Practicing positive activities may serve as an effective, low-cost treatment for people suffering from depression, according to researchers at the University of California, Riverside and Duke University Medical Center.
Although antidepressants can be lifesaving for some individuals, initial drug therapy produces full benefits in only 30 percent to 40 percent of patients. Even after trying two to four different drugs, one-third of people will remain depressed.
In their paper, which appears in the August 2011 issue of the Journal of Alternative and Complementary Medicine, the team of UCR and Duke psychology, neuroscience and psychopharmacology researchers proposed a new approach for treating depression – Positive Activity Interventions (PAI).
PAIs are intentional activities such as performing acts of kindness, practicing optimism, and counting one’s blessing gleaned from decades of research into how happy and unhappy people are different.
This new approach has the potential to benefit depressed individuals who don’t respond to pharmacotherapy or are not able or willing to obtain treatment, is less expensive to administer, is relatively less time-consuming and promises to yield rapid improvement of mood symptoms, holds little to no stigma, and carries no side effects.
The paper, “Delivering Happiness: Translating Positive Psychology Intervention Research for Treating Major and Minor Depressive Disorders,” features a rigorous review of previous studies of PAIs, including randomized, controlled interventions with thousands of normal men and women as well as functional MRI scans in people with depressive symptoms.
“Over the last several decades, social psychology studies of flourishing individuals who are happy, optimistic and grateful have produced a lot of new information about the benefits of positive activity interventions on mood and well-being,” said one member of the research team, Sonja Lyubomirsky, professor of psychology and director of the Positive Psychology Laboratory at UC Riverside.
However, such findings have not yet entered mainstream psychiatric practice.
“Very few psychiatrists collaborate with social scientists and no one in my field ever reads the journals where most happiness studies have been published. It was eye-opening for me as a psychopharmacologist to read this literature,” said co-researcher P. Murali Doraiswamy, M.B.B.S., FRCP, of Duke University.
Although the paper found that positive activity interventions are effective in teaching individuals ways to increase their positive thinking, positive affect and positive behaviors, only two studies specifically tested these activities in individuals with mild depression.
In one of these studies, lasting improvements were found for six months. Effective PAIs used in the study included writing letters of gratitude, counting one’s blessings, practicing optimism, performing acts of kindness, meditating on positive feelings toward others, and using one’s signature strengths, all of which can be easily implemented into a daily routine at low cost.
People often underestimate the long-term impact of practicing brief, positive activities, Lyubomirsky said. For example, if a person gets 15 minutes of positive emotions from counting her blessings, she may muster the energy to attend the art class she’d long considered attending, and, while in class, might meet a friend who becomes a companion and confidant for years to come. In this way, even momentary positive feelings can build long-term social, psychological, intellectual, and physical skills and reserves.
The researchers’ review of brain imaging studies also led them to theorize that PAIs may act to boost the dampened reward/pleasure circuit mechanisms and reverse apathy – a key benefit that does not usually arise from treatment with medication alone.
“The positive activities themselves aren’t really new,” said graduate student Kristin Layous, the paper’s lead author. “After all, humans have been counting their blessings, dreaming optimistically, writing thank you notes, and doing acts of kindness for thousands of years. What’s new is the scientific rigor that researchers have applied to measuring benefits and understanding why they work.”
A major benefit of positive activities is that they are simple to practice and inexpensive to deliver.
While PAIs appear to be a potentially promising therapy for mild forms of depression,” Doraiswamy cautioned, “they have not yet been fully studied in people with moderate to severe forms of depression. We need further studies before they can be applied to help such patients.”
Kim Jobst, a physician and editor-in-chief of the Journal of Alternative and Complimentary Medicine, said the review provides one location in which to reference all relevant PAI findings to date, and includes recommendations that should prove useful to researchers, clinicians and the public. The journal is devoted to publishing research about novel and unconventional treatment approaches.