Paleo Plan

Peanuts Are Not Paleo

Thanks, Wikipedia.

It’s clear that people are very attached to their peanut butter. And since peanut butter has the word “nut” in it, even Paleo people assume it’s ok to eat it, despite the warnings all over every Paleo site in the internet kingdom.

Peanuts are as much nut as sweetbreads are bread. And sweetbreads are organs, by the way. Legumes aren’t on the Paleo diet and therefore, peanuts aren’t either. Let’s talk details.

While legumes, or beans (lentils, black beans, soy, peanuts, etc.), aren’t as bad as grains, which contain gluten and other harmful substances, they should be avoided. They absolutely must be cooked for long periods of time, sprouted, and preferably fermented to remove, at best, most of the harmful lectins and phytic acid contained in them.

Legumes are a mediocre source of protein, a huge source of unnecessary carbohydrates, and therefore produce a big glycemic response. Moreover, legumes give most people gas. I think they’re sort of a waste of calories.

In my opinion, peanuts are one of the more alarming legumes. With the number of peanut allergies doubling over the last decade, there’s clearly something going on here. There are hypotheses, but no concrete reason for the increase in allergic response to peanuts. One theory has to do with the aflatoxin present in most of the peanuts (and wheat, rice and other major crops) in the U.S.

Aflatoxin is a toxin that is created by mold that forms when crops like peanuts are stored in large masses. It’s one of the most carcinogenic substances known. Besides the fact that it could cause cancer if enough of it is ingested, there’s also growing suspicion that aflatoxin could be causing an immune system reaction – an allergy.

There’s really not enough evidence to prove this yet, but the fact that there’s a poisonous substance permeating your peanuts should give you pause.

Roasted Peanuts Are Worse
Although the roasting process will rid the peanut of some of its phytic acid, it actually changes the structure of the proteins so as to make them more allergenic. By the way, when you hear the word allergy, you might be thinking to yourself, “Well I don’t have anaphylactic shock when I eat peanuts, so I’m fine.” But allergies can be way less severe than your throat closing up. It could be as subtle as a skin rash or just feeling mentally out of it. Or maybe it makes your digestion wonky.

Anyway, we roast our peanuts in the U.S. while in China, they boil or fry them. According to this study, China wins because the allergenic potential of the boiled and fried peanuts was less than the allergenic potential of the roasted peanuts. That may be one of the reasons so many more people in the U.S., and not China, are allergic to peanuts.

There are about 9-12 peanuts in a tablespoon of peanut butter, so if you’re eating a few tablespoons of the stuff a day, that’s kind of a lot of peanuts…

Overall, I think almond butter is a better choice if you’re going to insist on having a brown spread on your toast – wait… banana? I just don’t think peanuts are worth it, but as always, it’s your choice.

Anyone have any thoughts on the topic?

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  1. Thanks for shedding light on aflatoxin. Very interesting!

  2. I have to wonder about Aflatoxin and allergens. A large part of typical peanut consumption is from very large makers of peanut products. The big three peanut butter brands (JIF, Skippy, Peter Pan), Planter’s peanuts, and Reeses. For those large manufacturs, the USDA is hawkish on observation and testing for Alftatoxin. The actual dangers are most found with independent, even organic (which don’t use fungicides) peanut product makers. The health food store that buys peanuts locally, stores them, and makes peanut butter on-site.

    The USDA could never monitor every one of these and it’s possible for large amounts of aflatoxin to be in their products, undetected. Secondly, the large peanut butter brands remove peanut oil (which is very high in lectins) and replace it. The best of those, Skippy, uses palm oil, which doesn’t need any kind of hydrogenation to be mostly stir free at room temperature (it still needs it occasionally in warm rooms). I only eat that occasionally, and avoid peanuts in general. I mean to point this out for those who eat a lot of peanut products.

  3. Both my wife and I experience joint pains if we eat peanut butter. Like the author of the above article, we find almond butter to be a better choice.

  4. What about Almond Butter or Almonds? Are they okay on Paleo?

  5. ughh. This is horrible news. Sugar free peanut butter is the one thing that has helped me stay on a paleo/like diet…..sigh.

    • Hi Wendy – But almond butter is delicious, too!

  6. Krystal

    I love almonds, but I cant stand the grittyness of almond butter. Any other suggestions for substitues?

    • Neely

      Krystal – You could try cashew butter or any other nut butter. is a really good source of high quality but butters.

