The current review highlights important progress in capturing and measuring gambling-related harm. Recent research has done a good job in identifying different categories of gambling harm, such as minor and severe gambling harms; however, issues still exist. Caution must be used when applying existing measures to estimate the total level of harm in the population. In particular, there is a need to distinguish between opportunity cost and harm. Some of the minor harms experienced by low risk gamblers may be costs associated with choosing gambling over other activities, rather than actual harms.
