There are two types of dietary fiber: soluble (viscous) and insoluble. To receive the greatest health benefit, eat a wide variety of all high-fiber foods. Refined foods, like white bread, white pasta and enriched cereals are low in fiber. The refining process strips the outer coat (bran) from the grain, which reduces the amount of fiber that's left.
An easy way to make the switch from trans fats is by replacing them with unsaturated fats, which don’t increase your LDL cholesterol, according to WebMD. Unsaturated fats are found in olive oil, canola oil, vegetable and sunflower oils, as well as fish, nuts, seeds and avocados. Just as unsaturated fats are healthy choices, unsaturated fats are not. Be sure to limit your intake of unsaturated fats, which are found in fatty meats, cold cuts, whole milk, whole-milk cheeses and many store-bought baked goods and snacks. Instead, enjoy lean cuts of meat, skim milk, low-fat cheeses and yogurt, and wholesome snacks to trim down your cholesterol levels.
This healthy recipe pairs well with just about anything -- salmon, chicken, or game meat like bison and venison. It's also a superb go-to for quick-fix lunches or snacks. Ladle some into whole-wheat tortillas stuffed with crunchy veggies. Pour a cup or two into some chicken or vegetable stock for an easy soup. Or blend a big scoop of your beans and rice with a big bowl of lettuce greens and sliced tomatoes for a filling lunch salad.
Eating walnuts regularly was linked with a reduced risk of heart disease, according to data from the Nurses' Health Study. Eating as little as one serving of these nuts each week can lower your chances of cardiovascular disease by up to 19%! Consider swapping walnuts for croutons in salads and soups; add ‘em to breakfast cereal or yogurt; or nosh on walnuts with fruit to reap the cholesterol-lowering benefits.
HDL plays an important role in transporting cholesterol from the peripheral tissues to the liver, where it can be excreted; this process is known as reverse cholesterol transport (RCT). (The liver is the main organ for excretion of cholesterol, doing so either directly or by converting cholesterol into bile acids.) It is important to remember that most HDL measured in the blood is derived from the liver and intestine. Therefore, the concentration of HDL in plasma does not reflect cholesterol efflux from blood vessels or the efficiency of RCT. Moreover, HDL function in RCT is not mirrored by HDL measurements. 
Niacin (vitamin B3) is believed to block cholesterol production in the body. Although niacin in prescription supplement form appears to be most effective in increasing HDL, it may have side effects such as flushing, itching, and headache, so you may want to consider adding niacin-containing foods to your diet first. Niacin is found in high concentrations in crimini mushrooms, chicken breast, halibut, tomato, romaine lettuce, enriched bread, and cereals.
Other supplements that have been suggested for cholesterol have less evidence of being useful. In the case of red yeast rice, there is a potential danger because it contains a naturally-occurring form of lovastatin, a prescription drug. Garlic has now been shown to be ineffective for lowering cholesterol. Other supplements and food you may see touted include policosanol, coenzyme Q10, green tea, and soy.
You've probably heard that fried foods of all kinds, hydrogenated oils, and full-fat dairy products are cholesterol bombs that are best avoided (and not just by those watching their cholesterol levels). The American Heart Association recommends that everyone restrict these foods, as they contain trans and saturated fats, the "bad" kind that raises LDL cholesterol and leads to plaque buildup in the arteries.