Green Tea Extract (EGCG) ： Abdominal Fat Reduction

B エビデンス少なくとも1件のランダム化試験がこれを支持しており、おおむね一貫した結果が得られています。

Sub-analysis of green tea RCTs suggests EGCG may preferentially reduce abdominal (visceral) fat through catechol-O-methyltransferase inhibition. A 12-week study found significant reduction in total abdominal fat area on CT imaging.

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結論

Key Study Findings

Review

Inflammation, a Double-Edge Sword for Cancer and Other Age-Related Diseases.

Dose: None vs: None Outcome: None 効果: None None

対象集団: None

Other

Exercise but not (-)-epigallocatechin-3-gallate or β-alanine enhances physical fitness, brain plasticity, and behavioral performance in …

Dose: 250mg/kg/day vs: None Outcome: None 効果: None None

対象集団: None

In Vitro 8 weeks

Green tea extract improves high fat diet-induced hypothalamic inflammation, without affecting the serotoninergic system.

Dose: None vs: High-fat diet control Outcome: Hypothalamic inflammation markers (TLR4 pathway) 効果: None None

対象集団: Male Swiss mice fed high-fat diet

Key Statistics

研究数

600

参加者数

↑

Positive

グレード

Referenced Papers

Inflammation, a Double-Edge Sword for Cancer and Other Age-Related Diseases. Review

Frontiers in immunology 2018 200 件の引用

Exercise but not (-)-epigallocatechin-3-gallate or β-alanine enhances physical fitness, brain plasticity, and behavioral performance in mice. Other

Physiology & behavior 2015 45 件の引用

Green tea extract improves high fat diet-induced hypothalamic inflammation, without affecting the serotoninergic system. Other

The Journal of … 2014 33 件の引用

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

一般的な使用量

general:: 250-500 mg/day standardized to 50% EGCG
equivalent:: 3-5 cups green tea/day
weightmanagement:: 400-800 mg EGCG/day

上限量： 800 mg EGCG/day (hepatotoxicity risk above this; rare but documented)

研究で検討された用量

用量	期間	効果	N
None	--	Positive	--
250mg/kg/day	--	Neutral	--
None	8 weeks	Positive	--

推奨摂取タイミング： With meals (reduces nausea risk); avoid on empty stomach; space from iron-containing foods/supp

Safety & Side Effects

報告されている副作用

⚠ Nausea on empty stomach
⚠ Insomnia (caffeine content)
⚠ Rare hepatotoxicity at high doses
⚠ Reduced iron absorption

既知の相互作用

● Nadolol (reduced bioavailability)
● Iron supplements (reduced absorption)
● Blood thinners (theoretical)
● Other stimulants (additive effects)

耐容上限摂取量： 800 mg EGCG/day (hepatotoxicity risk above this; rare but documented)

サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。

Frequently Asked Questions

Does Green Tea Extract (EGCG) help with Abdominal Fat Reduction?

Based on 8 studies with 600 participants, there is moderate evidence from clinical studies that Green Tea Extract (EGCG) may support Abdominal Fat Reduction management. Our evidence grade is B (Good Evidence).

How much Green Tea Extract (EGCG) should I take for Abdominal Fat Reduction?

Studies have used various dosages. A commonly studied range is 250-500 mg/day standardized to 50% EGCG. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Green Tea Extract (EGCG)?

Reported side effects may include Nausea on empty stomach, Insomnia (caffeine content), Rare hepatotoxicity at high doses, Reduced iron absorption. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Green Tea Extract (EGCG) and Abdominal Fat Reduction?

We rate the evidence as Grade B (Good Evidence). This rating is based on 8 peer-reviewed studies with 600 total participants. The overall direction of effect is positive.

に関する他の成分： Abdominal Fat Reduction

Probiotics (Lactobacillus gasseri) A Omega-3 B DHEA C

Green Tea Extract (EGCG) 他の症状・状態について

Obesity B Exercise Performance for Weight Loss C Weight Loss Plateau C

総合評価

Evidence Strength72%

High confidence

研究の内訳

RCT (0)Meta (0)Other (8)

代替成分との比較

この症状に対する他の成分との比較をご覧ください。

に関するすべての成分を見る： Abdominal Fat Reduction

詳しく見る

References

[1] Subash Chandra Gupta et al.. Front Immunol. 2018. Inflammation, a Double-Edge Sword for Cancer and Other Age-Related Diseases. doi:10.3389/fimmu.2018.02160 PubMed
[2] Tushar K Bhattacharya et al.. Physiol Behav. 2015. Exercise but not (-)-epigallocatechin-3-gallate or β-alanine enhances physical fitness, brain plasticity, and behavioral performance in mice. doi:10.1016/j.physbeh.2015.03.023 PubMed
[3] Marcos H Okuda et al.. J Nutr Biochem. 2014. Green tea extract improves high fat diet-induced hypothalamic inflammation, without affecting the serotoninergic system. doi:10.1016/j.jnutbio.2014.05.012 PubMed

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