I know that onions&garlic reduces LDL cholesterol,but does it reduces the HDL cholesterol.
"Effect of Raw Garlic vs Commercial Garlic Supplements on Plasma Lipid Concentrations in Adults With Moderate Hypercholesterolemia-A Randomized Clinical Trial" Arch Intern Med. 2007;167(4):346-353.
"There were no statistically significant effects on high-density lipoprotein cholesterol, triglyceride levels, or total cholesterol–high-density lipoprotein cholesterol ratio."
http://archinte.ama-assn.org/cgi/content/abstract/167/4/346