Trace Amounts: Autism, Mercury, and the Hidden Truth is a 2014 vaccine-sceptical biographic film by Eric Gladen, who claims to have experienced mercury poisoning after receiving a tetanus vaccine. In the film, he presents his investigation on the cause of his condition, argues that vaccines should be made without mercury, and claims that mercury and aluminium content of vaccines is linked to autism, a claim that is contrary to the scientific consensus. The film questions a 2011 journal article which described the vaccine-autism connection as "the most damaging medical hoax of the last 100 years".