Stress relief is among the most common reasons people give for using cannabis, and it is among the most common themes in how cannabis products are marketed. The paper, "Subjective Stress and Diurnal Salivary Cortisol in Adults with Frequent Cannabis Use," was published in the journal Cannabis, with the university announcing the findings in July. Stressed people may use more cannabis, frequent use may alter stress physiology, or both may be true at once. Frequent cannabis users woke with higher circulating cortisol than infrequent or non-users, though the size of the morning cortisol rise was similar in both groups. Persistent stress, anxiety, low mood and sleep problems have treatments with substantially stronger evidence behind them.