Tag: Deryn Blackwell

Did cannabis oil save Deryn Blackwell, the “boy in seven billion,” when his bone marrow transplant for two cancers was failing?

In a forthcoming book The Boy in 7 Billion, Callie Blackwell claims that cannabis oil, which she had started giving her son Deryn to relieve his symptoms during a bone marrow transplant for two cancers, actually saved his life when the bone marrow transplant appeared to be failing. Unfortunately, her story appears to be another testimonial that confuses correlation with causation.