Curcumin is a bioactive compound found in turmeric, a spice commonly used in curry. Research published in Brain Research (2006;1122(1):56–64) examined whether curcumin could influence the physiological and neurological effects of chronic stress in an animal model.
In this study, rats were exposed to 20 days of chronic stress, which led to measurable changes in behavior, physiology, and task performance. Stressed animals also showed several biochemical and structural alterations, including elevated corticosterone levels, changes in the ratio of phosphorylated cAMP response element–binding protein (pCREB) to CREB in the brain, reduced mRNA expression, downregulation of brain-derived neurotrophic factor (BDNF) protein levels, and increased thickness of the adrenal cortex.
When curcumin was administered at a dose of 10 mg per kilogram of body weight, these stress-related changes were largely prevented. In contrast, a lower dose of curcumin (2.5 mg/kg body weight) did not produce the same protective effects.
These findings suggest that curcumin may influence stress-related neurobiological pathways under experimental conditions. While limited to an animal model, the study highlights potential mechanisms through which curcumin could modulate stress responses, warranting further investigation in human studies.
