What are unsaturated fats?



Unsaturated fats are a type of dietary fat with chemical structures containing one or more double bonds between carbon atoms. This makes them liquid at room temperature.


  • There are two main types of unsaturated fats:
    • Monounsaturated (one double bond) – Found in foods like olive oil, avocados, nuts
    • Polyunsaturated (multiple double bonds) – Found in foods like fatty fish, seeds, vegetable oils
  • Unsaturated fats are considered healthier than saturated fats and beneficial in moderation. They help regulate cholesterol levels and lower heart disease risk.


  • Olive oil
  • Salmon
  • Almonds
  • Sunflower seeds
  • Peanut butter

Related Terms

Common Questions

  • What foods contain unsaturated fats?
  • Are unsaturated fats good or bad for you?
  • What are the health benefits of unsaturated fats?

Do Not Confuse With

  • Saturated fats – Contain only single bonds, solid at room temperature
  • Trans fats – Unsaturated fats chemically processed into saturated fats
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