During the COVID-19 pandemic he became embroiled in controversy for advocating an ivermectin-based purported "cure" for COVID-19 without transparently declaring his financial interest in it.
[3] Borody completed both his BSc(Med) and later MB BS degrees at the University of New South Wales, graduating in 1974.
He studied Tropical Medicine at Sydney University and later gained practical experience in the Solomon Islands in 1978 in general parasitology and the treatment of malaria, tuberculosis and leprosy before working at St Vincent's Hospital.
[5] He has also promoted FMT for other conditions, including irritable bowel syndrome, Crohn's disease and ulcerative colitis, but studies have yet to prove conclusively whether the treatment is effective.
[8] As of 22 December 2021[update] the Australian Government Department of Health says there is "insufficient evidence to recommend ivermectin, doxycycline and zinc (either separately, or in combination) for the prevention or treatment of COVID-19".