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What is cholesterol and why do we need it? What is the difference between good and bad cholesterol? Do eggs negatively affect cholesterol levels?   “Cholesterol in the body is used to build cell membrane stability. It's also used to build hormones that we need - testosterone and estrogen, and Vitamin D that is very important too.”   Dr. James Wudel, MD is a cardiothoracic surgeon in Lincoln, NE. Dr. Wudel completed a residency at Vanderbilt University Hospital. He currently practices at Nebraska Heart Institute and is affiliated with Bryan East Campus. Dr. Wudel is board certified in Thoracic Cardiovascular Surgery.    Tune in to listen to Dr. Wudel explain the good, the bad, and the ugly when it comes to cholesterol and our health: 1:48 “Good” cholesterol and “Bad” cholesterol  3:40 Cholesterol in the food doesn't mean cholesterol in the blood 6:00 Cholesterol with different diets and populations 8:00 Egg consumption and cholesterol  18:50 Ketosis  25:40 Things you can do to lower cholesterol or prevent high cholesterol