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Anti-stress effects of DHA
T Hamazaki1, M Itomura, S Sawazaki
1Department of Clinical Application, Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, Japan. hamazaki@ms.toyama-mpu.ac.jp
Biofactors (Oxford, England)
|March 10, 2001
Summary
Docosahexaenoic acid (DHA) intake may reduce hostility and stress. Studies show DHA supplements lowered hostility and norepinephrine levels in students during exam periods.
Area of Science:
- Neuroscience
- Nutritional Science
- Psychology
Background:
- Docosahexaenoic acid (DHA) is a key omega-3 fatty acid abundant in the brain.
- DHA deficiency has been linked to behavioral changes in animal models.
- Understanding DHA's impact on human psychological responses is crucial, especially under stress.
Purpose of the Study:
- To investigate the effects of DHA intake on hostility levels.
- To examine the influence of DHA on plasma catecholamine concentrations.
- To clarify the role of DHA in mitigating psychological stress responses.
Main Methods:
- Two double-blind studies were conducted with university students.
- Study 1: 41 students consumed DHA-rich or control oil for 3 months during academic stress.
- Study 2: Assessed plasma catecholamines and cortisol in students under continuous exam stress over 2 months.
Main Results:
- Hostility significantly increased in the control group but remained stable in the DHA group.
- Plasma norepinephrine levels decreased significantly in the DHA group, unlike the control group.
- Plasma cortisol levels showed no significant changes in either group.
Conclusions:
- DHA supplementation may help reduce hostility and modulate stress responses.
- DHA intake could be beneficial for individuals experiencing psychological stress.
- Further research can explore DHA's therapeutic potential in stress-related conditions.