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i'm of the opinion that using a microwave destroys the whole point of buying good-quality healthy food, due to the major loss of nutrients. (a double whammy especially when our food is being grown in such nutrient-depleted soils already!) there are a host of other ways to cook that don't necessitate as much nutrient loss.

so whenever i hear of a paleo using a microwave, i'm baffled.

how do you justify using a microwave, despite the health concerns? Any thoughts? I'm open to hearing different perspectives. Maybe microwaves aren't nearly as bad as they're made out to be? Personally, i would use it to disinfect a dishcloth or heat up water for non-food related things, but never something that will go in my body. not even for tea.

There are many concerns with microwave ovens, among them:

* Carcinogenic toxins could be leached from plastic or paper plates or covers and mix with your food.
* The food temperature may become extremely hot, at temperatures high enough to cause burns or steam buildup that could explode--this is especially problematic for baby bottles, and is one of the reasons why baby bottles should never be heated in the microwave (microwaving can also break down the disease-fighting ability of breast milk).
* Vegetables and other food lose valuable, cancer-fighting nutrients when cooked in the microwave.
* The chemical structure of foods changes when microwaved, with unknown consequences.

There have been very few studies done to determine what kinds of changes occur in foods that are microwaved, but rest assured the changes are significant.

Consider the 1991 lawsuit involving a woman who had hip surgery and died because the blood used in her blood transfusion was warmed in a microwave. Blood is routinely warmed before transfusions, but not by microwave. The microwave altered the blood and it killed the woman.

Microwave cooking vibrates the molecules in your food to levels they were never designed to experience. This tends to damage the highly perishable nutrients so they are unable to nourish you the way they were designed to.

A study published in the November 2003 issue of The Journal of the Science of Food and Agriculture found that broccoli "zapped" in the microwave with a little water lost up to 97 percent of the beneficial antioxidant chemicals it contains. By comparison, steamed broccoli lost 11 percent or fewer of its antioxidants.

Besides the loss of nutrients, microwaving forms new compounds (radiolytic compounds) that are unknown to humans and nature. It‘s not yet known exactly what these compounds do in the human body. It will likely be a difficult thing to sort out, especially when there are previously unknown compounds being introduced to humans from a variety of sources such as new food products (i.e., olestra) and genetically modified foods.

Perhaps the most concrete evidence of the dangers of microwaves comes from Dr. Hans Hertel, a Swiss food scientist, who carried out a small but high-quality study on the effects of microwaved food on humans. His conclusions were clear and alarming: microwave cooking significantly altered the food‘s nutrients enough so that changes occurred in the particpants‘ blood--changes that suggested deterioration. The changes included:

* Increased cholesterol levels
* More leukocytes, or white blood cells, which can suggest poisoning
* Decreased numbers of red blood cells
* Production of radiolytic compounds (compounds unknown in nature)
* Decreased hemoglobin levels, which could indicate anemic tendencies 
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can anyone post sources that are NOT quack Dr. Mercola?? – Bread-Eating Beelzebub Apr 13 2011 at 19:58
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i only cited mercola off the top of my head. but the dangers of microwaves are well-known. btw, i am curious.. why is he considered such a quack? i guess i wouldnt consider him a health authority and wouldn't trust his advice with my life, but i see that he seems somewhat knowledgeable in the field of nutrition. is it because he sells products off his nutrition ideologies and thus seems more like a gimmicky type? not challenging you, i'd just like to know what you think. – cloudsinskies Apr 14 2011 at 3:05
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Paul Chek is against microwaves as well. That is enough for me. I haven't used a microwave since I read Eat, Move and be Healthy by him over 1year ago. – Timbo Apr 18 2011 at 1:28
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43 Answers

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Of the four concerns mentioned, three are questionable factors.

  1. Leaching of toxins from plastic and other containers is less a function of the microwave and more a function of the container. If we heat foods in containers made of questionable compounds in the oven or stove, the same issues persist.

  2. Extremely hot food temperatures? How many people have burned themselves on things heated on the stove or in the oven more often than from the microwave? Our guess is a lot more.

  3. Admittedly, we should question the structural changes of foods heated in a microwave, but if the consequences of such changes are unknown, then we can't really say they're negative yet, can we?

In the end, the real concern here is over decreased nutritional elements, but that goes for things like boiling veggies instead of steaming them, also.

