A recent study in mice showed that reheated cooking oil might trigger cell changes that can promote late-stage breast cancer growth.

Researchers from the University of Illinois at Urbana-Champaign tested “thermally abused frying oil,” which is cooking oil that has undergone reheating to high temperatures multiple times, in laboratory mice and found that it increased metastatic breast cancer growth.


Breast cancer statistics

Breast cancer occurs when cells in the breast grow out of control and form a tumor. If the cells are capable of invading the surrounding tissue or spreading to other areas of the body, doctors deem the disease to be malignant. Breast cancer is not exclusive to women — although it is rare, it can affect men as well.

Breast cancer rates in the United States have increased by 0.4 % a year over recent years.

About one in eight women in the U.S. will develop breast cancer during their lifetime, and the American Cancer Society (ACS) estimate that doctors will diagnose around 268,600 new cases of invasive breast cancer in 2019. 

Why reheated oil may be bad !!

The repeated reheating of cooking oil changes its composition and releases acrolein, which is a toxic and potentially carcinogenic chemical.

Restaurants and other food outlets often reuse soybean oil multiple times before replacing it with fresh oil in the frying vats.

These factors are what led the researchers to investigate whether thermally abused oil could have any effect on breast cancer growth. Although the results are preliminary, they add to a knowledge base that will grow deeper as research in this area continues.



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