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Cortisol secretion patterns in addiction and addiction risk.
1Behavioral Sciences Laboratories (151A), Veterans Affairs Medical Center, 921 NE 13th Street, Oklahoma City, Oklahoma 73104, United States. bill@mindbody1.org
Summary
The hypothalamic-pituitary-adrenocortical (HPA) axis is linked to addiction vulnerability. Dysregulation and deficient cortisol reactivity in the HPA axis may explain motivational changes in alcohol and nicotine addiction.
Area of Science:
- Neuroscience
- Psychiatry
- Endocrinology
Background:
- Addiction involves altered brain motivational systems.
- The hypothalamic-pituitary-adrenocortical (HPA) axis may explain motivational changes in addiction.
- Alcohol and nicotine interact with HPA functioning.
Purpose of the Study:
- To explore the role of HPA axis functioning in addiction.
- To understand how alcohol and nicotine affect HPA axis regulation.
- To investigate the link between HPA axis reactivity and addiction risk.
Main Methods:
- Review of existing research on HPA axis function in addiction.
- Analysis of cortisol responses to acute and chronic alcohol/nicotine intake.
- Examination of HPA axis regulation by limbic and prefrontal systems.
Main Results:
- Acute alcohol and nicotine intake induce cortisol responses.
- Persistent use may lead to HPA axis dysregulation.
- Deficient cortisol reactivity is associated with dependence and relapse risk.
Conclusions:
- HPA axis function is crucial for understanding addiction.
- Frontal-limbic interactions with the HPA axis may underlie addiction vulnerability.
- Further research on HPA axis, stress, and addiction is warranted.