Answer the following question given this paragraph: 

Lipids provide the body with energy and serve other vital functions. One gram of lipids provides 9 Calories of energy. You need to eat small amounts of lipids for good health. However, large amounts can be harmful, especially if they contain saturated fatty acids from animal foods.


Q: What essential molecules can be harmful if ingested in large amounts, especially if they contain saturated fatty acids from animal foods?


A:
lipids