The Secret to Healthy Horses? Keep it Simple! - REVISED AND EXPANDED

By Juliet M. Getty, Ph.D.

We all know horses like this. They radiate health. Their muscles are well developed, their coats gleam, their hooves are strong, their digestion is sound, their metabolism works efficiently, and their immune systems seem to shrug off illness. They aren't merely surviving, they're thriving.

So, what makes these horses different?

Traditionally, we search for answers by studying disease. We examine overweight horses to understand obesity, horses with laminitis to understand metabolic dysfunction, and horses with digestive disorders to understand gastrointestinal disease. While this research is valuable, it tells us how disease develops, not necessarily how health is created.

Perhaps we should spend more time asking a different question: What do healthy horses experience every day?

The answer is surprisingly simple:

Feed for health, not for excess calories

Obesity is one of the greatest health challenges facing today's horse. It develops when calorie intake consistently exceeds energy needs, particularly when concentrated feeds are added to an already adequate forage diet.

Excess body fat is far more than a cosmetic issue. Fat tissue produces inflammatory compounds that interfere with normal metabolism, increase stress on joints and hooves, and contribute to insulin dysregulation and laminitis.

Maintaining a healthy body condition begins with respecting the horse's natural design rather than simply restricting calories.

Never restrict forage

Forage is not simply another feed -- it is the foundation of the horse's digestive system. The equine gastrointestinal tract is designed for a continual flow of forage throughout the day and night. When this steady flow is interrupted, digestion becomes compromised and the risk of ulcers, colic, behavioral problems, and even weight gain increases.

Ironically, one of the most common weight-loss strategies -- restricting forage -- often works against the horse's biology. In the wild, forage naturally becomes scarce during winter. As part of this seasonal adaptation, horses temporarily become less insulin sensitive, allowing them to conserve body fat until spring forage returns. This "winter metabolism" is a normal survival mechanism and is followed by renewed grazing and increased metabolic activity.

When we repeatedly restrict forage in domesticated horses, we may unintentionally recreate this winter survival signal without providing the natural seasonal reset. Instead of encouraging fat loss, the body shifts toward conserving energy. When this is combined with diets high in sugar and starch, the result can be a metabolism that favors continued fat storage rather than healthy weight regulation.

Reduce stress whenever possible

Stress affects far more than behavior. It influences hormone production, immune function, inflammation, digestion, and metabolism. A chronically stressed horse is more likely to develop ulcers, digestive disturbances, allergies, inflammatory conditions, poor hoof quality, skin problems, obesity, insulin dysregulation, and a diminished ability to fight infection.

Many common management practices create unnecessary stress simply because they prevent horses from living according to their natural instincts. Horses should have continual access to forage, room to move freely, opportunities to socialize, and the ability to make normal choices throughout the day. They should not be forced to wait for forage (hay and/or pasture) according to our schedules or be prevented from expressing natural behavior through unnecessary confinement or restrictive feeding devices.

Companionship is especially important. Horses are herd animals whose sense of security depends upon the presence of other horses. Living with at least one compatible companion allows them to relax, rest more deeply, and digest their food more efficiently.

Keep horses moving

Movement is not simply exercise -- it's a biological necessity. Every system in the horse's body depends upon regular movement. It stimulates normal intestinal function, strengthens hooves, lubricates joints, maintains muscle, supports circulation, improves insulin sensitivity, and helps regulate body weight.

Confinement, on the other hand, is physically and mentally stressful. A horse's natural response to uncertainty is movement, and when that ability is limited, both physical and emotional health suffer. If stall housing is unavoidable, provide as much turnout and voluntary movement as possible every day.

Fill the nutritional gaps

Fresh pasture naturally supplies a wide variety of nutrients from different grasses, legumes, edible weeds, shrubs, flowers, and trees. Hay cannot fully duplicate this diversity. Drying and storing forage to produce hay, reduces many nutrients, making supplementation necessary for horses living primarily on hay.

A balanced vitamin and mineral supplement helps replace nutrients lost during hay production. Essential omega-3 fatty acids must be in the diet daily -- they reduce inflammation, support hormonal balance, and reinforce a healthy immune function. High-quality protein from a variety of sources supplies the amino acids needed to build and repair tissues, maintain blood proteins, and support every organ system.

And don't forget the basics: provide salt and plenty of clean, fresh water.

Meet your horse's changing needs

As horses age, their nutritional and physical requirements change. Maintaining regular movement helps preserve muscle mass and joint function. Adequate high-quality protein, omega-3 fatty acids, vitamin C, and appropriate vitamins and minerals help support aging tissues.

Regular dental care becomes increasingly important, and routine blood work can detect changes in liver or kidney function before they become serious.

Older horses also produce less saliva, making it beneficial to moisten their feed and offer meals at ground level to improve chewing and reduce the risk of choking.

Continue learning

The more you understand how the horse's body is designed to function, the easier good management becomes. Learning how the digestive system works, why continual forage is essential, how stress affects metabolism, and how nutrition supports every body system allows you to make decisions that work with your horse's biology rather than against it.

Keep it simple

Modern horse care has become increasingly complicated. We often micromanage every aspect of our horses' lives while overlooking the basic needs that have sustained horses for thousands of years. Fresh air. Clean water. Continual access to forage. Freedom to move. Companionship. Balanced nutrition. These are the foundations of lifelong health.

When we stop trying to outsmart nature and instead support the horse's natural design, remarkable things happen. Healthy weight becomes easier to maintain, digestion improves, the immune system functions more effectively, and horses enjoy longer, healthier, more comfortable lives.

Sometimes the secret to healthy horses isn't adding more. It's getting back to the basics.

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For Permission to Reprint

For permission to reprint this article, in part or in its entirety, or arrange for a private consultation, please contact Dr. Getty directly at gettyequinenutrition@gmail.com.