Howard Lyman

饰：Himself

Noam Mohr

饰：Himself

Walter Willett

饰：Himself

Caldwell Esselstyn Jr.

Caldwell Esselstyn Jr.

饰：Himself

Neal Barnard

Neal Barnard

饰：Himself

彼得·辛格

Peter Singer

饰：Himself

Maneka Gandhi

饰：Herself