A Minnesota judge has ruled that a 13-year-old boy with a highly treatable form of cancer must seek conventional medical treatment despite his parents’ objections on religious grounds.

Daniel was diagnosed with Hodgkin’s lymphoma and stopped chemotherapy in February after a single treatment. He and his parents opted instead for “alternative medicines” based on their religious beliefs.

Daniel’s parents have been supporting what they say is their son’s decision to treat the disease with nutritional supplements and other alternative treatments favored by the Nemenhah Band.

A fifth of the nearly 200 concoctions tested contained levels of the toxic metals that, if taken at the maximum recommended doses, would surpass California’s safety guidelines.

Also: a review of Trick or Treatment, in which Simon Singh and Dr. Edzard Ernst report the results of hundreds of studies on the purported benefits of various alternative-medicine treatments.