That all said, we admit that our microwaving has become much less frequent over the years. We boil water in it occasionally for a recipe when our stove-top is crowded, but eat leftovers cold more often.

Our microwave also doubles as a toaster oven, which is a neat feature, and we'll probably start using that more often.

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Mercola is almost as nutty as Dr. Oz. Microwaves are not ideal. Neither is sitting at a desk all day or driving 2+ hours in traffic. I do all three. – Dave S. Apr 13 2011 at 19:21
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ugh Mercola, what a you know what... – Bread-Eating Beelzebub Apr 13 2011 at 19:57
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All of you are wimps! Why, I don't use a microwave OR stove. I build a fire and dance around it.

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I have a gas stove and I dance in front of it. Does that count? – WordVixen Apr 14 2011 at 0:06
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Got any videos of that? I'll have to see it to answer your question :) – Thomas Seay Apr 14 2011 at 17:35
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Re: Mercola Mercola uses his MD to act like a PhD. The truth is, to get an MD you need barely any training in statistics or nutrition. His newsletters are full of sensationalist interpretations of studies, often those which are preliminary or inapplicable in vivo. Oh, but that's OK, because he sells just the right expensive supplement for all the problems he writes about. Total dreck. BTW I work with scientists and none of them believe microwaves are dangerous. There is TONS of evidence that frying and searing are and I do know scientists that steam or microwave all their food. It's just technophobia to demonize microwaves. I fry/sear a lot less since I've read the scientific literature on it. It's too bad since its so delicious :(

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I don't use a microwave much for cooking as I like to cook and for many foods the results are not as good as for other methods. Heating stuff up and cooking sweet potatoes are the exceptions. I managed fine without one untill I was 25.

Don't confuse countering pseudoscience and scaremongering with defending microwave use.

I was going to attempt to counter some of the missinformation quoted in the article you link too however I really can't be bothered. It appears that Mercola has collected together scraps of microwave nonsense from all the around the web in one article. If you want to know why it is incorrect or misinterpreted you can look it up for yourself.

"but the dangers of microwaves are well-known" Yes if by "well-known" you mean endlessly repeated scare stories and conspiracy theroies around the internet.

Mercola is a quack because he uses his Dr title to spread missinformation and sell products. Like any good quack he inlcudes just enough truth to draw people in. However his website is a complete den of iniquity for anyone who actually cares about truth, accuracy and science in the areas of human health.

If you don't want to use a microwave then don't, there is no reason to if you don't want to.

Just please don't avoid them out of fear.

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Don't confuse countering pseudoscience and scaremongering with defending microwave use. - - Thank you! – sherpamelissa Apr 15 2011 at 13:23
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I think that if you would spend some time thinking of what goes on in the micro that is TOTALLY UNNATURAL so the resulting mass of food cannot be anywhere near what it started as. NO Thanks on the micro. I stopped using one waaay before I became computer literate or even read something on the dangers of cooking this way. MY own thoughts rule the way I choose to live. Live long & Prosper! – sienna Sep 19 2011 at 14:41
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i don't even own one because

  1. I don't like soggy food
  2. the reasons you outlined above (ive never trusted them)
  3. i don't see whats so time saving about them. anything a microwave can do i can do on my stovetop or in an oven

i do have to say though, that I think toaster ovens are great and wonderful things. Why heat up my whole oven just to bake 4 eggs over ham? I am also considering getting an induction plate, since they're pretty cool and I'm interested.

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exactly! i've noticed that cooking sweet potatoes in the microwave make em taste bland and rubbery, but in the oven, they develop that delicious caramelization that CANNOT COMPARE! – cloudsinskies Apr 13 2011 at 18:57
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I haven't owned a microwave in almost a decade - there's nothing they're needed for that a toaster oven can't do just as well. Microwaved food is just icky in texture and taste.

I also hate the culture of food that's sprung up around the microwave: food that you wouldn't eat unless you have one, like pizza pops, or microwave rice in a bag, or those abysmal lunch entree thingies marketed at office workers. Horrible, horrible stuff that no one should be eating.

