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Effects of Oligonol® Supplementation on Abdominal Fat in Japanese Overweight Volunteers: A Randomized, Double-Blind,
Jun Takanari1, Manami Misu1, Kazunori Goto1
1Amino Up Co., Ltd.
Journal of Nutritional Science and Vitaminology
|August 31, 2025
Summary
Oligonol, a polyphenol from lychee extract, significantly reduced visceral fat in overweight adults. This study suggests Oligonol is a safe and effective option for abdominal fat reduction.
Area of Science:
- Nutrition Science
- Metabolic Health
- Human Physiology
Background:
- Obesity is a major risk factor for chronic diseases like diabetes, hypertension, and dyslipidemia.
- Effective strategies for obesity management are crucial for disease prevention.
- Oligonol, a polyphenol from Litchi chinensis, shows potential for enhanced absorption and body fat reduction.
Purpose of the Study:
- To investigate the effects of Oligonol intake on abdominal fat reduction in overweight Japanese adults.
- To evaluate the efficacy and safety of daily Oligonol supplementation.
Main Methods:
- A randomized, double-blind, placebo-controlled trial.
- 66 overweight adult participants (BMI 25-29.9 kg/m²) received either 200 mg Oligonol or placebo daily for 12 weeks.
- Visceral fat area (VFA) was measured using computed tomography scanning as the primary endpoint.
Main Results:
- Daily intake of 200 mg Oligonol significantly reduced visceral fat area (VFA) compared to the placebo group.
- No clinically significant adverse events were reported with Oligonol consumption.
- Oligonol demonstrated a notable effect on reducing abdominal visceral fat.
Conclusions:
- Oligonol intake effectively reduces abdominal visceral fat in overweight individuals.
- Oligonol is a safe and promising supplement for managing obesity-related fat accumulation.
- Further research may explore long-term effects and broader health benefits.
Keywords:
Litchi chinensislifestyle diseasesmetabolic syndromeobesityoverweightpolyphenolvisceral fat
