SEARCH:
Sign in | Join | Help
search Mercola.com
 
FREE Subscription 
The World’s Most Popular Natural Health Newsletter
Are You Sabotaging Your Food by Overheating It During Cooking?


Like everyone else, I'm always learning new information. A couple of weeks ago, I was lucky enough to have the opportunity to go to Dr. Mercola's Optimal Wellness Center in the Chicago area. There, I met his top nutritionist, Jim Marlowe, and he gave me a tip for cooking that was actually quite a revelation to me.

As you know, the standard cooking temperature for most foods seems to have become around 350° F. But by cooking something at that temperature, you actually damage the molecular structure of the food.

Jim explained to me that a far better temperature for cooking, the maximum temperature to set the oven on, is 225° F. The boiling point for water is actually 212° F. So it doesn't take a scientist to figure out that by capping off your cooking temperature at 225° F, you're going to do far less damage to your food, and as a result, you'll cause yourself far less damage by eating foods cooked at a lower temperature.

Ideally, you'd want to be cooking your food in a slow cooker on the low setting, because that, again, will be using a low heat. But if you have to use the oven, then Jim recommends that the cap point, the top temperature you should use, is 225° F.

Bear in mind, this does affect the cooking time somewhat. At 225°F, you'll need to add approximately 50% over and above the original cooking time, in essence, 150% of the original cooking time in total.

EXAMPLE: If a food would normally cook at 350° F for 1 hour, it will need 1½ hours to cook at 225° F.

I'm definitely going to implement this principle from now on. As a result, I'm sure my family and I will see the benefits, and I hope you and yours will as well.





 
 Do you find this article interesting?
Comment on This Article Community Comments (101)
 
 
Posted On Jun 23, 2007
Many of you younger readers would not remember a lady named Ann Wigmore!  She brought WheatGrass juice into the limelight during the 70's and 80's.  I was lucky enough to have met here during her visit to our country Australia during the mid 80's and even luckier to have her visit my little town in the country to talk about her story.

She explained that all heating of food killed the natural enzymes in our food, which facilitated digestion in our bodies.  Therefore she advocated being a vegetarian and eating raw food.  In fact, she said, "I threw out my stove 20 years ago."

To give an example - how many of you cook cabbage and then subsequently suffer wind or gas?  However, if you have Cole Slaw, which is raw cabbage, you don't get the gas?  Of course, if you know herbs, you will of course add Dill to your pan, just before removing the cabbage or cauliflower and that helps belay the effects of wind or gas.

However, Ann Wigmore used to travel all over the world carrying her sprouts and raw food, wherever she went.  I don't know how customs and security would view that these days, but she was a very healthy lady. 

Maybe worth thinking about.

Personally, I have always (and I am 62 yrs old now) cooked with steam and for as little time as possible, so that the veges are still a beautiful colour and firm.  My mother, who is 89 yrs old, is still alert, with a mind like  steel trap and very healthy.  She takes NO medication at all, apart from supplements such as MonaVie Acai berry and Ganoderma - natural products, as I do.

Way to go!



 
Lizhealth
Novice User Novice User, Joined On 6/2007
Lizhealth  
Replied

GinaVoce25
Savvy User Savvy User Joined On 12/2006
GinaVoce25  
 
Posted On Jun 23, 2007
Ah, but several foods are not meant to be eaten raw. Broccoli and cabbage (and others in the Brassica family) as well as spinach contain erucic acid and oxalic acid (respectively), an antinutrient that blocks absorption of protein and other nutrients. They also are goitrogens -- disrupt thyroid function! Yuck! So always lightly cook these foods, better yet ferment them (sauerkraut), because that's the healthiest way.

Peanuts are another one -- don't buy raw peanut butter! Roasted!


swelpy
Novice User Novice User Joined On 6/2006
swelpy  
 
Posted On Jun 23, 2007
Liz I am very interested in the supplements your mother is taking,Monavie Acai berry Ganoderma.Where can one procure these?
I also do not take ANY medication and NEVER will till me dying day as I have no faith whatsoever in Allopathic medicine!!!
I also live in Australia(Cairns)and am 77yrs young.