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I use a microwave at work to heat up my leftovers. It's all we have at my office, so it's what I use. I do 10-30 sec intervals so that I can stop when my food is warm. I am heating up delicious leftovers from the night before and not pizzapops or the like. And I enjoy my food warm. I don't notice a decline in the quality of my leftovers as long as I watch the time that it spends in the microwave. I don't microwave at home often - unless the little guy is getting super antsy for food - and let me tell you telling a 21 month old to wait for his food is an excercise in futility - so I gotta do what I gotta do.

I'm not going to feel bad about it. It's how I make do with what I've got.

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Ours broke. We didn't replace it. The teenagers are PISSED!

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i heat up water and maybe white rice with water drizzled in it for moisture. not much else in the microwave.

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Did you not know that microwaving water instantly turns it into radioactive toxic quantum goo? :) – Matt Apr 14 2011 at 20:39
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Yeah, no. Not buying it. I only use the microwave to reheat and to cook eggs but have no issues or concerns doing either. I've never seen any credible science that supports Mercola's claims. Show me that and I may reconsider but otherwise these claims just make no sense to me. (Well, I'll give ya the don't reheat in plastic one. That one I believe is true but that's a function of crappy plastic and no of microwave technology.)

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i don't own a microwave, (and fwiw, i don't think it's "paleo"), and mercola's a shameless sensationalist.

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You're not alone. I don't use them either. But I'm anticipating a lot of responses defending microwave use, seems like a lot of people on here use them.

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They can defend away, I won't change my mind :) for one, i can always tell when food has been microwaved because it's usually too damn hot and its too damn hot through and through. The main argument for microwaves is that they destroy nutrients less than other cooking methods supposedly, but this is only potentially true if you cook your food for the absolute least amount of time it requires to be cooked. Nobody does this. Nobody. Not even culinary pros I've worked with in the past in professional kitchens. Nobody even knows precisely what these times are. – tartare Apr 13 2011 at 19:11
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to me they embody everything that's wrong with American food culture. The notion that hands off, snappy, fast and easy is best. A total disconnect with your dinner. Although that said, we had one as a kid and I really always did want to put a cd in it when cd's came out. – tartare Apr 13 2011 at 19:15
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It shouldn't be that baffling. Convenience makes paleo more accessible. Anything that increases my chances of eating right is a good thing.

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Once I got into real food, the microwave got relegated to melting butter and reheating leftover take out. While I'm not convinced that microwaves are dangerous, I'm not convinced that they're safe, and I AM convinced that they're totally unnecessary. And take up a lot of space.

So when it died a few months ago, I got really excited, and talked hubs into at least considering a toaster oven as an alternative (same space, same price, and I can rotisserie a chicken in it- try that in a micro!). After a few weeks of reheating his pizza or Chinese in a skillet and buying a tiny cast iron skillet to melt butter in (which I love, because I use it for BUTTER and it has "Dieter's Skillet" embossed on the inside), he finally agreed that we have no need of a microwave at all. We did get the toaster oven though, because he was geeking over the rotisserie and our gas oven is too hot to use over the summer, and because I got a great deal on it. But even that isn't strictly necessary.

We do use the microwave at work though. I don't like cold food often, and hubs is still mostly SAD (I fall between WAPF and Primal/Lacto-Paleo), so it's just practical to use what they provide at work. But that's pretty much it.

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I have no idea whether the health concerns are real, but we sold ours for $10 when we moved. It took up too much counter space that's better used for other things. We only really used it for heating up leftovers anyway. Soups and other runny things can be heated on the stovetop in 5 minutes, and the oven will warm up a plate of food in 15-20. Likewise, melting butter and boiling water really don't take that long over a flame. If I'm in that big a hurry, it's probably a sign I should slow down.

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I analyzed that 2003 Journal of the Science of Food and Agriculture article here: http://perfecthealthdiet.com/?p=1315.

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Please tell me how the microwaves produced in a microwave alter the chemical structure of a food any differently then the infra-red waves from a fire would alter the chemical structure of the food?

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I dont use one. I want to be able to hear, smell and taste the food while i am cooking it. I dont generally reheat food except for braises, and that i will do in an real oven. Warms more evenly and not too quickly, and u can baste the meat.

