Identify Any Fallacies in the Following Passage Either by Naming

Identify any fallacies in the following passage either by naming them or, where they seem not to conform to any of the patterns described in the text, by giving a brief explanation of why the fallacious reasoning is irrelevant to the point at issue.
From a letter to the editor: "They're wrong again, the doctors who say that the sun causes cancer. The four substances for all life are water, food, air, and sun. Everybody knows the sun opens the pores of your skin to poisons; it cannot cause cancer. Cancer is caused by the toxins man puts in the air, not by sunlight."
-Cascade News