53: The definition of toxicity and what it means for your horse
We are focusing on toxicity today. Toxicity is one of the leading causes of equine disease. When the toxic load of horses exceeds what they can process, it becomes hard for their tissues to be healthy, their organs to function as they should, and their body systems to work together to sustain good health. Today, I scratch the surface of the vast and complex topic of toxicity, giving you a little food for thought. Since this is a massive subject, I will likely revisit it and dive deeper into some of the points we cover today in future episodes. Understanding Toxicity in Horses Toxicity refers to the degree to which a substance can harm cells, tissues, organs, or entire systems. For horses, toxicity often accumulates gradually, influencing their health over time. Genetic makeup, nutrition, and environmental exposure are all factors that determine how well a horse can handle toxins. Well-nourished horses with good constitutions and minimal exposure to harmful substances are generally more resilient. Yet they can also struggle as they age, particularly between 14 and 16 years, when signs of imbalance often emerge. Early Signs of Toxicity The initial effects of toxicity can be subtle and easy to overlook. A horse may develop a dull coat, cracked hooves, or irregular shedding patterns. Subtle changes like stiffness, swelling, joint discomfort, a weakened immune system, or slow recovery from illness could also indicate that the body struggles to handle its toxic load effectively. Key Sources of Toxicity Environmental chemicals in feed, hay, and waterFertilizers, preservatives, and additivesPathogens, like bacteria, viruses, and parasites- especially in horses with weakened immune systems Dietary imbalances Dietary imbalances are another major factor contributing to poor equine health. Excess sugar or protein can stress the body and lead to inflammation, metabolic issues, and poor gut health, and a diet heavy in oils can disrupt the gut microbiome. Acidity Acidity in the body often results from an imbalanced diet, leading to conditions like leaky gut, systemic inflammation, and joint issues. Hormonal imbalances, such as prolonged high cortisol or insulin levels, also cause significant damage over time, contributing to tissue breakdown, laminitis, and immune dysfunction. Antioxidants Antioxidants are crucial for combating free radicals, the unstable molecules that damage cells and DNA. Free radicals naturally occur during metabolic processes but increase with high toxic loads. Without sufficient antioxidants to neutralize them, free radicals can accelerate aging, weaken the immune system, and cause long-term damage. The Cumulative Effect of Toxicity Even though toxins seldom cause immediate harm, they accumulate over time. A horse that has consumed feed with additives, dealt with multiple infections, or been on long-term medications may eventually show signs of toxicity. The cumulative effect often leads to nutritional deficiencies, compromised immunity, and declining health. Strategies for Reducing Toxicity Eliminate unnecessary supplements and observe how the horse responds to a more natural diet. Prioritize high-quality feeds and hay with minimal additives, and avoid excessive sugar, protein, or oils, as they can disrupt metabolic health and the gut microbiome in horses. Address pathogens and infections promptly. Support detoxification with bioavailable nutrients to restore reserves and help the body manage its toxic load effectively. Final Thoughts Toxicity develops slowly. Understanding the sources and taking steps to minimize exposure will allow you to help your horse maintain...
