Hydrogenated fats, especially those with trans fats, can raise levels of low-density lipoprotein (LDL) cholesterol while lowering high-density lipoprotein (HDL) cholesterol. This imbalance can lead to the buildup of plaque in the arteries, increasing the risk of atherosclerosis, heart attacks, and strokes. Nurses should emphasize the importance of reading food labels to avoid trans fats.