Part 1: Lipids - Role of Lipid in the Body

1). Energy Source and Reserve

Fat is a ideal fuel for cells coz:
a).carries a large quantity of energy per unit weight.
b).transport and stores easily.
c).a ready source of energy. Provides 80% of energy at rest.

2).Protection of Vital Organs and Thermal Insulation

Up to 4% of body fat protects against trauma to vital organs
(heart, liver, spinal cord, spleen etc).

The fat beneath the skin provides insulation, providing protection against extremes of cold. Excess fat hinders body temperature regulation during heat stress during sustained exercise when heat generation could be 20x usual, as it hinders heat dissipation.

3.Vitamin Carrier & Hunger Depressor
Consuming 20g of dietary fat daily is enough to transport and store fat -soluble vitamins A,D, E & K.