March 28, 2012
This plant-based protein in all its many forms is an extremely common ingredient in low quality pet food. It contains phytoestrogens that can disrupt your pet's endocrine system. It contains substances that block absorption of minerals as well as the enzymes required for digestion. It's linked to a variety of GI disturbances, including bloat. It can cause blood sugar spikes, thyroid damage and seizures. Just say no to soy in your pet's food.