Forgiveness is an important theological construct that impinges directly upon our ability to relate to others. Some research associates higher forgiveness with better mental health but little data exists which relates biological factors to forgiveness. This study correlated forgiveness scale scores of 68 community adults with a variety of immunological, psychophysiological and other physiological factors. Blood samples and physiological measurements were taken after a 30-minute rest period. In addition, participants completed a series of standardized assessments of anger, anxiety, depression, social desirability and coping styles. Higher levels of forgiveness correlated with better health habits, lower anxiety, lower anger, lower depression, and more task coping. In addition, people with higher levels of forgiveness had lower hematocrit levels, lower white blood cell counts, and higher TxPA levels. Lower forgiveness levels were correlated with higher T-helper/cytotoxic cell ratios. In general, results supported the hypothesis that forgiveness is positively associated with indices of good health. (PsycINFO Database Record (c) 2012 APA, all rights reserved)