Cooking oils

serve as crucial components in numerous dishes, yet

Not all of these are in good condition.

or suitable for regular use. Certain types of oils

may pose risks to your well-being

due to the high

amount of inflammatory fats

, intense refinement procedures or

thermal instability

, which may produce harmful chemicals. Below are the three least desirable cooking oils likely found in your kitchen that you should limit or steer clear from.

1. Soybean oil


Soybean oil

is one of the

most problematic

It is abundant in

omega-6

, a type of

polyunsaturated fat

When taken in large amounts, this can lead to increased inflammation within the body. Furthermore, soybean oil goes through refinement using substances like hexane, which is an industrial solvent. An additional issue is its tendency to oxidize readily at elevated temperatures, producing compounds detrimental to health.

2. Corn oil

Like soybean oil,

corn oil

It is extensively utilized and additionally possesses a

high omega-6 content

. An

disparity between omega-6 and omega-3 levels

dietary choices can help lead to

persistent inflammatory conditions like diabetes and heart ailments

Furthermore, this oil undergoes an extraction method using industrial processes with high temperatures and chemical solvents, which diminishes its nutritional content and promotes the creation of free radicals.

3. Sunflower oil

Many people believe that

sunflower oil

is a healthier choice, yet it surprisingly falls into the same category.

minimum suggested oils for cooking fries

This occurs due to its high content of polyunsaturated fats, which are highly susceptible to heat. Upon heating, sunflower oil generates significant amounts of harmful aldehydes, compounds linked to conditions like Alzheimer’s disease and cancer.

Healthier alternatives

The top choices for cooking oils vary based on their intended usage (such as frying, sautéing, or seasoning) and the health advantages they offer. Below are some of the highly suggested options:


For frying (high temperatures)


  1. Avocado oil

    – Excellent heat tolerance, abundant in beneficial fatty acids.

  2. Coconut oil

    – Remains stable even when exposed to high heat, yet boasts a robust taste.

  3. Extra virgin olive oil

    – Even though it is ideally enjoyed chilled, it can also be utilized for mild cooking.


For stir-frying and moderately cooked dishes


  1. Extra virgin olive oil

    – Packed with antioxidants and beneficial fatty acids.

  2. Sesame oil

    – Strong taste, perfect for dishes from Asia.

  3. Peanut oil

    – Excellent heat tolerance and a mild taste.


For seasoning and chilly consumption


  1. Extra virgin olive oil

    – Ideal for salads and dressings.

  2. Linseed oil

    – High in omega-3, but shouldn’t be cooked.

  3. Walnut oil

    – Refined taste, perfect for salads and chilled recipes.


Sources of information:


  • fpcardiologia.pt
  • scielo.br
  • WHO (World Health Organization)
  • American Heart Association

You might also want to check out:

Why heating this oil can be problematic!

10 astonishing truths about olive oil you were unaware of!

Coconut oil: the misunderstood superfood posing as a secret threat to your well-being

Butter versus Oil: Which Should You Pick for Cooking?

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