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| Meta Title | 11 causes of loose stools: How to treat and home remedies |
| Meta Description | A look at loose stools, which are unusually watery bowel movements. Find out about the causes and the role of diet in the consistency of bowel movements. |
| Meta Canonical | null |
| Boilerpipe Text | Loose stools are unusually watery bowel movements. Causes may include gastrointestinal infections, ulcerative colitis, and thyroid problems, among others.
Loose stools may occur after eating or at other points in the day. They may be softer than a person’s usual stools. They may also be watery, mushy, or shapeless and can have a strong, foul odor.
Diarrhea is when a person experiences
three or more
loose and watery stools through the day. That said, some people may experience loose stools without having diarrhea.
Some people may also have acute
diarrhea
, which is when they experience loose and wet stools for up to
14 days
.
Dietary trends
Certain
foods
, drinks, and supplements could increase the likelihood of loose stools or diarrhea.
This could happen if the small intestine cannot properly digest large amounts of certain sugars efficiently.
For example,
sugar alcohols
, which are in many fruits, vegetables, and artificial flavorings, may have a
laxative effect
. Difficulties with sugar digestion could increase pressure and water in the colon.
Diets high in lactose, a sugar found in milk-based products, may also cause loose stools. When lactose is malabsorbed by the small intestine, it may be
fermented in the gut microbiota
and cause diarrhea, abdominal pain, and bloating.
Loose stools may also be due to diets high in:
alcohol
rich and spicy foods
coffee
magnesium
Infections or food poisoning
Viruses
, bacteria, or
parasites
may cause
inflammation
in the stomach and intestines, which can lead to loose stools.
Infections from viruses are the most
common cause
of loose stools and acute diarrhea.
For example,
norovirus
is responsible for nearly
58%
of foodborne illnesses in the United States and affects 19 to 21 million people.
Rotavirus
and
viral gastroenteritis
are two more viruses that may also cause symptoms such as:
diarrhea
abdominal pain
nausea
vomiting
Salmonella
Campylobacter
Shigella
E. coli
Clostridium difficile
Some people may experience ongoing bouts of loose and watery stools, known as
chronic diarrhea
. This lasts longer than
four weeks
, is typically due to an underlying health condition, and may require treatment.
Irritable bowel syndrome
Irritable bowel syndrome (IBS)
is a chronic condition affecting the digestive system. According to the American College of Gastroenterology, between
10% and 15%
of people in the United States have IBS. It can affect people of any sex but is more common in women.
Loose stools and diarrhea are
common
symptoms of IBS. Other symptoms may include:
abdominal pain, bloating, or gas
constipation
indigestion
Ulcerative colitis
Symptoms of UC include:
loose stools and diarrhea
bloody stools
with
mucus
frequent bowel movements
fatigue
rectal bleeding
unintentional weight loss
Crohn’s disease
Crohn’s disease
is a long-term condition that affects around
1 million people
in the United States. It occurs when the lining of the digestive system becomes inflamed.
Crohn’s disease may cause diarrhea and loose stools, as well as:
abdominal pain
blood in fecal matter
appetite loss
unintentional weight loss
fatigue
Celiac disease
Celiac disease
is an autoimmune condition that causes inflammation of the small intestine. Foods with
gluten
, which is in wheat, barley, and rye, trigger symptoms.
This condition affects nearly
2 million people
in the United States.
Symptoms of celiac disease include:
diarrhea and loose stools
abdominal pain, bloating, or gas
indigestion
skin irritation
fatigue
weight loss
Bile acid malabsorption
Several
liver
and
gallbladder
disorders may impair the proper function of bile, which helps properly break down fats in the intestines. This may occur in people with
gallstones
or liver
cirrhosis
.
Overactive thyroid (hyperthyroidism)
An
overactive thyroid
is when the thyroid gland produces too many hormones, interfering with its function.
This may cause loose stools and diarrhea, as well as:
mood instability
difficulty sleeping
swelling around the neck
erratic body temperature
irritability
weight loss
trembling
Chronic pancreatitis
Chronic pancreatitis
is an inflammatory condition that affects the pancreas and could impair the proper breakdown of fats, starches, and proteins.
Symptoms of chronic pancreatitis may include:
loose stools and diarrhea
abdominal pain
nausea
vomiting
Cystic fibrosis
Cystic fibrosis
is a long-term condition where mucus builds up in the
lungs
and digestive system. This may interfere with digestion and cause symptoms like:
diarrhea and loose stools
recurring chest infections
shortness of breath
difficulty gaining weight
a persistent cough
Dumping syndrome (rapid gastric emptying)
Dumping syndrome
is a condition where food moves from the stomach to the bowel too quickly. It
often
occurs after
weight-loss surgery
and may cause symptoms like:
loose stools and diarrhea
abdominal pain
nausea
vomiting
dizziness
abnormal heartbeat
Infrequent cases of loose stools do not typically require medical treatment. However, multiple cases may cause
dehydration
and
malnutrition
.
The following
home remedies
may help a person manage loose stools due to dietary trends, infections, or food poisoning:
dietary changes, such as foods that are soft, bland, and low in fiber
anti-diarrhea medication, such as loperamide (
Imodium
)
staying hydrated
consuming
probiotics
Loose stools that do not improve after
48 hours
require medical attention. This may be a sign of a more serious medical condition and may worsen without treatment.
Treatment for chronic conditions may include prescription medications,
antibiotics
, long-term dietary changes, or hospital treatment.
In some cases, there are no available cures for the underlying condition, but treatment may help people manage their symptoms.
People with chronic conditions can work with a doctor to manage their symptoms and prevent complications.
Loose and wet stools can occur due to dietary factors and infections. If loose stools are an ongoing issue, a person may have an underlying health condition.
