Sand Accumulation in Horses
Helping Horse Owners Understand and Manage Sand Accumulation
Sand can gradually build up within a horse’s digestive system, sometimes without causing obvious problems at first. In larger amounts it can irritate the intestine, interfere with normal digestive function and contribute to diarrhoea, weight loss or potentially serious colic.
Understanding how horses ingest sand and how to reduce their exposure is an important part of prevention.
Suspect colic? Contact your veterinary surgeon immediately.
⚡ Quick Facts
- Horses usually ingest sand accidentally while grazing or eating from sandy or bare ground.
- Sand commonly settles within the large colon.
- Small amounts may pass naturally, but repeated ingestion can allow larger accumulations to develop.
- Signs can include loose droppings, recurrent colic, poor condition or reduced performance.
- Some horses carrying a significant amount of sand show few obvious signs.
- Reducing further sand intake is an essential part of management.
- Significant accumulation should be assessed and treated under veterinary guidance.
What Is Sand Accumulation?
Horses living or grazing on sandy soils can swallow small quantities of sand while eating.
Normally, some of this material passes through the digestive system in the droppings. Problems arise when the amount being swallowed exceeds the horse’s ability to remove it effectively.
Sand can then collect within the intestinal tract, particularly the large colon.
A substantial accumulation may irritate the intestinal lining, alter normal movement of the gut or form a heavy mass capable of contributing to an impaction.
Veterinary literature commonly describes disease associated with this build-up as sand enteropathy.
How Do Horses Swallow Sand?
Sand ingestion is usually accidental.
One of the most common situations is a horse eating hay or concentrate feed directly from sandy ground. As the horse picks up the final pieces of food it can repeatedly swallow small quantities of soil or sand with them.
Horses may also ingest sand when:
- grazing very short pasture;
- pulling grass up by its roots;
- grazing sparse paddocks where there is considerable exposed soil;
- eating spilled feed from the ground;
- living in dry or drought-affected conditions;
- deliberately eating soil or sand.
The problem therefore isn’t necessarily one large exposure.
Small amounts swallowed repeatedly over weeks or months can gradually become significant.
[GRAPHIC 1 — HERO GRAPHIC]
Sand Accumulation: How Sand Reaches the Horse’s Large Colon
Purpose: A strong owner-education hero graphic explaining the complete process at a glance.
Suggested illustration:
A horse grazing from a sparse sandy paddock on the left, followed by a simplified anatomical digestive tract showing swallowed sand travelling through the gastrointestinal system and settling along the bottom of the large colon.
Use three clearly labelled stages:
1. Sand is swallowed
Short grazing, sandy forage or feed placed directly on the ground.
2. Sand enters the digestive system
Small amounts may pass normally.
3. Repeated intake can lead to accumulation
Sand may settle within the large colon where larger quantities can cause irritation or obstruction.
Include a small warning panel:
Possible consequences
- Loose droppings
- Recurrent colic
- Weight loss
- Reduced performance
- Intestinal impaction
Footer:
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The graphic should contain enough explanation to remain understandable if saved, shared or printed without the accompanying webpage.
What Signs Might Sand Accumulation Cause?
The signs vary considerably.
Some horses with significant amounts of intestinal sand appear outwardly healthy, while others develop digestive problems.
Possible signs include:
- recurrent or unexplained episodes of colic;
- loose droppings or persistent diarrhoea;
- difficulty maintaining weight;
- reduced appetite;
- dullness or reduced performance;
- abdominal discomfort;
- changes in normal droppings.
Research and veterinary reports have particularly associated sand accumulation with colic, diarrhoea and difficulty maintaining condition.
However, none of these signs is specific to sand accumulation.
Many other digestive disorders can produce similar symptoms, which is why persistent or recurrent problems require veterinary investigation.
Can Sand Cause Colic?
Yes.
Sand may cause several different problems within the digestive system.
Its weight can affect normal movement of the large colon, while the particles themselves can irritate the intestinal lining.
If sufficient sand accumulates, it can contribute to an impaction or obstruction.
Sand-associated colic can range from relatively mild recurring discomfort to a serious intestinal emergency.
Contact your veterinary surgeon urgently if your horse shows signs of colic.
Do not attempt to treat suspected sand colic simply by giving a supplement.
How Does a Vet Diagnose Sand Accumulation?
Your vet will consider the horse’s clinical signs together with its management and likely exposure to sandy ground.
Assessment may include:
- clinical examination;
- listening to the abdomen;
- examination of droppings for sand;
- abdominal ultrasound;
- abdominal radiography where facilities allow.
Radiographs can be particularly useful because accumulated sand appears as a dense area within the lower portion of the large colon and can allow the amount present to be estimated.
Testing droppings for sand may provide useful information about exposure, but finding little or no sand in one sample does not necessarily prove that there is no accumulation within the intestine.
The whole clinical picture is therefore important.
[GRAPHIC 2]
Could Your Horse Be Swallowing Sand?
Purpose: A printable prevention/checklist graphic owners can use around their own yard.
Show six simple illustrated situations:
Higher-risk situations
Hay fed directly onto sand or bare soil
Use a feeder, tub or large clean feeding surface instead.
