High cholesterol means you have too much cholesterol, a waxy substance produced by your liver, in your blood. The type to worry about is LDL cholesterol, which is commonly referred to as "bad" cholesterol because it clings to the walls of your arteries. Fortunately, you can achieve a noticeable reduction in your LDL cholesterol by changing your diet.

New research proves the need to consume red onions. The unique effect of the vegetable can reduce heart disease by preserving "good cholesterol" and removing "bad cholesterol" from the body. The "good" type counters the harmful effects of LDL cholesterol by collecting it and transporting it to the liver, where it is flushed out

The scientists found that the onion powder-fed groups experienced a reduction in "bad" cholesterol (low-density lipoprotein, or LDL), while maintaining high levels of "good" cholesterol (high-density lipoprotein, or HDL).

At weeks four and eight, cholesterol levels in the OP-5 group were down 11.2 percent and 20.3 percent compared to the control group.

Although onions have been shown to have various biological activities, such as being an antibiotic and antidiabetic agent, onion chemistry has been the subject of much research.