How controversial nutritionist John Harvey Kellogg pioneered the path to modern plant-based eating

MVelishchuk/Shutterstock

When you hear the name Kellogg, Corn Flakes might be the first thing that comes to mind. But John Harvey Kellogg is famous for more than just breakfast cereals.

In many respects, this American doctor, nutritionist, inventor and entrepreneur was ahead of his time. Perhaps the first wellness influencer over a century before Gwyneth Paltrow got in on the act, he advocated startlingly similar treatments and practices.

But Kellogg was also a divisive figure...