Final answer:
Cholesterol does not warm the body but is crucial for cell membrane structure, hormone production, and bile salt formation.
Step-by-step explanation:
Cholesterol has several important functions in the body, but it does not warm the body in the winter. Among its vital roles, cholesterol is a component of cell membranes, providing necessary rigidity and fluidity for cellular processes. It also functions as a precursor for steroid hormones like testosterone, estrogens, and vitamin D, which are essential for various bodily functions. Moreover, cholesterol is involved in the production of bile salts, which aid in the emulsification and digestion of fats.