Reusing frying oil: A recipe for health hazards
Frying is one of the most popular methods of preparing food, but it is also one of the most problematic for health. The key question is: can you use the same oil multiple times? Many people, aiming to save money, decide to reuse it, but few realize the consequences of this choice.
At first glance, reusing oil might seem like a harmless practice—it's just fat that has been heated. Unfortunately, during frying, oil undergoes complex chemical changes that alter its composition and properties. Harmful substances can form, which may negatively impact our health, especially when the oil has been previously heated to high temperatures.
Why is multiple frying with the same oil dangerous?
During frying, oil undergoes oxidation, producing toxic compounds like acrolein and free radicals. These substances can be carcinogenic and lead to serious chronic diseases, such as atherosclerosis or hypertension. The more times you use the same oil, the more harmful it becomes, and the foods fried in it absorb these unhealthy compounds.
Additionally, repeatedly heated oil changes its properties—it can smoke at a lower temperature, making frying less effective and less tasty. Oil saturated with burnt residue can also negatively affect the flavour of the food.
How to maintain health while frying?
The most important thing is to use the right type of fat. Oils with a high smoke point, such as refined canola oil, coconut oil, or lard, are less prone to harmful chemical changes. However, if you choose to fry, remember to discard the oil after one use. A good idea is also to use the oven or a grill pan, which eliminate the need for deep frying.
Why is it important to pay attention to the quality of oil?
Selecting the right oil is key to healthy frying. Cold-pressed oils, although healthier in their raw form, are not suitable for high temperatures. Conversely, refined oils, though processed, perform better during frying. If you want to take care of your health, adhere to the guidelines that minimize the risks associated with using oil in the kitchen.
