Up to a point, at least, they trust the crowd members to self-regulate.

至少在一定程度上，他们相信群体成员会自我约束。

People want more control over what is done to their bodies. They want to self-regulate their own health.

人们希望能更多地掌控对其身体所作的治疗。他们希望对自己的健康进行自我调节。