1

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What's the deal with nightshades? Are tomatoes truly paleo? Do they cause acne?

Answered on September 12, 2014
Created October 28, 2012 at 6:38 PM

I keep reading that nightshades are bad, and not " true paleo." apparently the lectins in foods like tomatoes can cause inflammation and acne.

Thoughts?

9f54852ea376e8e416356f547611e052

(2957)

on January 19, 2013
at 11:20 PM

It should be noted that there's no consensus on which factors determine average height of a population - but the hypothesis you presented is sound.

74786bbe8254844304a33943290c4d6d

(1663)

on January 19, 2013
at 09:35 PM

Chris Kresser has said that he hasn't seen any serious detriment to thyroid function whilst eating goitrogenic veggies in his practice. Also, cooking them helps.

A7768b6c6be7f5d6acc76e5efa66464c

on October 29, 2012
at 12:34 PM

True if you don't consider the indigenous people of mesoamerica as representing "ttraditional cultures." But domestication/cultivation there may only have occurred 2,500 or so years ago, which isn't that long compared to many traditional foods. However, we could say this about nearly all our contemporary crop cultivars. Europeans have only had tomatoes for around 500 years.

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10 Answers

6
7b4641bc7c610f2944da66f79cc3378a

on October 28, 2012
at 06:51 PM

What if you exclude tomatoes from your menu, let's say for a month, and then share your results here with us? :)

5
1da74185531d6d4c7182fb9ee417f97f

on October 28, 2012
at 07:10 PM

N=1 Go without for 4-6 weeks and report back. Your results may vary.

2
0a9ad4e577fe24a6b8aafa1dd7a50c79

on October 28, 2012
at 09:43 PM

Tomatoes are not commonly eaten in traditional cultures. Tomatoes are a relatively recent addition to the human diet. Tomatoes used to be grown as decoration around the home or garden, in the same manner as a rose or fern.

I can't pinpoint exactly why, but nightshades (I never eat white potatoes, but I do enjoy tomatoes) cause me minor joint issues.

A7768b6c6be7f5d6acc76e5efa66464c

on October 29, 2012
at 12:34 PM

True if you don't consider the indigenous people of mesoamerica as representing "ttraditional cultures." But domestication/cultivation there may only have occurred 2,500 or so years ago, which isn't that long compared to many traditional foods. However, we could say this about nearly all our contemporary crop cultivars. Europeans have only had tomatoes for around 500 years.

2
47edf681280750c3712a3a56f2eae33b

on October 28, 2012
at 07:14 PM

Certain people claim a sensitivity to them, other's do not.

2
77877f762c40637911396daa19b53094

(78467)

on October 28, 2012
at 06:42 PM

Yes, I'd really like to get a consensus on this once and for all

1
77877f762c40637911396daa19b53094

(78467)

on January 19, 2013
at 06:24 PM

What we've found is, that vegetables generally have protective mechanisms which attempt to deter animals from eating them. Even broccoli, kale and cauliflower, three seemingly innocent superfoods, all have goitrogens (which effect thyroid function).

What eating healthy actually entails differs strongly from conventional wisdom: eating healthy means choosing the foods which are the LEAST harmful for you in contrast to eating foods which are the "most beneficial". I'm sure we could find reasons for you not to eat just about any food, what it comes down to however is eating those which are optimal for our health.

Despite the bad press given to tomatoes on this site, I'm going to have to put them in a good light:

Tomatoes promote clear skin. http://www.livestrong.com/article/495805-tomatoes-acne/

(Notice how this reference utilizes a study by Loren Cordain!)

74786bbe8254844304a33943290c4d6d

(1663)

on January 19, 2013
at 09:35 PM

Chris Kresser has said that he hasn't seen any serious detriment to thyroid function whilst eating goitrogenic veggies in his practice. Also, cooking them helps.

1
D8a1aa2a5add1921f69e16e742d62b83

on January 19, 2013
at 05:56 PM

Here's a thought: As far as I know, pre-colombian native American populations had similar average population heights to Paleolithic people (about 5'9"). This is commonly viewed as a general indicator of health in an ancient population. Would this be possible if new world foods like nightshades were causing chronic inflammation and gut irritation? It should be noted that modern people have similar average heights, but that's probably because of modern medical technology.

9f54852ea376e8e416356f547611e052

(2957)

on January 19, 2013
at 11:20 PM

It should be noted that there's no consensus on which factors determine average height of a population - but the hypothesis you presented is sound.

1
77877f762c40637911396daa19b53094

(78467)

on October 28, 2012
at 06:39 PM

I'm wondering this to

0
4afe86ce916a499180364969856f95d0

on January 19, 2013
at 09:17 PM

I have read that the reactions can be because of having an intolerance to the natural nicotine in night shades. Google nicotine and tomatoes and you will find all sorts of information.

0
Fa13dc0538ff9b5c3a1518b92fa7a41b

on January 19, 2013
at 08:05 PM

From what I understand about nightshades, they are a problem specifically if you have autoimmune problems: http://www.thepaleomom.com/2012/08/the-whys-behind-autoimmune-protocol.html.

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