Overview
Malabsorption syndrome is a group of conditions where the small intestine cannot properly absorb nutrients from food. Causes include IBD, EPI, lymphangiectasia, infections, and small intestinal bacterial overgrowth (SIBO). Pets eat well but remain thin, malnourished, and deficient in essential vitamins and minerals. Diagnosis requires intestinal biopsies or specific blood tests.
Symptoms to Watch For
- Weight loss despite normal or increased appetite
- Chronic diarrhea, often pale or fatty
- Poor coat quality and muscle wasting
- Edema (swelling) in severe cases from protein loss
- Vitamin deficiency signs: poor wound healing, weakness
How Nutrition Helps
Highly digestible, low-fat diets reduce the workload on damaged intestines. MCT (medium-chain triglyceride) oil provides easily absorbed fat calories. Enzyme supplementation helps if EPI is the cause. Vitamin and mineral supplementation is often necessary since normal absorption is impaired — especially B12, fat-soluble vitamins (A, D, E, K), zinc, and iron.
How Activity Helps
Gentle exercise maintains muscle mass. Avoid intense activity until weight and nutrition status stabilize.
Prevention Tips
- Investigate chronic diarrhea early — don't wait months
- Feed highly digestible, low-residue diets
- Work with your vet on appropriate supplementation
- Monitor weight regularly
- Consider B12 injections if oral absorption is impaired
Breeds at Higher Risk
Yorkshire Terriers (lymphangiectasia), German Shepherds (SIBO), Soft-Coated Wheaten Terriers, and Norwegian Lundehunds.