the lack of the use of medical treatment such as drugs or exercises to help a person with an illness or injury

The health authority have a recommended policy of non-treatment in such cases. 在这种情况下，卫生部门建议采取不治疗的政策。

Randomized control trials comparing the results of different types of treatment, and non-treatment, should be run. 应该进行随机对照试验，比较不同类型治疗和非治疗的结果。