“…Specifically, cortisol response to opioid antagonists are higher in those at risk for alcoholism based on a positive family history (King et al, 2002a; Wand, Mangold, Ali, & Giggey, 1999; Wand et al, 1998; Wand, McCaul, Gotjen, Reynolds, & Lee, 2001), but not all have found this association (Lovallo et al, 2012). Furthermore, among alcohol-dependent participants HPA activity appears to be blunted compared to controls (Inder et al, 1995; Kemper et al, 1990) although not in all studies (Wand et al, 2012). Thus, the significance of what cortisol responses to opioid antagonists indicates about opioid signaling within and across addictions is not clear.…”