A B S T R A C TBackground The use of social media (SM) as a surveillance tool of global illicit drug use is limited. To address this limitation, a systematic review of literature focused on the ability of SM to better recognize illicit drug use trends was addressed. Results Selected studies used a range of SM tools/applications, including message boards, Twitter and blog/forums/platform discussions. Limitations included relevance, a lack of standardized surveillance systems and a lack of efficient algorithms to isolate relevant items.Conclusion Illicit drug use is a worldwide problem, and the rise of global social networking sites has led to the evolution of a readily accessible surveillance tool. Systematic approaches need to be developed to efficiently extract and analyze illicit drug content from social networks to supplement effective prevention programs.Keywords illicit drug prevention, social media surveillance, systematic review
IntroductionIllicit drug use is a foremost global public health issue facing individuals, families and society contributing to significant morbidity among youth and adults. 1 In 2014, over a quarter of a billion adults worldwide used drugs, and of these individuals 29 million are estimated to suffer from a drug use disorder and 12 million inject drugs. It is estimated that 14% of drug users are living with human immunodeficiency virus. In 2014, there were >207 000 drug-related deaths worldwide. Global regional differences exist in consumption patterns of illicit drug use; for example, recent trends indicate cocaine use is greater in western and southern European countries whereas amphetamine use is higher in Northern and Eastern Europe. 1,2,3 The prevalence of illicit drug use among US young adults was 21.5% and 22% among those transitioning into young adulthood (18-25 years). 4 In the USA, the most commonly used drugs are tobacco, alcohol, cannabinoids, opioids, stimulants, club drugs, dissociative drugs (Phencyclidine, Salvia divinorum, etc.), hallucinogens, inhalants and prescription medications (pain relievers).5 Cannabis is rated as the most preferred used drug globally with overall use not falling and increasing in some populations.1 Adderall is also widely used by young adults.6 Among first-time illicit drug users,~25% use non-medical prescription drugs, 6.3% use inhalants and 2% hallucinogens.5 Among young adults, there is also a high prevalence of polydrug use: i.e. a combination of 7 The most commonly used substance is alcohol: 42% of young adults have indulged within the past 30 days. 4 Prescription drugs are readily available in doctors' offices and home medicine cabinets and can be bought anonymously without a prescription from drug dealers and through the internet. Emerging new recreational drugs among young adults include synthetic cathinones 'bath salts,' synthetic cannabinoids and Salvia divinorum. 6,8,9 Globally, illicit drug use is highest among 18-25 year olds, 1 an age range shared by most active users of internet/ social media (SM).9,10 Social networking site...