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The Effect of 12-Week Garlic Supplementation on Symptom Relief in Overweight or Obese Women With Knee Osteoarthritis Publisher Pubmed



Salimzadeh A1 ; Alipoor E2 ; Dehghani S3 ; Yaseri M4 ; Hosseini M4 ; Feinlebisset C5, 6 ; Hosseinzadehattar MJ2, 3, 5, 6
Authors
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Authors Affiliations
  1. 1. Rheumatology Research Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Nutrition and Biochemistry, School of Public Health, International Campus, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia
  6. 6. Adelaide Medical School, University of Adelaide, Adelaide, Australia

Source: International Journal of Clinical Practice Published:2018


Abstract

Aims: Chronic joint pain and stiffness, and functional disability, are the major debilitating features of osteoarthritis (OA). The aim of this study was to assess the effect of 12-week supplementation with a garlic supplement on knee osteoarthritis outcomes in overweight or obese women. Methods: Seventy-six postmenopausal overweight or obese women (25≤BMI≤40 kg/m2) with medically diagnosed knee OA participated in this randomised double-blind, placebo-controlled, parallel-design trial. After randomisation into 2 groups, patients received a daily dose of either 1000 mg odourless garlic tablet, or placebo, for 12 weeks. The total Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), as well as pain, stiffness and physical function subscales, were evaluated pre- and poststudy. Anthropometric parameters and body composition (using bioelectrical impedance analysis) were also assessed. Results: Following 12-week supplementation in overweight or obese women with OA, stiffness (but not pain, function or WOMAC total score) was significantly lower in the garlic group compared with the placebo group (1.4 ± 1.6 vs 2.5 ± 1.9, P =.023). The changes in WOMAC parameters showed no statistically significant differences between the 2 groups. WOMAC total score (38.4 ± 15.9-30.6 ± 15.7, P =.004) and all the subscales, including pain (8.3 ± 3.7-7 ± 4.4, P =.026), stiffness (2.3 ± 1.6-1.4 ± 1.6, P =.013) and physical function (27.7 ± 11.9-22.2 ± 12.4, P =.001) improved significantly in the garlic group postintervention compared with pre-intervention; although pain subscale also decreased in the placebo group (9.6 ± 3.1-6.9 ± 3.7, P <.001). Conclusions: Although pre- to postintervention knee OA symptoms were improved in overweight or obese women receiving 12 weeks garlic supplement, there was no significant difference in WOMAC changes compared with the placebo group. Further clinical trials are required to investigate the therapeutic value of garlic ingredients, and the potential role of placebo effect, in the management of OA symptoms. © 2018 John Wiley & Sons Ltd
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