please summarize this In the last 20 years there have

please summarize this In the last 20 years there have been numerous changes evident among the population who use substances whether this be alco‐ hol or other drugs. The most important changes appear to be an increase in the number of older drugs users, a subsequent rise in rates of death from non‐drug related conditions (Beynon, 2010), an increase in alcohol‐related morbidity among older users (Kaplan et al., 2012) and the burgeoning of New Psychoactive Substances (NPS) use. The increase in older drug users may be associated with changes to the treatment management for illicit opiate users in the 1990’s (McKeganey, 2006) and, in particular, the expansion and greater availability of methadone prescription (Clausen, 2008; Clausen, Waal, Thoresen, & Gossop, 2009). This increased availabil‐ ity means that increasing numbers of people with current and previ‐ ous substance use have better survival rates and are more likely to die from the same chronic conditions that affect the general popu‐ lation (Corkery, 2008; Beynon et al., 2010). It may be that some of this population are using substances for longer or commencing drug use later in life but, whatever the cause, there has been an increase in older drug users accessing drug

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