| 1 | substance|alcohol|drug|opioidabuse|misuse|withdrawal|abstinence|addict|craving|dependency|illegal|illicit|overdose|prevention|use|user|recreational|recovery exercise|"physical activity"|fitness|sedentary |
| 2 | substance|alcohol|drug|opioid abuse|misuse|withdrawal|abstinence|addict|craving|dependency|illegal|illicit|overdose|prevention|use|user|recreational|recovery exercise|"physical activity"|fitness|sedentary UK|"United Kingdom"|England|Britain|NHS |
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