Objectives: Swallowing dysfunction is a significant health concern among older individuals, prompting widespread efforts to prevent it. While articulation training using repeated syllables is a common approach, maintaining motivation and habituating to the practice can be challenging, particularly for those facing mental hurdles.

In contrast, the ancient practice of sutra chanting, which has been embraced for centuries, holds potential for improving well-being by offering mental tranquility through the recitation of meaningful Buddhist words, including non-daily vocabulary. While the health benefits of these vocalization techniques remain understudied, they are believed to have positive effects from a geriatric medicine standpoint.

Methods: Our intervention program consisted of 60-minute sessions held at a temple per week for 7 weeks, including homework tasks. Sessions involved group Discussions, preparatory exercises, multiple recitations of the Heart Sutra with loud voices, and talks by a Buddhist priest. This one-arm intervention study targeted older community residents. Pre- and post- assessments, including mental health questionnaires and measurements of swallowing and oral function, were conducted. Paired t-tests were used to compare the data. Post-intervention interviews were conducted by a psychologist and a priest. This study was approved by the Ethics Committee of Taisho University.

Results: Eighteen participants, with an average age of 76.1 ± 8.2 years (8 males, 10 females), showed significant improvements in maximum phonation time, hyoid bone displacement during swallowing, tongue pressure, and mental health. Interview narratives revealed improvements in mental well-being attributed to sutra chanting, including the alleviation of death anxiety and attainment of mindfulness.

Conclusions: The study suggests that the sutra-chanting program, consisting of immersive temple experiences, exposure to Buddhist priest talks, and training in breathing techniques and vocalization through sutra chanting, may contribute to improved mental and physical health.