C Ed Wright
Savvy User Savvy User Joined On 6/2007
C Ed Wright  
 
Posted On Jun 24, 2007
contrarian, first of all "studies have found" virtually anything the studiers wanted to find.  It's a highly developed tool of disinformation among other things.  Anyway, there is no way to know what is "normal" for six billion people consuming six billion different combinations of foods, toxins, etc.  What is not normal is having "everything" give you gas (which would naturally result in a "small circle of friends", LOL!  Maybe you should post as "calliope"...?, LOL).  Seriously, though, you might want to find the cause, for both obvious and not-so-obvious reasons -- anything so abnormal is a signal that something is amiss, hence a potential problem that could become more serious.  There is a wide range of possible causes, ranging from dysbiosis to semi-latent IBS to lactose or other food intolerance, too many to bother speculating about here especially with zero personal dietary info to begin with.  It's not normal & acceptable.


wetherbee333
Savvy User Savvy User Joined On 5/2007
wetherbee333  
 
Posted On Jun 24, 2007
contrarian- You and my husband would be best friends.  Everything gives him gas, even water! Since I've been drinking raw milk, and eating most of my food raw or nearly raw (very rare venison, elk, etc) and I've completely cut out sugars and grains, it is VERY rare if I get gas anymore. Now my husband on the other hand has not yet accepted my kind of diet, and I sure wish he would, I get so disgusted with him and his "gastronomical phenomenon". He proudly exclaims " A FARTING HORSE WILL NEVER TIRE, SO A FARTING MAN IS THE ONE TO HIRE!"


meca
Novice User Novice User Joined On 6/2007
meca  
 
Posted On Jun 24, 2007
I could not view it. 


helpingheart
Savvy User Savvy User Joined On 6/2006
helpingheart  
 
Posted On Jun 25, 2007
weather bee333 - I recently had the same problem as your hubby earlier this year, so I was looking around for some kind of digestive system cleanse, and I found - In my opinion a very good one, it's drnatura, I used both the colonix and toxinout programs for 90 days to get a total cleanse.  My digestion is so much better, no more gas, no more indigestion, no more bloating, no more stopped up feeling, and well the list just goes on and on - I've mention this to other VV readers, in hopes of helping them - so if this helps you and your hubby, great!

Now I only get gas, when I have pasteurized milk products, something too sugary, and over cooked veggies - both things I'm trying to avoid completely and not have at all.


dovetail
Novice User Novice User Joined On 7/2007
dovetail  
 
Posted On Jul 11, 2007


tolemeo
Novice User Novice User Joined On 6/2006
tolemeo  
 
Posted On Feb 16, 2008
Isn't Monavie pasturized?  Are there really any viable antioxidants available after pasturization?


Craigernic
Novice User Novice User Joined On 6/2006
Craigernic  
 
Posted On Nov 29, 2008
MONAVIE states that the product is gently flash pasteurized and the antioxidant value is not effected by this process.


 
 
 
Posted On Jun 23, 2007
actually i took the breakdown of food theory to the extreme at one point and went total raw diet.  I ate all my food raw, that is, raw milk, raw cheese, raw veggies, and.....raw organic meats! beef, bison, fish, eggs.  It was an interesting experience, i only did it for 2 months, but i felt incredible! my weighlifting jumped up, i only needed 5 hours of sleep at night, and after a few weeks, lightning started dancing around my shoulders.  ok, maybe not the lightning, but i DID feel really good.  The only drawbacks were, 1)  I kept expecting to fall ill every day from all the stories about salmonella, etc...but it never happened! i was shocked! and 2)  I had no friends on friend day.  no one wanted to be around me during mealtimes, people at work ran shrieking in fear as i pulled out my lunch. 

 
pexx421
Novice User Novice User, Joined On 2/2007
pexx421  
Replied

Fiesta
Novice User Novice User Joined On 5/2007
Fiesta  
 
Posted On Jun 25, 2007
pexx421, You say that you only ate raw for 2 months and felt great. Are you still eating raw or did you quit total raw? I'm very interested in this.

 
 
 
Posted On Jun 20, 2007
Would someone please help me with the science behind this? I was under the impression that the reason we did that bunson burner experiment in chemistry class with the paper cup full of water directly over (sometimes touching!) the flame was to demonstrate that so long as something contains water, it can never actually increase in temperature above boiling point. And it's not like I've ever seen a roast (or an analogue meat thermometre) actually get hotter than 200 degrees fahrenheit.

So if your food gets up to the same temperature because you've slow-cooked it at a lower heat, why is that better than if it gets to the same temperature by cooking it faster? Are there times when it's better to cook a certain type of meat one way, but a different type of meat another? For example, I don't slow-cook beef and lamb because I prefer my steaks and roasts rare, and slow-cooking tends to result in meat that's cooked more evenly.

