Adult coloring and anxiety: what the research says
Coloring books for adults are often sold as stress relief. The research is more modest than the marketing, and it helps to know what it does and does not show. This article summarizes four published studies, links to each, and marks where the evidence is weak. It is not medical advice.
What the research shows
In a 2005 experiment published in Art Therapy, Nancy Curry and Tim Kasser made 84 undergraduate students briefly anxious, then randomly assigned them to color a mandala, color a plaid pattern, or color on a blank sheet of paper for 20 minutes. Anxiety fell by about the same amount in the mandala and plaid groups, and both fell more than in the blank-sheet group. The authors suggested that coloring a reasonably complex geometric pattern may bring on a meditative state.
Mandalas are not clearly better than free drawing
A 2022 systematic review and meta-analysis in Art Therapy, by Siri Jakobsson Støre and Niklas Jakobsson, pooled eight studies with 578 adults and compared mandala coloring with free drawing. Mandala coloring did not reduce state anxiety significantly more than free drawing. The studies with less precise results also showed larger effects, which points to some bias toward finding an effect, and the authors concluded that more high-quality studies are needed. So the popular claim that mandalas beat everything else is not supported.
Older adults
A 2020 randomized trial in Taiwan, by Malcolm Koo, Hsuan-Pin Chen and Yueh-Chiao Yeh, assigned 120 community-dwelling adults aged 55 to 75 to 20 minutes of mandala coloring, plaid-pattern coloring, free-form drawing or reading. Only the mandala coloring group had significantly lower anxiety afterwards than the reading group. Together with the 2005 study, this shows that results differ from one study to the next.
Hospital patients
A 2026 meta-analysis in BMC Complementary Medicine and Therapies pooled 17 studies with 987 adult hospital patients. Mandala coloring was linked to lower anxiety and stress, and short sessions of 30 minutes or less, repeated over several sessions, worked especially well for anxiety. The authors rated the certainty of the evidence as low, so the result is promising but not firm.
How long to color
The two experiments above gave participants 20 minutes, and the 2026 hospital review found that sessions of 30 minutes or less, repeated, worked especially well. None of these studies identifies an ideal length. Twenty to thirty minutes is a reasonable starting point, and stopping when it stops feeling calming is fine.
What the evidence cannot tell us
The studies above mostly measure anxiety right after a session, in small groups, with different comparison activities. They cannot show long-term benefit, and they do not compare coloring with established treatments or with meditation. Coloring is a low-cost, low-risk way to spend 20 minutes calmly, which is a fair reason to do it, but these studies do not show that it treats an anxiety disorder.
Practical tips
Choose a quiet space without screens or notifications. Use supplies that feel good to use, because pencils that keep breaking add frustration. Pick a design you enjoy. The studies give mixed answers on whether the pattern matters, so there is no need to force a mandala if you prefer flowers or animals. Do not aim for a perfect result.
Generate your own designs
With the generator on this site you can ask for the style you prefer: botanical mandalas, geometric patterns, animal mandalas, fantasy scenes. Try prompts like "intricate floral mandala with hidden butterflies" or "geometric mandala based on celtic knots."
When to seek professional help
Coloring is a useful tool for managing everyday stress, but it is not a substitute for treatment of clinical mental health conditions. If anxiety or depression is significantly affecting your daily life, work, or relationships, the most evidence-supported step is to consult a licensed mental health professional. Coloring can be one part of a broader self-care toolkit, not a replacement for therapy or medication when those are needed.