There is a growing body of evidence indicating that spiritual practices are associated with better health and wellbeing  for many reasons, including:
Contemplative practices are activities that guide you to direct your attention to a specific focus—often an inward-looking reflection or concentration on a specific sensation or concept. Many spiritual traditions have a long history of using contemplative practices to increase compassion, empathy, and attention, as well as quiet the mind.
Many spiritual traditions encourage participation in a community. Spiritual fellowship, such as attending church or a meditation group, can be sources of social support  which may provide a sense of belonging, security, and community. Strong relationships  have been proven to increase wellbeing and bolster life expectancy, which is perhaps why one study found a strong association between church attendance and improved health, mood, and wellbeing.
Dr. Steven Southwick’s book, Resilience: The Science of Mastering Life’s Greatest Challenges, describes how some people overcome trauma—such as abduction, war, and imprisonment—by seeking comfort in spirituality or religion. He gives examples where spiritual people find ways to “meet the challenge and continue with purposeful lives…they bounce back and carry on.”
Having a strong spiritual outlook may help you find meaning in life’s difficult circumstances. Southwick describes the story of a woman who overcame the post-traumatic stress following an abduction and rape by believing that her trauma “served as a platform for her personal development, forcing her to evaluate her life and gradually change it for the better. She credits her ability to move forward with her life…to her dedication to spirituality.”
The spiritual practice of recognizing the interconnectedness of all life can also help buffer the pain that comes with difficult experiences. Researcher Kristin Neff says that “if we can compassionately remind ourselves in moments of falling down that failure is part of the shared human experience, then that moment becomes one of togetherness rather than isolation. When our troubled, painful experiences are framed by the recognition that countless others have undergone similar hardships, the blow is softened.”
Adhering to a particular spiritual tradition may bring an indirect health benefit because many traditions have rules about treating the body with kindness and avoiding unhealthy behaviors. Research shows that perhaps because of these tenets, people who practice a religion or faith tradition are less likely to smoke or drink, commit a crime, or become involved in violent activity, and they are more likely to engage in preventative habits  like wearing seatbelts and taking vitamins.
An exhaustive review that compared spirituality and religiousness to other health interventions found that people with a strong spiritual life had an 18% reduction in mortality. Giancarlo Lucchetti, lead author of the study, calculates that the life-lengthening benefits of spirituality can be compared to eating a high amount of fruits and vegetables or taking blood pressure medication. Although some researchers have suggested that the extent of spirituality’s benefit on health is exaggerated, most researchers agree there is a positive relationship between religious and spiritual practices and better health outcomes.
Letting go of blame and negative feelings after a hurtful incident is a practice that is reflected by a number of spiritual traditions, including Christianity, Islam, Buddhism, and Judaism. Modern science shows the health benefits of forgiveness are numerous: better immune function, longer lifespan, lowered blood pressure, improved cardiovascular health, and fewer feelings of anger or hurt.