Addiction, intoxicants and the humoral body

Taking the humoral body as its spatial focus, this article considers how medical writers and practitioners engaged with ‘intoxicants’ both in terms of the prescription of medicines and in the conceptualization of compulsive consumption – or what is often styled by modern practitioners as ‘addiction’. Focusing in the first instance on the compilers of vernacular pharmacopoeia – compilations of medical ingredients and techniques – the article argues that just as sugar, tobacco, and especially opiates had a significant and possibly transformative role in everyday physic, so the ‘operation’ of opiates, distilled spirits, and tobacco was crucial in stimulating new thinking about how bodies became substance-dependent. The article also argues, however, that, in order to conceptualize the problem, writers turned to the venerable language of custom rather than the relatively new language of addiction – in particular, the ancient idea of custom as ‘second nature’.