Milk thistle's gallbladder, spleen and kidney protection are a big deal. Gallstones? If people wanna see 'em they'll have to go to a museum... (thank you Joni Mitchell)

Silybin is the active ingredient in Milk Thistle, and seems to support your liver's clearance of plasma LDL. That's the bad cholesterol (vs HDL - the good one) that can clog your heart's plumbing.

Milk thistle supports your endothelium—that's the inner wallpaper that lines every vein, artery and capillary in your blood's freeway system. A healthy endothelium dilates to keep blood flow raging.