45 peer-reviewed studies · Evidence score: 9/10
Lagou V et al. • European journal of preventive cardiology (2025)
Flavan-3-ol-rich foods considerably reduce elevated BP and improve endothelial function independent of blood pressure supporting their use for cardiovascular prevention.
Asbaghi O et al. • The British journal of nutrition (2024)
Moreover, GTE as a nutraceutical dietary supplement can increase TAC and adiponectin.
He B et al. • Current pharmaceutical design (2024)
This study demonstrated that long-term EGCG can prevent CRC recurrence to a certain extent.
Osadnik T et al. • Pharmacological research (2022)
Evidence for bergamot effect was based on relatively small study group and may require further investigations.
Rawangkan A et al. • Molecules (Basel, Switzerland) (2021)
To confirm the findings before implementation, longitudinal clinical trials with specific doses of green tea consumption are warranted.
Nguyen PY et al. • BJOG : an international journal of obstetrics and gynaecology (2025)
ECGC and resveratrol supplements have been investigated for potential effects in managing clinical signs and symptoms of preeclampsia; however, evidence on the clinical and adverse effects of polyphenols is limited and uncertain.
Filippini T et al. • The Cochrane database of systematic reviews (2020)
Overall, findings from experimental and nonexperimental epidemiological studies yielded inconsistent results, thus providing limited evidence for the beneficial effect of green tea consumption on the overall risk of cancer or on specific cancer sites.
Xu R et al. • Critical Reviews in Food Science and Nutrition (2020)
Green tea catechins significantly reduced LDL cholesterol, total cholesterol, and blood pressure in randomized controlled trials.
Wang X et al. • Journal of human nutrition and dietetics : the official journal of the British Dietetic Association (2014)
The consumption of green tea did not decrease the levels of fasting plasma glucose, fasting serum insulin, OGTT-2 h glucose, haemoglobin A₁c and HOMA(IR) in populations at risk of T2DM.
Zhang Y et al. • The American journal of Chinese medicine (2025)
However, given the heterogeneity of the included studies, our findings still need to be validated by conducting higher-quality studies.
Bereczki E et al. • The journal of prevention of Alzheimer's disease (2025)
Findings suggest that well-designed interventions - tailored to the right individuals, implemented at the optimal time - may effectively improve cognition.
Zhang Y et al. • Phytomedicine : international journal of phytotherapy and phytopharmacology (2025)
The efficacy of EGCG in treating NAFLD has been predicted within a time frame of 10-15 weeks.
Wiese F et al. • International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition (2023)
Due to limitations, further studies with higher methodological quality and larger sample sizes are needed.
Colonetti L et al. • Nutrition research (New York, N.Y.) (2022)
We found a significantly lower body weight (kg) for green tea group (mean difference, -2.80; 95% confidence interval, -5.25 to -0.35; P = .03; I² = 0%; 4 studies, 169 participants, very low-quality...
Ranneh Y et al. • Nutrients (2024)
Still, the inconsistent results across the included RCTs require further clinical research to establish optimal dosage and duration.
Yıldırım Ayaz E et al. • Alternative therapies in health and medicine (2023)
In healthy individuals, green tea supplementation reduced systolic blood pressure by 2.99 mmHg and diastolic blood pressure by 0.95 mmHg.
Macêdo APA et al. • Nutrition and health (2022)
In human studies, green tea has not been shown to be effective in controlling obese lipids.
Hung SW et al. • Medicinal research reviews (2021)
Medicinal Research Reviews
Fritz H et al. • Integrative cancer therapies (2013)
Although some evidence suggests that chemopreventative benefits can be accrued from green tea, there is currently insufficient evidence to support green tea as a treatment or preventative agent for lung cancer.
Asbaghi O et al. • Diabetes & metabolic syndrome (2020)
In conclusion, present systematic review and meta-analysis revealed that the supplementary intake of GTE may improve lipid profile by reducing serum concentrations of TG in patients with T2DM.