When managaing high cholesterol, it is important to maintain a health diet that is low in saturated fat, trans fat, and cholesterol. Foods that are high in these nutrients can increase cholseterol levels. It is important to incorporate soluble fiber, plant stanols, and sterols in the diet as these nutrients prevent the digestive tract from absorbing cholesterol. Plant stanols and sterols are plant products that are added to a variety of foods and are also available as a supplement. Some great examples of foods that contain soluble fiber are oatmeal, fruits, and legumes.
Reference:
NHLBI: https://www.nhlbi.nih.gov/files/docs/public/heart/chol_tlc.pdf
Medline Plus: https://medlineplus.gov/howtolowercholesterolwithdiet.html
Harvard: https://www.health.harvard.edu/heart-health/11-foods-that-lower-cholesterol