A person is guilty of an offence who—
A person is guilty of an offence who—
any food rendered injurious to health by means of any operation described in subsection (1), subject to subsections (3) and (4).
In proceedings under this section for an offence consisting of the advertisement for sale of any food, it is a defence for the person charged to prove that, being a person whose business it is to publish, or arrange for the publication of, advertisements, he received the advertisement for publication in the ordinary course of business.
In determining for the purposes of this Act whether an article of food is injurious to health, regard shall be had not only to the probable effect of that article on the health of a person consuming it, but also to the probable cumulative effect of articles of substantially the same composition on the health of a person consuming such articles in ordinary quantities.