Very short grazing
Horses may pull plants up with soil attached.
Sparse paddocks
More soil is exposed between plants.
Picking up spilled concentrate feed
Avoid allowing horses to clean feed from sandy flooring.
Overgrazed turnout
Limited forage increases close grazing and soil ingestion.
Deliberate soil eating
Investigate persistent abnormal feeding behaviour and review management.
Bottom message:
The most effective first step is reducing the amount of sand the horse can swallow.
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Designed to work as a standalone printable yard-management reference.
How Is Sand Accumulation Treated?
Treatment depends on the amount of sand present and whether the horse is showing clinical signs.
Veterinary management may involve:
- removing the horse from further access to sand;
- fluid therapy where necessary;
- maintaining hydration of the intestinal contents;
- administration of psyllium;
- other laxative treatments under veterinary supervision;
- repeated examination or radiography to assess clearance.
Psyllium is a fibre derived from the husks of Plantago ovata. When mixed with water it forms a gel-like material and has long been used in the management of horses carrying intestinal sand.
Research has shown that, for horses with substantial accumulations, veterinary administration of psyllium together with magnesium sulphate can clear sand more effectively than either used alone.
This is veterinary treatment and should not be replicated by owners without professional advice.
Severe obstruction or cases failing to respond to medical treatment may occasionally require surgery.
What About Feeding Psyllium Regularly?
Psyllium products are commonly used in horses considered at risk of ingesting sand.
However, there is an important distinction between:
helping manage risk in an otherwise healthy horse
and
treating a horse already carrying a clinically significant sand accumulation.
A horse with recurrent colic, persistent diarrhoea, weight loss or suspected significant sand accumulation requires veterinary assessment rather than simply being placed onto a sand supplement.
Your veterinary surgeon or equine nutrition professional can advise whether routine psyllium supplementation is appropriate for your horse’s particular environment and management.
Preventing Sand Accumulation
Prevention centres on reducing how much sand the horse swallows.
Avoid feeding directly from sandy ground
Feed hay from an appropriate feeder or place it on a sufficiently large clean surface so that the horse cannot simply eat around its edges and reach the sand underneath.
Protect pasture
Avoid allowing paddocks to become severely overgrazed.
The shorter the grazing becomes, the closer the horse feeds to the soil surface.
Provide adequate forage
Horses with insufficient forage may spend more time searching close to the ground for food.
Consider where concentrate feeds are given
Feed from buckets or troughs rather than directly from the ground.
Watch known high-risk horses
If one horse repeatedly develops digestive problems in a sandy environment, discuss ongoing monitoring and preventive management with your vet.
[GRAPHIC 3]
Reducing Sand Intake — Five Practical Changes
Purpose: A simple downloadable owner action guide.
Large central heading:
Most sand-associated problems begin with repeated exposure.
Then five illustrated actions:
1. Feed forage above the sand
Use a suitable feeder, trough or large clean mat.
2. Avoid extremely short grazing
Protect pasture before horses begin grazing close to exposed soil.
3. Provide sufficient forage
Reduce the need for horses to search bare ground for food.
4. Don’t let horses clean up feed from sandy surfaces
Pick up spills where practical.
5. Know your horse’s risk
Recurrent diarrhoea, colic or poor condition deserves veterinary investigation.
Final highlighted message:
Prevention begins by stopping more sand going in.
Footer:
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The graphic should be designed so that a horse owner, yard manager or veterinary practice could print and display it independently.
Feeding and Digestive Support
Good digestive management remains important for horses at risk of sand ingestion.
This includes:
- providing adequate forage;
- ensuring constant access to clean drinking water;
- avoiding unnecessary sudden dietary changes;
- maintaining an appropriate feeding routine;
- supporting normal digestive function;
- reducing exposure to sandy feeding areas.
FreeStep Nutritional Support
JCG produces nutritional products designed to support different aspects of equine digestive health.
These products should not be presented as treatments for intestinal sand accumulation unless a product is specifically formulated and recommended for that purpose.
Where appropriate, owners can explore our:
→ Digestive Health nutritional support products
Nutritional supplements may help support the horse’s wider digestive system, but they do not replace veterinary diagnosis or treatment of sand accumulation or sand-associated colic.
When Should I Call the Vet?
Speak to your veterinary surgeon if your horse has:
- repeated episodes of colic;
- persistent or recurrent loose droppings;
- unexplained weight loss;
- difficulty maintaining condition;
- reduced appetite or performance;
- significant known exposure to sand together with digestive symptoms.
Colic is an emergency.
If your horse is currently showing signs of abdominal pain, contact your veterinary surgeon promptly rather than waiting to see whether the problem resolves.
The JCG Take-Home Message
Sand accumulation is largely a management-related digestive problem.
Horses living on sandy land do not necessarily develop sand disease, but repeated ingestion increases the risk.
The most useful measures owners can take are straightforward:
Keep feed away from sandy ground.
Avoid severely overgrazed turnout.
Provide sufficient forage.
Recognise recurrent digestive problems early.
Seek veterinary advice when sand accumulation is suspected.
Reducing the amount of sand entering the digestive system is always preferable to having to remove it later.
Related JCG Health Hub Information
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- Colic