When you hear the word cholesterol , what comes to mind? For most people, it’s something bad for the heart. We often hear phrases like “avoid cholesterol,” “cholesterol causes heart attack,” or “low cholesterol foods are healthier.” But here’s a surprising truth — having zero cholesterol can actually be harmful to your body. Too much cholesterol is dangerous, but too little is equally risky. Your body needs cholesterol to function properly — it’s not the villain it’s often made out to be. What Exactly Is Cholesterol? Cholesterol is a waxy, fat-like substance that’s naturally produced by your liver. It’s found in every cell of your body and plays several vital roles: Builds cell membranes and maintains flexibility. Supports brain and nerve health — about 25% of the body’s cholesterol is found in the brain. Produces essential hormones such as testosterone, estrogen, progesterone, and cortisol. Helps synthesize Vitamin D, which is necessary for bone strength and immune healt...