They suggest beauty should not be defined by looks that end up impinging on health.
请问句中的 that 是否与suggest连用，到底充当了什么成分?而且句子使用了虚拟语气吗？
这里的 that 与suggest无关。that end up impinging on health 是定语从句，修饰 looks。
that 是关系代词，在定语从句中作主语。
