Varieties of soybeans are used for many purposes.

There are a number of foods that can reduce levels of Low-Density Lipoproptein (LDL), aka bad cholesterol that causes plaque in blood vessels, and increase High-Density Lipoprotein (HDL) aka good cholesterol that can be utilized the body to process vitamins are soluble in fat.
To reduce levels of LDL, you should reduce your intake of saturated fat. Saturated fats are commonly found in animal products such as meat, milk, cream, butter, and cheese. There is also a saturated fat derived from vegetable such as coconut milk, coconut oil, and vegetable fat.
But many foods that contain unsaturated fats, so it is effectively lower cholesterol.

Soybeans and derivatives, aka soy that has been processed for example into tofu, soy milk, and soy flour contains isoflavones, a substance that can reduce LDL.
But remember, though delicious tofu and tempeh can not effectively lower cholesterol when treated carelessly. For example, fried or used cooking oil mixed with coconut milk. Because, coconut milk and cooking oil is a source of saturated fat.
Supervisory Agency United States Food and Drug Administration (FDA) recommends to consume at least 25 grams of soy protein per day to lower cholesterol.

Nuts are a source of soluble fiber are very high. Consuming soluble fiber can reduce cholesterol. Eating beans such as chickpeas, kidney beans, long beans regularly during the six weeks can reduce cholesterol levels by 10%.