WHAT IS BALANCE ANYWAY?
Horse people – well, people in particular – seem to be pretty obsessed with trying to make sure things are “balanced.” Be it the mouth, the hooves, the riding style, or the diet, balance is something to be unquestionably and unequivocally desired (which is, in itself, often a reason to be concerned about something).
WHAT IS A BALANCED DIET?
NOTE: In humans, you might get a bit of pushback on the need for a variety of foods, say, from lactose-intolerant folks who eschew dairy, or vegetarians who shudder at the thought of a hamburger, or those that insist that gluten is the spawn of the devil, so no wheat for them. Regardless of the philosophy and lack of balance, those folks can be healthy, too.
SO WHAT IS A BALANCED DIET FOR A HORSE?

Nutritional smorgasbord
Understanding that the “balance” references are human diets, for horses, the concept is pretty much the same thing, I think. You want your horse to get everything he needs so that his body functions healthily and that he maintains a good weight. But does that require any sort of particular attention to “balance?” Read on.
One big difference between horses and humans is that, for people, a variety of foods is usually recommended. If we look to wild horses for answers about balance, we find that horses actually eat a variety of stuff that would, by the assessment of just about any nutritionists be considered fairly “low-quality: grasses, seed heads of grasses, weeds, shrubs, bits of trees, and other plants. They eat what they can find, when and where they can find it. So, if you’re thinking that a variety of foods is what your horse needs for balance, it might be time to fire up the hedge trimmer (NOTE: I’m not suggesting that you do this). Or, you could consider some of the things people give horses around the world that may not be popular where you are (CLICK HERE).

Less nutritious – not fatal
Another thing to consider about wild horses is that they are almost undoubtedly NOT always meeting all of their nutritional needs, especially in winter. Curiously, they are also not dropping like flies from the lack of daily attention to their aluminum requirements. What they are doing is eating a lot – they have the food they forage pretty much constantly going through their digestive tract. Nobody talks about the “quality” or “balance” of the diet of a wild horse: quantity is the thing for them.
From an evolutionary perspective, it doesn’t make any sense at all that if would have to be difficult for a horse to fill its nutritional needs on those relatively poor-quality feeds that made up a “balanced” diet. I mean, if it was hard, wild horses would have just died out. Instead, they thrived. They didn’t thrive because they had some sort of sense of daily “balance” they were looking for, no, they thrived precisely because it was EASY for them to fulfill their nutritional needs.
It still is.
IF NOT VARIETY, THEN WHAT DO YOU NEED TO BALANCE?
Since a “balanced” variety of feeds doesn’t seem to be an important part of a domestic a horse’s diet, then surely the concept of
As with humans, the most important consideration when it comes to nutritional “balance” is that the horse be kept at a good weight (generally said to be where you can’t see the horse’s ribs, but you can feel them easily). To be frank, this goal seems to be considerably more challenging for some folks that others, as evidenced by the fact that obesity seems to be a bit of a problem in domestic horses, but that’s not really the horse’s fault; domestic horses eat what they are allowed to eat, and they like to eat all the time. They came up with the phrase, “Eating like a horse” for a reason.
HOW EASY IS IT FOR AN ADULT HORSE TO FULFILL ITS NUTRITIONAL NEEDS?
Well, actually, very easy. Here are some examples.
- If he’s at a good weight he’s getting enough calories
- If he eats anything green, he’s getting enough vitamin A
- It’s impossible to make a horse deficient in Vitamin C (he makes his own)
- If he sees the sun, he’ll get enough Vitamin D
- He likely gets enough Vitamin E, unless he’s constantly getting brown, low-quality forage. Even so, he can store enough Vitamin E to last six months or so (CLICK HERE)
- If the feed is decent quality, he’ll get enough protein
- Most decent quality forages have enough vitamins and minerals
- If he’s getting enough forage, he’ll get enough fiber
- Horse feeds normally contain plenty of salts (also known as electrolytes)
- He will need to have access to water
SO WHAT ABOUT “RATION BALANCERS?”
Oh, right. I mean, I guess they’re fine. Ration “balancers” or vitamin and mineral supplements or fortified nutritional products don’t seem to be likely to hurt your horse; at least there are no widespread reports of harm. “Ration balancers” are given along the same rationale as are vitamin and mineral supplements in people, a sort of “nutritional insurance” (also known as, “Just in case”).
- The global vitamin supplements market size was valued at $47.9 billion in 2021, and is projected to reach $98.6 billion by 2031, according Allied Market Research (CLICK HERE) I don’t know of any equivalent research in horses, but I’d bet that it’s a lot.
- In humans, vitamin and mineral supplements tends to lead to excessive intakes of vitamins and minerals (“Out of balance” in the wrong direction, I think). In fact, I did a study showing this in several horse supplements about a bit more than a decade ago (CLICK HERE).
- In humans, several studies have evaluated the link between vitamin and mineral supplements and many different health outcomes, including cancer, heart disease, osteoporosis, pulmonary diseases, and mortality. Most have not found an effect of vitamin and mineral supplement use on any of the health outcomes measured.
Again, when it comes to humans, according to the US government’s 2020–2025 Dietary Guidelines for Americans, “Because foods provide an array of nutrients and other components that have benefits for health, nutritional needs should be met primarily through foods. … In some cases, fortified foods and dietary supplements are useful when it is not possible otherwise to meet needs for one or more nutrients (e.g., during specific life stages such as pregnancy.” If you’ve got some time, and you really want to take a deep dive into what is known about vitamin and mineral supplements in humans (CLICK HERE)
HERE’S WHAT I’D LIKE YOU TO THINK ABOUT: A “HEALTHFUL” DIET