 
Maj_203
Savvy User Savvy User, Joined On 3/2007
Maj_203  
Replied

proatc
Apprentice User Apprentice User Joined On 12/2006
proatc  
 
Posted On Jun 20, 2007
I agree totally Maj, the boiling point for water is 212, but is your burner on 212?  Or is it hotter to boil the water faster.  I agree also to a boiling point and a full out roaring boil, they are different but yet they are the same.   Meat that is prepared Medium rare probably has destructed protein on the outside, dark color and perfectly good and unabated protein on the inside, pink color.  
The point I take from this is to not get the temp of the meat greater than 225. Charbroil the meat and eat the insides if you have to.  I am also thinking of the economic and energy efficient side to this longer cooking time in my electric oven!  There is only so many hours in the day to cook and well more than one way to achieve the desired result.

Don't know what your profession is Maj, but did you ever think you would use what you learned in Chem class?  Great point!


Amanda Rose
Savvy User Savvy User Joined On 6/2006
Amanda Rose  
 
Posted On Jun 20, 2007
Sure food can get hotter than boiling.  Make candy one of these holidays.  It requires water, sugar, and butter basically.  You'll heat it well over 300 degrees F in the process.

Those thermometers measure the internal temperature of the meat.  The outer part will be hotter.


Ber
Savvy User Savvy User Joined On 4/2007
Ber  
 
Posted On Jun 21, 2007
Water can only get to 212 degrees but oils, sugars, and other chemicals can get much higher.  Actually it is the chemical changes brought about by these heats used in the different cooking processes.

I teach my children a class called Science in the Kitchen, great fun.  Canning, pickling, baking, etc are all chemical processes and the different temps are critical in some, not all, but most.

Try biscuits that need high short bursts of heat, try frying in 225 degree oil, yuck.  Carmelized onions are out too.  Forget those flaming plantains too.  My breads would be more like a shoe, tortillas are out and forget pita bread too.  I cook those puppies at 500 on a stone.  

Actually I use my crock a lot but somethings are just better on the grill or in the oven.  


Maj_203
Savvy User Savvy User Joined On 3/2007
Maj_203  
 
Posted On Jun 21, 2007
Ber said: In fact the temperature changes the chemical composition of the product when it does rise that is the real issue I believe.

I understand that's the point, but I don't understand how the science gets there. If you cook a turkey at 350 degrees, the turkey, itself, doesn't get that hot. So, chemically speaking, what's the difference between getting the internal temperature of a turkey to 165 degrees by cooking it for a few hours at 350 degrees or by cooking it twice as long on a lower temperature? Doesn't the destruction of nutrients happen regardless?

Amanda Rose said: Sure food can get hotter than boiling. Make candy one of these holidays. It requires water, sugar, and butter basically. You'll heat it well over 300 degrees F in the process.

I know enough chemistry to realize that adding a large quantity of sugar to a solution will increase the boiling point of the water, and the less water there is present in the solution, the hotter it can get. But fats in meat are not soluble in water, so the boiling point of the water in food shouldn't get much higher. Or does protein act like sugar does?

proatc said: Don't know what your profession is Maj, but did you ever think you would use what you learned in Chem class?

Absolutely! It doesn't matter if your profession is housewife or chemical engineer. Chemistry (and biology and algebra, etc) are everywhere!


magnet_203
Novice User Novice User Joined On 6/2007
magnet_203  
 
Posted On Jun 23, 2007
Except for microwaving, heat applied to food flows from the exterior  to the interior.  Did you ever see how water boils in a pot?  It starts along the edge and bottom first and then gradually moves toward the middle, finally reaching a rolling boil.  The water near the edge of the pot can be at boiling temperature, while the water in the middle is still relatively cool.

As long there is any water in food, the heat tends to flow into the water until it is evaporated.  If the heat flow is slow and gentle, the temperature will remain close to 212 degrees F. until all the water is completey boilled off because extra calories are needed to convert liquid water to steam.

If food is cooked at a temperature only slightly above 212 degrees F., the heat will have a chance to flow to the water without burning anything.  But if high heat is applied, the exterior can be burned because all the water on the exterior has been evaporated before all the water in the interior.  So exterior temperatures can rise above burning, while interior temperatures are still at boiling point.  That is why it is better to cook food at relatively low temperatures.

