There are three main types of dietary fat:
Saturated Fats
Unsaturated Fats (Mono-unsaturated & Poly-unsaturated)
Trans Fats
The main difference between these fats is their chemical structure, which determines their physical and chemical properties – this is why unsaturated fats (poly and mono) are liquid at room temperature, and saturated fats are more solid.
The difference in their chemical structure also impacts how they are absorbed and utilized by the body.