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I work 50+ hours so I'm not able to sit at home and cook every meal so a microwave is a must to heat up my meals

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I cook once a week, and reheat all my meals, using my stove/oven.. Usually takes 20-30 min... I'm doing something else in the meantime, so it doesn't real affect me time-wise.. – The Primalist Apr 13 2011 at 20:22
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A couple of years ago, we stored ours away in the garage, just to see if we could live without it. 6 months later we gave it to my dad's minister and haven't looked back. I always hated the way foods tasted kinda soggy after being reheated in the microwave, so taking a few extra minutes to do it properly in the oven or stove top is worth it to me.

I'm not sold one way or the other on whether microwaves are harmful, but it's definitely a kitchen tool I no longer want or need.

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Ever since I went paleo, I have no need for microwaves, stoves, or ovens. I use the power and will of my ancestral mind to make my food just the way I want it.

** ahem *

Yes, I still use a microwave to heat up food. I'm not convinced that they're bad for us. I used to know someone who cooked everything in a microwave. Her idea of gourmet though was lean cuisine or a can of corn heated up. Blech.

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I don't use a microwave. I burnt ours out trying to defrost some frozen okra (BAD IDEA). If we replaced it, it would mean that my husband could easily nuke up some Pizza Rolls, instead of eating the nutritious and scrummy dinner that I assembled for him. It does suck that we have to reheat leftovers on the stove or oven though, as it requires more dishes (no dishwasher, either). On the other hand, this laziness works to my advantage, since I have to really think about whether or not I want to go through the time and effort to eat something. Am I actually hungry, or just a wee bit peckish? Laziness usually prevails. I do have a micro at work, though, which I am grateful to use for heating up my leftovers :)

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Don't own one either.

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I agree and I don't use mine that often, and when I do,(for a quick reheat) I say, "I think I am killing all the nutrients that used to be in this food." (thanks for the reminder)

I think related to this:

I have noticed in other posts that are regarding microwaving, or anything relating to electro magnetic fields (EMF) there is someone out there denying it. This is why I think this happens: Because the whole world would come to a halt if we all stopped using electricity. I think its unnatural so I personally try minimize my usage in my small ways. Like for example, unplugging the cordless phones at night, turning off the wi-fi at night, turning off cell phones for sure at night. This gives my family less over-all exposure.

I read on Snopes that water microwaved vs regular tap water (room temperature) killed a plant and that was listed as a myth...I really want to try this sometime for myself.

Thanks for bringing attention to this subject.

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We never had a microwave growing up, Mom just cooked everything stovetop, in the oven, or in the toaster oven. I lived with some people for a while and there was a microwave, and I found myself susceptible to the Lean Cuisines and Smart Choice crap because of it. But once I moved out of there, I never bothered with getting a microwave, and feel like I am healthier for it, and appreciate the process of cooking in and of itself. Like a poster above I've been in office situations where the only option for warm food was the microwave, but in that case, you just make due. It's not completely horrible to have a microwave, IMO, but as far as I'm concerned, there is no need for a microwave in my home.

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Interesting! I've never thought about it but I rarely use mine, occasionally to heat hubby's dinner because he never comes home at the same time so keeping it hot isn't always practical. I don't eat any instant foods, everything from scratch and real; even left overs for me are difficult because of the developing histamines that aggravate my system. I guess I dont eat anything from the microwave, good discussion!

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I have a friend who uses the microwave more than the stove because it uses less energy. He, however, is not concerned with flavor (considering the choice of restaurants he picks).

Me on the other hand... I use it to heat of dog food, heat up water for tea when I don't have time to wait for the stove, and to re-heat leftovers.

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I got rid of my microwave before I ever went paleo because I realized I was buying crappy convinience food instead of really cooking. Now I live somewhere that has one built in but I never use it. Nothing tastes good in the micro except maybe steamed veggies, but I prefer sauteeing veggies in butter so it's a useless artifact in my house.

I'm not really afraid of it, I just don't think it leads to healthy eating practices.

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I dont like micro because i like cooking on stove top and oven. Its more fun. I like to have something to do. Then again i have an immersion circulator, i am not sure what to think of it. Sure you can make medium rare short ribs with it that are amazing. It just feels so clinical. I wish i had an gas stove top. But gas is not so common in our country. I cooked once with one and it was so practical. It could get a lot of heat to a skillet, or just very little if needed. Very good! My electric is so underpowered and the cooking hobs are too small for my big skillets that i love. Perhaps i am compensating something with large skillets. Yep, i am ;D but dont tell anyone. :)

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