When food is deep fried in oil at high temperatures, the cooking process is rapid enough to preserve the moisture but not burn the exterior.  That's what happens with French fries, batter-cooked shrimp, and fried doughnuts.  The fat allows high temperature cooking because the heat is never concentrated so much in any spot to the extent that burning occurs.

Microwaves form hot spots within food.  Thus you can get burning very easily in foods such as popcorn and bread.


DaveB_203
Apprentice User Apprentice User Joined On 10/2006
DaveB_203  
 
Posted On Jun 23, 2007
I think it varies with the foods you cook and would believe that one could cook food at higher tempatures without much loss of nutrients/protien. When I cook turkey burgers, I always broil them on high for about 6 minutes one side and another 5 minutes on the other side and their done. Usually they come out perfect and the taste is great with just a little sea salt, garlic powder and pepper with raw onions while they are cooking.


Kevin Rose
Novice User Novice User Joined On 10/2006
Kevin Rose  
 
Posted On Jun 23, 2007
Hi Contrarian.

Brussel Sprouts. I love 'em. What's the problem with them?


Maj_203
Savvy User Savvy User Joined On 3/2007
Maj_203  
 
Posted On Jun 23, 2007
magnet said: Except for microwaving, heat applied to food flows from the exterior to the interior.

After doing research on microwaves and food, I got rid of mine. I have to admit, I really, really like the extra counter space.

magnet said: If food is cooked at a temperature only slightly above 212 degrees F ... That is why it is better to cook food at relatively low temperatures.

So the point is to avoid burning the outside of the food? Should I assume that browning and burning are interchangeable for the purposes of nutrition?

magnet said: When food is deep fried in oil at high temperatures ...

Perhaps there's also the matter of the breading burning and thus the stuff inside the breading is OK?

I would like to thank everyone who has supplied answers to my question, and by no means is this encouragement to stop contributing if you have more information. I'm still not 100% certain that I understand, but I understand better than I did before.

:)


Cas_203
Apprentice User Apprentice User Joined On 10/2006
Cas_203  
 
Posted On Jun 24, 2007

Contrarian,

You have not posted a single comment that is not a reply to someone else, and they all seem rather pessimistic. Why must you be such a nay-sayer? I am sure you have a great deal of advice/education to give, but must you do it in such a negative, destructive manner? Your messages seem hateful and egotistical… I am sure you believe strongly in the issues and studies you have written about, but that doesn’t make everyone else wrong. May all your days be sunny summer Sunday afternoons… lighten up!


 
 
 
Posted On Jun 23, 2007
Over 40 years ago the famous nutritionist, Adelle Davis, advised cooking at slow temperatures. It made sense then as it does today. Some things just make a lot of sense.
Catryna

 
CATRYNA_203
Apprentice User Apprentice User, Joined On 7/2006
CATRYNA_203  
Replied

CATRYNA_203
Apprentice User Apprentice User Joined On 7/2006
CATRYNA_203  
 
Posted On Jun 24, 2007
To contrarian:
In regards to your comment on Adelle Davis. Quack? Well that's anyone's opinion, one that I would never share. Was she a weirdo, oh yes indeed!!  Did she get some things wrong? Yes, she did. But, overall she was ahead of her time and had a great deal of knowledge that  was right on the money. Compared to the overall diet of the average American, back in the 50s through the 70's, when she was around stating her case, she was definitely one of the few who advocated breastfeeding or decent homemade raw milk formulas and wholesome raw foods, raw dairy, whole grainsand cooking correctly versus the degenerate fare of most people then and now.


wetherbee333
Savvy User Savvy User Joined On 5/2007
wetherbee333  
 
Posted On Jun 24, 2007
CATRYNA- My grandmother followed the suggestions of Adele Davis quite closely, and she lived to be 100 years old.

 
 
 
Posted On Jun 23, 2007
Ok, I'm convinced.  Until I read the newsletter,  I had never heard of this style of cooking.  I just cooked a chicken breast at 225 and it is the best chicken I have ever eaten.  Guess that's how I bake from now on!!!

 
Patty D
Savvy User Savvy User, Joined On 6/2007
Patty D  
 
 
 
 
© Copyright 2009 Dr. Joseph Mercola. All Rights Reserved. If you want to use this article on your site please click here. This content may be copied in full, with copyright, contact, creation and information intact, without specific permission, when used only in a not-for-profit format. If any other use is desired, permission in writing from Dr. Mercola is required.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, nursing, taking medication, or have a medical condition, consult your physician before using this product.