the practice of taking a very small dose (= measured amount) of a psychedelic drug (= one that affects the mind) in order to become better at solving problems or at thinking of new ideas, or to treat medical problems such as anxiety, depression, or headaches

How much of a risk is microdosing? 微量用药的风险有多大？

People have experimented with psychedelic microdosing to treat ailments from anxiety to attention deficit hyperactivity disorder. 人们曾尝试用微剂量迷幻药来治疗多种疾病，比如焦虑症、注意力缺陷多动症等等。