Here's why:
* Fats are hydrophobic: They don't mix with water, which is the primary medium in our digestive system.
* Emulsifiers break down fat globules: Emulsifiers like bile (produced by the liver) have both hydrophobic and hydrophilic parts. They surround fat droplets, creating smaller, more manageable globules that can mix with water and be accessed by digestive enzymes.
* Digestion of fat: Once emulsified, the fat droplets are broken down by lipase enzymes, which can then properly digest them.
Without emulsifiers, fats would clump together, making them difficult to digest and absorb.