The Effect of Short-term Green Tea Supplementation on Serum Cortisol and Serotonin Levels in Young Anxious Women

dini, fatemeh; Pourrazi, Hassan

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Volume 12, Issue 4 (Oct-Dec 2025)

Nutr Food Sci Res 2025, 12(4): 33-39

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The Effect of Short-term Green Tea Supplementation on Serum Cortisol and Serotonin Levels in Young Anxious Women

Fatemeh Dini

, Hassan Pourrazi ^*

Associate Professor of Exercise Physiology, Department of Sport Sciences, Faculty of Social Sciences, Imam Khomeini International University, Qazvin, Iran , purrazi.h@gmail.com

Abstract: (357 Views)

Background and Objectives: In recent years, the use of dietary supplements to combat anxiety has increased. Therefore, the present study aimed to assess the effect of short-term green tea supplementation on serum cortisol and serotonin levels in young anxious women.
Materials and Methods: In this randomized clinical trial, 20 young anxious women were randomly assigned to either a control or a green-tea supplementation group. Participants in the supplementation group consumed 1000 mg of green tea daily for one week. Heart rate, systolic blood pressure, rate-pressure product, serum cortisol and serotonin levels were assessed before and after the intervention. Data were analyzed using paired and independent t-tests at a significance level of 0.05.
Results: The findings indicated no significant differences between the control and supplementation groups for changes in heart rate, systolic blood pressure and cortisol levels (P = 0.09, P = 0.15 and P = 0.96, respectively). However, green tea supplementation significantly decreased the rate-pressure product and significantly increased serum serotonin levels
(P = 0.05, P < 0.0001, respectively).
Conclusions: Overall, short-term green tea supplementation seemed to contribute to anxiety management in young anxious women by decreasing the rate-pressure product and increasing serum serotonin levels.

Keywords: Green tea, Cortisol, Serotonin, Anxiety

Full-Text [PDF 623 kb] (147 Downloads)

Article type: Research | Subject: Nutrition
Received: 2025/04/21 | Accepted: 2025/05/12 | Published: 2025/12/1

Short-term daily consumption of 1000 mg of green tea resulted in a significant increase in serum serotonin levels in young anxious women.
Green tea supplementation seemed to contribute to anxiety management in young anxious women by decreasing the rate-pressure product.
Short-term consumption of green tea did not have a significant effect on cortisol levels. However, the downward trend in cortisol concentrations suggests a potential role for green tea in stress modulation.

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dini F, Pourrazi H. The Effect of Short-term Green Tea Supplementation on Serum Cortisol and Serotonin Levels in Young Anxious Women. Nutr Food Sci Res 2025; 12 (4) :33-39
URL: http://nfsr.sbmu.ac.ir/article-1-659-en.html

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