Don’t use oil more than once

PETALING JAYA: Repeatedly used cooking oil can cause hypertension, affect the liver and may in the long run lead to cancer, the National Poison Centre has warned.

Centre consultant Dr T. Jayabalan said cooking oil should not be used even twice.

“When used repeatedly, the concentration of hydrocarbons in the oil increases and these can clog and stiffen arteries, causing hypertension and also affect the liver,” he said in a phone interview.

“Many people do not discard the oil after using it once. They put it in a container to be used again before they finally dispose of it,” Dr Jayabalan said.

“No level of contamination should be allowed. There is no basis for a permissible level of recyling for oil meant for human consumption.”