An online grief intervention to improve well-being and reduce clinical symptoms: a randomized controlled trial.

The COVID-19 pandemic amplified the emotional impact of losing a loved one, deteriorating well-being, and increasing dysphoric symptoms in mourners. This study evaluated the efficacy of COVID Grief, a self-applied online cognitive-behavioral intervention for Mexican adults facing grief during the pandemic. We conducted a randomized clinical trial, enrolling 1,109 participants, 45 of whom completed the full intervention, and 69 of whom completed the waiting list control (WLC).