According to nutritionist Olga Cheremina, a container with sunflower oil should be located in the kitchen in such a way that sunlight does not fall on it.
Many Russians are convinced that a bottle of sunflower oil should be placed in the refrigerator after it has been “printed out”. The expert explained in an interview that such oil should not be subjected to frequent temperature changes.
“Sunflower oil should not be subjected to freezing and frequent temperature changes, as this leads to the destruction of useful substances,” Cheremina said.
Specialist added: if you want, after opening the bottle with oil, you can put it in the refrigerator, finding a place for it where the product will not be subjected to excessive cooling.
“In this case, it is better to choose the bottom shelf of the refrigerator,” the expert noted.< br>Outside the refrigerator, sunflower oil should be stored in a closed place that is not adjacent to the stove or battery – cool air should flow to such a place. Also, the oil must be kept in the dark – in the light, being open, it begins to oxidize quickly.
In general, Cheremina believes, it is better not to get carried away with frying in sunflower oil. It is distinguished by a large amount of polyunsaturated fats, which at high temperatures can be converted into carcinogens. According to the doctor, frying in coconut or ghee is more beneficial – they tolerate heat better.
Earlier, the MedikForum.ru portal wrote about which tomatoes can be harmful to health. 
Olga Cheremina healthy lifestyle nutritionist, nutritionist