Onion supplementation may reduce body fat and improve metabolic health in overweight people

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The Health Benefits of Onions

Scientists from Yonsei University in Korea have conducted a study suggesting that onions may have a positive impact on body fat reduction and metabolic health in overweight individuals.

Onions, belonging to the lily family, are known to contain potent compounds that offer numerous health benefits.

Antioxidant Properties and Disease Prevention

Onions are rich in antioxidant compounds that have been associated with protecting against chronic diseases, including cancer and diabetes.

Regular and sufficient onion consumption has been shown to offer these protective benefits.

Supporting Heart Health and Beyond

The consumption of onions may contribute to heart health by helping to lower blood pressure and cholesterol levels.

Additionally, onions may promote bone and gut health, as well as possess antibacterial properties.

Onion Supplementation Study Design

In the study, researchers investigated the effects of Jeju steamed onion supplementation on body fat and metabolic health in overweight individuals.

The onions were steamed and dried to create onion powder, reducing their spiciness and smell.

Study Findings

The study involved 70 participants who were divided into a placebo group and a test group. Over a 12-week period, the participants consumed either a placebo or an onion capsule before each meal.

The researchers measured various metabolic parameters and conducted body composition analysis before and after the 12-week intervention.

The findings revealed that compared to the control group, onion supplementation significantly reduced body fat percentage and fat mass without affecting lean body mass.

CT analysis demonstrated a substantial decrease in whole fat, visceral fat, and subcutaneous fat.

Furthermore, the study showed that the levels of triglycerides and C-peptide were significantly lower in the onion supplementation group after the 12-week intervention.

Implications and Limitations

The results suggest that onion supplementation may help reduce total body fat, specifically abdominal visceral fat, and improve metabolic health in overweight individuals.

However, it is important to note some limitations of the study, such as the use of onion powder supplements instead of whole onions and the relatively low dosage of the supplement.


In conclusion, the study conducted by Sarang Jeong et al. at Yonsei University suggests that onion supplementation may have positive effects on body fat reduction and metabolic health in overweight individuals.

Onions’ antioxidant properties and potential health benefits make them a worthwhile addition to a balanced diet.

Please note that the information provided in this summary is based on the study published in the Journal of the American Nutrition Association and should not replace professional medical advice.

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