Garlic (Allium sativum L.)
- GlucoseGlucose: The available evidence suggests that garlic does not significantly lower blood glucose levels in humans. Although animal study has reported that garlic may decrease glucose concentrations and increase insulin secretion (107; 108), multiple human trials have failed to demonstrate significant effects of oral garlic preparations on measures of glycemic control in diabetic or nondiabetic patients (113; 171; 105; 122; 123; 124; 246; 128; 130; 245), with the exception of one poor-quality study that noted a small significant reduction in mean blood glucose levels in patients treated with 800mg of daily dehydrated garlic (Kwai®), from 89mg/dL to 79mg/dL over four weeks (127).
- LipidsLipids: Multiple trials have demonstrated modest lipid-lowering properties of oral garlic supplementation, including decreases in total cholesterol and low-density lipoprotein (2; 3; 5; 6; 4).
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