Nonetheless, the history Read recounts allows readers to infer how MLM might win over adherents. She sketches a vivid portrait of a cultish culture, replete with its own rituals and vocabulary.

“Perhaps above all, MLM allows participants to ‘refer to themselves as bosses’ and therefore to enjoy a central American currency: not actual money but the performance of entrepreneurial success. As one former FDA employee, reflecting on the agency’s attempts to regulate Nutrilite, once said, ‘Americans want to believe in tonics.’ In the absence of real medicines—real economic opportunities—placebos and miracle cures will always appeal.”