Quacks!
Quacks! contains four complete works, one by Edward Hooker Dewey, M.D., two by John Harvey Kellogg, M.D., and one by the Lydia Pinkham Company.
Dr. Dewey describes the effects of a no-breakfast diet and a severe fasting cure, both of which are strongly contradicted by modern science.
Dr. Kellogg recommends a diet highly based on grains (no surprise, given that he founded the major cereal company that bears his name) but which will not supply all the nutrition now understood to be necessary.
His advice on both male and female sexuality seems bizarre to even the most unsophisticated modern reader.
The Lydia Pinkham Company made a considerable amount of money selling various nutritional supplements. Read this one carefully