Petition Meat is without a doubt a demerit good, why is it not taxed like one?

Meat is a demerit good, meaning that it causes external costs. This is based on recent studies conducted by the WHO which proved that meat causes cancer and reduces the life span of consumers. Therefore, isn't it the best for the public interest to tax it like a demerit good?

More details

Study that proves that meat causes cancer:
http://www.cancer.org/cancer/news/news/world-health-organization-says-processed-meat-causes-cancer
"A huge study showed that women who do not consume meat live 4.42 years more and men live 7.28 years longer"
http://www.lifeextension.com/magazine/2006/1/awsi/Page-01

This petition is closed This petition ran for 6 months

16 signatures

Progress of the petition towards its next target: 16 of 10,000 signatures required to get a government response

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10,000 signatures required to get a government response

Date closed 16 June 2016
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