  7. sonja

    If the toxins have more to do with mold that occurs in mass storage, what about a paleo eater who would like to grow their own? Is it strictly the makeup of the peanut itself that is going to affect my body, or the poor handling of a peanut? I like the idea of a homegrown, sprouted peanut…maybe even fried!

    • Neely

      Sonja – It’s actually both. The makeup of the peanut and the poor storage of it. Sorry if that wasn’t clear in the article. But a handful of home grown peanuts here and there is going to be fine for most people, so if you really want to do it, go for it!

  8. John Corners

    You can eat peanuts raw — they must not “absolutely be cooked for long periods of time”, the premise upon which your entire argument rests. Please, more research, less opinion.

    • John Corners – I think you missed the last part of that sentence where I said, “to remove, at best, most of the harmful lectins and phytic acid contained in them.” Which is true. You need to process legumes correctly in order to remove some of the anti-nutrients. You can certainly eat them raw, but that doesn’t mean it’s good for you.

  9. I have to think that the fact that peanut allergies and other things that might have once killed people, are now being treated and therefore are passed down to the next generation.

  10. In1960’s central Pennsylvania, I grew up on peanut butter sandwiches on white bread! Who knew? I have to wonder why I am still so healthy now though…I did elvole nutritionally over time, but not for decades.

  11. I noticed achy joints after eating peanut butter just this evening. I adore it but it is not worth the pain.

  12. Try sun butter.

  13. Neely,
    I have a severe tree nut allergy and it makes me so sad to miss out on some of the great recipes you guys offer that include almond butter. So sometimes (rarely, but it happens) I substitute with peanut butter. I have tried using coconut milk and coconut or tapioca flour as substitutes for almond milk and almond flour but it doesn’t really create the same product. I wonder if you know of any good sites or resources designed for Paleo purists with tree nut allergies. I don’t have any other legumes in my diet, but the peanut/almond contradiction is something that gets in the way of my Paleo way of life…
    Thanks for this article. It spread some light on long-standing questions!

  14. crishelle

    I have been using sunflower seed butter instead of peanut butter for awhile now. Although I like Almond butter, it tastes nothing like PB. That’s where the sunflower seed butter is superior and makes my kids feel like they’r not missing out on as much.

  15. My child has peanut/mold allergy. Are you saying almond and almond butter do not carry aflatoxins? He’s never been tested fo almonds but are they in the same class?

  16. Where did you get the info that phytic acid is harmful? It’s not.

  17. Doesn’t the paleo diet have to do with what foods were available at the time and not with what we think of them? I am not advocating eating peanuts just wondering how a good that was absolutely available to our ancestors would not qualify as “paleo”

  18. If mold is the issue, do you need to worry with sunflower seeds, in sunflower butter?

  19. No almonds. I have good old cold sores.

  20. annette conway

    Are raw peanuts to be avoided too? I thought raw peanuts in moderation would be okay. I like to put them in some cooked dishes, (so the cooking notion is a small plus from what I read), and like that they are inexpensive. I need variety when in comes to nuts…same as everything else I eat. Comments on this please? Negative comments welcomed :)

  21. annette conway

    To candy:

    I grew up on packet soup and like you evolved nutritionally over time. I too am healthy at almost 49. I think moderation is the key. Don’t know about you, but was fed all other food WITHOUT additives and farm healthy, from ground to table food (including milk straight from the cow).

  22. I think it’s crazy to focus so much on a legume when many meats produce carcinogens when charred … Not to mention the way the body processes certain animal fleshes …. The human body is designed to adapt … Think of all the cultures of the world and all of the different diets. Not to mention the fact that many people on the “Palio” diet are sedentary, which to me doesn’t make sense. Anyhoo … To each his own. I find it very odd to call one food ‘bad’ and another ‘good’.

  23. There is some reason to believe the increase in peanut allergies is related to the introduction of Genetically Modified peanuts into the market (around 1997- 2000)… Shows some ininteresting things.

  24. I am not a huge peanut butter fan but I like it now and then. Being on the paleo diet, I was very excited when I found sugar and salt free peanut butter with 1 gram of carbs per serving. I know that peanuts were not good on a paleo diet but wasn’t sure why, so thanks for clearing that up.
    Still don’t really understand why I can’t have this peanut butter when the actual carb count is lower than macadamia or almond butter. Very odd.

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