
Connection Between Asthma and IBD/GI Issues
I recently came across some information that was really interesting to me, and relevant to my cat's case. Just wanted to share here in case it helps anyone else.
Shadow (2 y/o male) has suspected IBD, due to a history of GI issues (though he has not had an ultrasound or biopsy). He came to me at 6 months old with a nasty Giardia infection, which took multiple rounds of treatment to clear. His loose stool persisted off and on for several months, varying in severity. Certain foods seemed to trigger it more: anything extremely high in protein, and anything with fish. He improved quite a bit when put on a prescription diet, Hill's Gastrointestinal Biome. However, after a couple months on this diet, he started developing what seemed to be motility issues: frequent vomiting and regurgitation. Around the same time, I started noticing what seemed to be asthma attacks 2-4 times per month, but this seemed to me unrelated to his GI symptoms.
Switching to a hydrolyzed diet, Hill's z/d, decreased the vomiting significantly. He was still prone to "scarf and barf", though, so I started giving him 10 tiny meals per day with an auto feeder and a few small wet food snacks. A couple of months ago, his frequency of hairballs and asthma attacks/coughing fits started increasing. Sometimes both would happen multiple days in a row. I booked an appointment with the vet, and in the meantime I started researching whether there is a connection between IBD and asthma.
I already knew that frequent hairballs are often a symptom of IBD; this was my first IBD cat's only symptom for years, and I still feel bad for being oblivious to that for years. I also came across this video by a vet, which is the first time I've heard a discussion of hairballs as a symptom of asthma. I also found some journal articles discussing the connection between the respiratory system and the gut:
Respiratory dysbiosis in cats with spontaneous allergic asthma
I discussed this with Shadow's new vet, a cat specialist who has been practicing for 30+ years, and she said she has indeed witnessed this connection in practice. In her experience, when a cat's asthma is treated, their digestion often improve as well. She prescribed a Flovent inhaler, and also said that some of her clients have had success with natural herbal tincture remedies. Her other suggestions, I had already implemented (switching to low dust litter, air purifiers, not burning candles or incense).
I ordered the medication, as well as the supplement she suggested, but something dawned on me: Shadow hasn't had an asthma attack, hairball or scarf and barf episode in over two weeks. The only recent change is that we moved to a new apartment. Our previous place was in the heart of the city, fairly close to a highway, which I was horrified to discover is terrible for your health and can actually cause asthma. Air filters simply cannot get all of the pollutants. It now seems quite likely to me that this was the major trigger for his issues all along. I'm glad I'll have the meds on hand now in case of flair-ups or if his condition worsens, but I'm thankful things have improved for now. I may even try transitioning him off the hydrolyzed food at some point, though I'm on the fence about that.
Tl;dr - If your cat has digestive issues, including hairballs, and also coughs a lot - it's likely asthma. Treating that could quite possibly resolve digestive symptoms as well.