A recent comment by one of our board members Brett Haberstick:
This is a timely and interesting review article that should provide a nice introduction to several active areas of research as it relates to sex addiction, drug use and their possible biological correlates. From a gene finding perspective individual differences in sexual activity may be a useful phenotype to understand how genes contribute to variation within populations for sexual behavior and drug use behaviors; either together or individually. Although adopting such a perspective is still not widespread, doing so may ultimately lend itself to greater insight into the substantial medical and public health issues caused by promiscuity and addiction. The novelty of this review article is the inclusion of withdrawal. Withdrawal is often an important aspect of whether those attempting to quit chronic drug use relapse and, as the review points out, hasn't really been fully investigated respective to sex addiction. A wider literature review could have been included, nonetheless, it should serve as a good introduction for future research on these topics, and more generally reward deficiency syndrome.