMedInfo, a website known for promoting various pseudoscientific publications.

[5] While he earlier had invited his readers to be suspicious of governments, health authorities and pharmaceutical companies, during the COVID-19 pandemic Ji joined other proponents of alternative medicine in embracing conspiracy theories about allegedly oppressive global organizations.

[5] The Center for Countering Digital Hate identified Ji as one of twelve individuals promoting most of the misinformation that can be found online about vaccines, along with his spouse (at the time) Kelly Brogan, Robert F. Kennedy Jr., Christiane Northrup, Ty and Charlene Bollinger, and supplement giant Joseph Mercola.

[12][13][11] He promotes anti-vaccination videos sold by Ty and Charlene Bollinger and receives a commission whenever his referrals result in a sale, a practice known as affiliate marketing.

The couple often appeared together in videos promoting their respective products and workshops, presenting their relationship in spiritual terms, such as "Our Spiral Path".

The round table, held June 27, 2023, brought together several prominent anti-vaccination activists, such as Mikki Willis, Del Bigtree, Charles Eisenstein, Sherri Tenpenny and Joe Mercola.