Raw garlic and garlic supplements have failed to significantly cut cholesterol in a six-month trial.
Garlic supplements are promoted as cholesterol lowering agents. However, previous clinical trials have shown their effectiveness to be inconsistent.
US researchers tested the three forms of garlic on 192 adults aged 30-65 who had moderately high low-density lipoprotein levels.
Scientists concluded 'There were no statistically significant effects of the forms of garlic on LDL cholesterol concentrations.' Levels of High density LDL, triglycerides and total cholesterol ratio also stayed the same.
But they said garlic may have the desired effect on specific subpopulations and may still have some usefulness in the prevention of heart disease.
Archives Internal Medicine. 2007;167:325-326.