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Study on the Function of Taiwan Green Propolis in Reducing Blood Lipids and Body Fat in Sub-healthy Groups: MASLD
Sponsor: Kuo,HSIN-YU
Summary
This study investigates the effectiveness of Taiwanese green propolis in reducing blood lipids and body fat in sub-healthy individuals. The study design follows a parallel, double-blind, randomized assignment approach, dividing participants into an experimental group (propolis) and a control group (placebo). Researchers explained the study plan to participants, and after obtaining signed informed consent, participants were randomly assigned using a web-based program that generated random serial numbers. The randomization was stratified by gender (male-to-female ratio of 1:1) and physiological age groups (maturity, middle age, menopause, post-menopause, and old age). Serial numbers and group assignments were sequentially encoded and placed in opaque, consecutively numbered envelopes. After obtaining consent, researchers opened the sealed envelopes in order and assigned participants to either the experimental group (propolis) or the control group (placebo), with 30 participants in each group. The experimental group received Taiwanese green propolis (which can be stored at room temperature) in capsule form, containing 500 mg/ml of propolis extract per capsule. Participants took two capsules before breakfast and two before dinner, totaling four capsules per day for 12 weeks. The control group received a placebo with the same dosage and administration method. All participants were instructed not to deliberately change their daily diet or exercise routines during the study. To assess adherence, participants recorded their daily propolis capsule intake. Additionally, the Health Belief Model questionnaire and the EQ-5D-5L quality of life questionnaire were used to evaluate whether the intervention with propolis, along with dietary and exercise education, contributed to increased awareness of health behaviors and improvements in quality of life. The primary outcomes of the study include changes in blood lipids, body fat, blood glucose levels, liver fat, and liver fibrosis. The secondary outcomes focus on the correlation between health behavior awareness and quality of life. Keywords: Taiwanese green propolis, sub-health, blood lipids, body fat, Health Belief Model, quality of life.
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
60
Start Date
2025-08-30
Completion Date
2028-09-30
Last Updated
2025-08-11
Healthy Volunteers
Yes
Interventions
Taiwanese green propolis
Intervention Details: Experimental Group: Take two capsules of Taiwan Green Propolis (each containing 500 mg/mL of propolis) before breakfast and dinner daily, totaling four capsules/day for 12 consecutive weeks. During the intervention period, both groups will maintain their usual diet and activity levels and receive the same health education on nutrition and exercise.
placebo
Take placebo capsules identical in appearance, smell, and content, with the same dosage and frequency.
Locations (1)
Buddhist Tzu Chi Medical Foundation Dalin Tzu Chi Hospital
Chiayi City, Dalin, Taiwan