John Salton, a 63-year-old vegan ultra-runner from Bright, Australia, died in 1985 when he was 25 . It wasn't long after he decided to give up dairy farming, mainly due to the stress levels, that he developed colon cancer . Advertisement This as-told-to essay is based on a conversation with John salton . In 2017, I decided to run up and down Mt Buffalo near where I live for 40 consecutive days, which is what