I’m not doubting/debating that he’s got something going on. But it’s a fact that blood testing for food allergies is unreliable, and numbers in the low 100s are not allergies. it’s also a known fact that Nextmune, who I assume did the test, says that nearly every horse is allergic to flax and oats, and not far behind is cottonseed. And when you think about it how many horses have ever actually been exposed to cottonseed?
If you tested during a “flare” of insect reactions, then his whole body is hyper-reactive and you’ll get a lot more “hits” that still aren’t allergies.
You can certainly remove those things. The simplest way is to do a full elimination diet - forage only for 2-3 weeks. If he gets better, and absolutely nothing else changes, then you start adding one thing back at a time, and if absolutely nothing else changes, then you can feel more confident it’s an actual food allergy.
The reason I asked if you could post the whole results, was that if there are a lot of low hits, then you may have a leaky gut situation. And yes, removing the things that are inappropriately crossing the intestinal barrier (the definitely of leaky gut) will reduce or remove symptoms, but it’s still not an allergy, and you haven’t resolved the underlying cause.
Pico_Banana has some good options of allergy support things to try. Marine-based Omega 3 products are an alternative to flax, and if he’s eating just hay, he really does need O3 not just for basic healthy, but to also support allergy issues.
