Have not heard of this man, but wow; great to read about him
And especially reading this,
"His fasting led to a keen interest in nutrition. Working in the 1980s with a Swedish health food company, Mr. Gregory developed a weight-reduction powder called Slim-Safe Bahamian Diet. The partners had a falling-out, and the business swooned.
Still, Mr. Gregory remained a fervent health-food advocate. In late 1999, he learned he had lymphoma but rejected chemotherapy, relying instead on vitamins, herbs and exercise. The cancer went into remission."
I have heard quite a few reports of people going natural, Ayervedic (not sure of spelling but it is some India way of natural remedies), and avoiding pharmaceutical poison and cancer diagnosis disappears.