myth? olive oil heated is a trans fat

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Hi, hopefully someone can answer this one.  I was told just today that using olive oil to cook at high temperatures turns it into a trans fat - the worst kind of fat.  Is this fact or fiction?  I'm inclined to believe it's not true but I have seen some information that using it beyond it's smoke point (who would?) could cause problems..  I fry most of my food as my grill doesn't work.  Am I doing more harm than good?  Are we supposed to be avoiding fried food as much as possible?

deir's picture
deir

from what I've always read-  all vegetable oils oxidize at hight heat. The best fat for frying is lard, or coconut  but we can't do cocnut and not sure on lard. So yeah- frying at high heat isn't good but I do it sometimes.

veryhappymom's picture
veryhappymom

I just found out that my light olive oil, by Bertolli,  contains extra virgin oil as well.  Read your labels carefully. 

Hopeful's picture
Hopeful

I think it is true. I've heard Matia say a couple times that olive oil should not be used for frying foods, because it turns toxic above 400 degrees. I've heard that she uses avocado oil for cooking. Of course, this doesn't help us any. I have been cooking my food in butter when I fry things or cook it in a skillet. I have really noticed a difference in how I feel after I eat when I use butter instead of olive oil. For a long time, I didn't head the warning that it turned toxic at high heat, and cooked with it anyway. Yes, butter is fattening, but still healthier to cook with!!! If you can tolerate it that is : /

researchnerd's picture
researchnerd

Thanks for posting this ladies.  I remember learning this in college, but completely ignored it since getting IC.  
Does sauteeing count as frying?  Anyone know the status of lard?

missmadmolly's picture
missmadmolly

I've been frying ALOT of my food in olive oil thinking it's the healthy alternative - I'm miffed..  I bought some avocado oil which cost a pretty penny but not sure if we're aloowed to eat it. Damn damn damn! 

Christine222's picture
Christine222

We can eat it later on, like when you are well into list 4 or 5 but not early on as she says it can cause bladder pain. I do use it on my skin though.

missmadmolly's picture
missmadmolly

Oh ok thanks Christine.

selichan's picture
selichan

There is a local burger shop in LA that uses lard to fry their fries. I will occasionally eat there if i am in the area. I never reacted to it, but always wondered how bad it is. Matia said it's ok as long as it's once in a while. As for olive oil, i also read, the best way to consume it is to add towards the end of cooking, or in salads etc. I love butter, and think it makes everything more flavorful.

Bagpuss's picture
Bagpuss

I think I asked DrB this, and I THINK that the reply was that olive oil would have to be very very heated to be unsafe and at this point - I'm on list two still - there werent many other great choices. Later on she said I could use avocado oil but not yet. 
 
I also fry food as my grill doesn't work either!!! I d often start things off in water and add a little oil later or use butter but it doesn't feel the healthiest of options . Sounds like it is a valid alternative for now though  :)
Tricky isn't it!!!
Julia

MissCC's picture
MissCC

Hi Missmadmolly, The answer is yes - any oil (except coconut oil) becomes a saturated fat as soon as it's heated and cooked with. That's why when buying Olive oils you should also always check that the bottle says the oil is "cold pressed" which means that when it was made it wasn't subjected to heat which would alter the bio structure of the oil. 
Same goes for nuts - the second they're roasted they are a saturated fat which is why when eating nuts eventually you should always go for raw ones rather than roast!
Hope that helps :)