Trans fats and cis fats are types of unsaturated fats that differ in the way their hydrogen atoms are arranged around the carbon–carbon double bond.
Here’s a explanation:
1. Cis Fats
- The hydrogen atoms are on the same side of the double bond.
- This makes the fat molecule bent or kinked, so the molecules cannot pack closely together.
- State: Usually liquid at room temperature (like oils).
- Sources: Natural vegetable oils, nuts, fish.
- Effect: Considered healthy, help lower bad cholesterol (LDL) and raise good cholesterol (HDL).
2. Trans Fats
- The hydrogen atoms are on opposite sides of the double bond.
- This makes the molecule straight, allowing it to pack tightly like saturated fats.
- State: Usually solid at room temperature.
- Sources: Processed foods, fried snacks, margarine, and bakery items (from hydrogenated oils).
- Effect: Unhealthy, increase bad cholesterol (LDL) and lower good cholesterol (HDL), leading to heart disease.