A physician questions the COVID vaccine data from Israel
Bloodletting may be the best-known example of a once widely used, faulty medical treatment, but there are many more. Hormone replacement therapy for postmenopausal women, famously touted by experts, turned out to be complicated and sometimes harmful.
The list of medical reversals is long, and one cause is common. When observational studies compare people in the community who receive treatment with those who don’t, the treatment …