my translation

为美国卫生机构官员提供咨询的预防疾病服务工作组(The Preventative Services Task Force)说，对身体健康的男子而言，一种叫做PSA的简单验血可能弊大于利。

The Preventative Services Task Force, which provides consultations for officials of US health organizations, said that to a healthy man, PSA, which is a simple blood test procedure, could post more harms than benefits.