John Harvey Kellogg died on December 14, 1943, in Battle Creek, Michigan, at the age of 91. His death marked the end of a long and influential life dedicated to health reform, medicine, and the development of the breakfast cereal industry.

Fire struck the Herald on December 30, 1902, where Kellogg's book "The Living Temple" was typeset and ready to print. The book was criticized by White for what she considered its many statements of pantheism. This event added to the growing tensions between Kellogg and the Seventh-day Adventist Church.