
My son is allergic to green peas and his reactions are life threatening. He is intolerant to a lot of other foods as well, and as we’ve found out, so am I.
We changed our family diet some years ago now, for the sake of us all. I used to cheat, but I also kept track of my diet, and after a while my wife noticed that when I ate certain foods I would become very depressed 2 days later. (Almost to the hour.) Unfortunately chocolate was the worst! She mentioned this bizarre discovery to our allergy specialist who said “Yes, food does cause mood swings!”
Food allergies and intolerances are very different things. Food allergies trigger the immune system, and the sufferer’s body reacts, for example with swelling or hives. Food intolerance is about thresholds. You can eat the foods that you’re intolerant to, but you’ll have a reaction if you go over your threshold. Food intolerance is very common; much more than people seem to realize.
The reactions can be amazing. In me the intolerance causes depression. My wife feels bloated and lethargic. The kids get aggressive and irritable. Other people report anxiety, panic attacks, suicidal thoughts, obsessive compulsive behaviour and even social phobias. Migraines and stomach aches are also common.
So, avoid the colours, flavours and preservatives! Yes. But normal fresh foods also contain natural chemicals like salicylates, amines and glutamates. Many people eat these in abundance, and even on their own they can cause plenty of problems. The chocolate I eat may be free of colors, flavors and preservatives, but it is very high in natural amines which causes me plenty of grief.
If you eat problem foods every day, and take the symptoms of intolerance for granted, then you may be missing something that is key to your mental health. If this could be you, then it is really worth following it through.
Our family kept to a strict chemical-free diet for some years to remove the problem foods. A common way for an allergy specialist or dietician to test for the culprits is to prescribe a strict chemical free diet for a few weeks until symptoms disappear. They will then give a series of oral “challenge tests” to see which food chemicals and artificial additives are causing problems.
I once took aspirin as a challenge, and it won. Apparently aspirin is pure salicylate, and it sent me out of my tree.
More information:
RPAH Allergy Unit
Food and Mood Guide

Dr Shock 28 Jan 2008 @ 6:15 am
You’re back, great. If you eat chocolate what kind of chocolate do you eat. Is there a special kind with no colors etc?
Regards Dr Shock
Yael 28 Jan 2008 @ 8:38 am
Does chocolate allways caused this mood?
can it cauuse the opposite reaction??
Very interesting article,thanks
:)
Karen 28 Jan 2008 @ 10:55 am
That is great that you have such an intimate knowledge of the relationship between your body and food. I’ve just recently started a food diary to try and make some connections myself. Timely post for me, thanks.
james 28 Jan 2008 @ 6:16 pm
I try not to eat chocolate at all, but so do many people unsuccessfully. In Australia most plain milk and dark chocolates are free of artificial colours, flavours and preservatives. If there is dried fruit in it then there will be preservatives as well. There is only one type, Nestle Aero, that is produced in a factory that doesn’t also produce nut products. This is the only that my son can eat due to a nut allergy.
For me chocolate is OK in very small quantities. It’s a threshold problem. 2 pieces of chocolate cake and I’m out of action for a week. Not sure about the opposite reaction. The sugar hit can give you a short-term bounce, but not lasting energy like from complex carbohydrates.
james 28 Jan 2008 @ 6:18 pm
Good luck to you, Karen. Unfortunately the culprit foods tend to be the tastiest, since they are highest in the natural food chemicals.
This is a good introduction from a cookbook that we use, or fail to use:
http://www.cs.nsw.gov.au/rpa/allergy/resources/foodintol/ffintro.cfm
Douglas Cootey 2 Feb 2008 @ 3:03 am
Excellent article. My wife has been wondering if one of our girls is having a food allergy (suspect: milk), so I’ll point her in your direction so she can read up on it. Thanks.
Douglas
Alicia Sparks, NAMI Affiliation Leader 3 Feb 2008 @ 1:58 pm
Wow, I really had no idea about the food/mood relationship. Sure, I’ve often thought chocolate would cheer me up (haha), but I’ve never done any research about the ways foods affect our moods. Thanks for sharing!
Double The Sanity This Saturday! 9 Feb 2008 @ 4:05 am
[...] read a post this week at Finding Optimism called Food and Mood for Thought, and it may make many of you think twice about what you chow down on. Find more information at The [...]
Jenny 10 Nov 2008 @ 4:27 pm
My husband has post tramatic seizures, he is on several medications, we just heard that his diet could also be affecting his mood swings and seizuers do you have any advice.
Nov. 10, 2008
james 11 Nov 2008 @ 8:53 pm
Jenny,
I would suggest that you read Food & Mood by the UK organization Mind. It is a good introduction to a topic that we don’t know an awful lot about.
http://www.foodandmood.org/Pages/mindguide.html
The best source that I know of for info on food allergy and intolerance is the RPA Allergy Clinic here in Sydney. There is nothing on their site as far as I know specific to mental illness, but their information may help you to identify the culprit foods.
http://www.cs.nsw.gov.au/rpa/allergy/
James.