HEATH (plagiarism/outsource) is a 2009 book by Tan Lin. Lin devotes part of the book to a series of web searches regarding the death of Heath Ledger in Untilted Health Ledger Project, which is assumed to be the reason for the name of the whole book.

Tan Lin is a poet, novelist, filmmaker, and new media artist born in Seattle to Chinese American parents from Shanghai. With a BA from Carleton College and an MA and PhD from Columbia University, his work is tied to cultural and media studies with an emphasis on issues involving copyright, plagiarism, and technology. He currently teaches creative writing at Columbia University and New Jersey City University.

His other works include the poetry collection Seven Controlled Vocabularies and Obituary 2004: The Joy of Cooking (2010) and most recently, Insomnia (2011). He has also received several awards, including an Andy Warhol Foundation/Creative Capital Arts Writing grant and an Asian American Arts Alliance’s Urban Artist grant.

HEATH is part of a series of works categorized as "uncreative writing", in which texts and pictures previously written or created by others are compiled into a different work in order to convey a different feeling or message. Other "uncreative" writers include Kenneth Goldsmith and Stephanie Barber.

Tan Lin incorporates several types of sources.

The text presents somewhat of a "confession" to plagiarism, as Lin quotes "numerous works were plagiarized while writing this text, in terms of ideas or turns of phrase, which the author attempted to imitate."

Notes Towards the Definition of Culture is about the subject of writing through technology. HEATH reviewer Laurie Macfee asks, "Is an RSS feed a manifestation of collective intellectual achievement, a form of art, or is it more related to the scientific notion of culture and an artificial medium that promotes or cultivates replication?"

The title of this section is "plagiarized" from author T.S. Eliot's own Notes Towards the Definition of Culture, written in 1948.