Infrequent loose and wet stools are
most commonly
due to certain foods and drinks, or viruses, bacteria, and parasites.
Loose and wet stools may occasionally happen after eating certain foods.
However, it is important to get medical attention if someone experiences diarrhea or bloody diarrhea and abdominal pain for more than
48 hours
.
A person’s diet can cause them to have loose stools regularly. However, if daily loose stools are a change in bowel habits, then this might indicate an infection. It is best to contact a doctor if loose stools persist.
In most cases, infrequent loose stools will subside within a few days without treatment or with home remedies.
It is important to distinguish between loose stools that occur infrequently and those that are chronic. Loose stools that persist for over 48 hours may indicate a more serious underlying condition that will require immediate medical attention. |
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# What are the causes of loose stools?

[Medically reviewed]() by [Cynthia Taylor Chavoustie, MPAS, PA-C]() — Written by [Aaron Kandola]() — [Updated on April 28, 2025]()
- [Infrequent loose stools](https://www.medicalnewstoday.com/articles/320869#infrequent-loose-stools)
- [Chronic loose stools](https://www.medicalnewstoday.com/articles/320869#chronic-loose-stools)
- [Home remedies](https://www.medicalnewstoday.com/articles/320869#home-remedies)
- [FAQ](https://www.medicalnewstoday.com/articles/320869#faq)
- [Summary](https://www.medicalnewstoday.com/articles/320869#summary)
Loose stools are unusually watery bowel movements. Causes may include gastrointestinal infections, ulcerative colitis, and thyroid problems, among others.
Loose stools may occur after eating or at other points in the day. They may be softer than a person’s usual stools. They may also be watery, mushy, or shapeless and can have a strong, foul odor.
Diarrhea is when a person experiences [three or more](https://www.ncbi.nlm.nih.gov/books/NBK448082/) loose and watery stools through the day. That said, some people may experience loose stools without having diarrhea.
## [Cause of infrequent loose stools]()

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It is [not unusual](https://www.ncbi.nlm.nih.gov/books/NBK373090/) to occasionally have loose stools after eating. They may occur due to dietary trends, [infections](https://www.medicalnewstoday.com/articles/196271), or [food poisoning](https://www.medicalnewstoday.com/articles/154555).
Some people may also have acute [diarrhea](https://www.medicalnewstoday.com/articles/158634), which is when they experience loose and wet stools for up to [14 days](https://www.ncbi.nlm.nih.gov/books/NBK448082/).
### Dietary trends
Certain [foods](https://www.medicalnewstoday.com/articles/318879), drinks, and supplements could increase the likelihood of loose stools or diarrhea.
This could happen if the small intestine cannot properly digest large amounts of certain sugars efficiently.
For example, [sugar alcohols](https://www.medicalnewstoday.com/articles/320901), which are in many fruits, vegetables, and artificial flavorings, may have a [laxative effect](https://www.mdpi.com/2072-6643/13/6/2029). Difficulties with sugar digestion could increase pressure and water in the colon.
Diets high in lactose, a sugar found in milk-based products, may also cause loose stools. When lactose is malabsorbed by the small intestine, it may be [fermented in the gut microbiota](https://karger.com/anm/article-pdf/73/Suppl.%204/30/2230687/000493669.pdf) and cause diarrhea, abdominal pain, and bloating.
Approximately [36%](https://www.niddk.nih.gov/health-information/digestive-diseases/lactose-intolerance/definition-facts) of people in the United States have [lactose malabsorption](https://www.medicalnewstoday.com/articles/180120).
Loose stools may also be due to diets high in:
- [alcohol](https://www.medicalnewstoday.com/articles/319165)
- rich and spicy foods
- [coffee](https://www.medicalnewstoday.com/articles/270202.php "Health benefits and risks of drinking coffee")
- [magnesium](https://www.medicalnewstoday.com/articles/286839.php "Why do we need magnesium?")
### Infections or food poisoning
[Viruses](https://www.medicalnewstoday.com/articles/do-i-have-a-stomach-virus-or-food-poisoning), bacteria, or [parasites](https://www.medicalnewstoday.com/articles/220302) may cause [inflammation](https://www.medicalnewstoday.com/articles/248423.php) in the stomach and intestines, which can lead to loose stools.
Infections from viruses are the most [common cause](https://www.ncbi.nlm.nih.gov/books/NBK448082/) of loose stools and acute diarrhea.
For example, [norovirus](https://www.medicalnewstoday.com/articles/179107) is responsible for nearly [58%](https://www.cdc.gov/norovirus/data-research/) of foodborne illnesses in the United States and affects 19 to 21 million people. [Rotavirus](https://www.medicalnewstoday.com/articles/177104) and [viral gastroenteritis](https://www.medicalnewstoday.com/articles/acute-gastroenteritis-symptoms) are two more viruses that may also cause symptoms such as:
- diarrhea
- [abdominal pain](https://www.medicalnewstoday.com/articles/318286)
- [nausea](https://www.medicalnewstoday.com/articles/what-causes-nausea)
- [vomiting](https://www.medicalnewstoday.com/articles/vomiting)
Bacteria are also responsible for [foodborne illnesses](https://www.medicalnewstoday.com/articles/154555), such as:
- [Salmonella](https://www.medicalnewstoday.com/articles/160942)
- Campylobacter
- Shigella
- [E. coli](https://www.medicalnewstoday.com/articles/68511)
- [Clostridium difficile](https://www.medicalnewstoday.com/articles/172329)
## [Causes of chronic loose stools]()
Some people may experience ongoing bouts of loose and watery stools, known as [chronic diarrhea](https://www.medicalnewstoday.com/articles/319995). This lasts longer than [four weeks](https://www.aafp.org/pubs/afp/issues/2020/0415/p472-s1.html), is typically due to an underlying health condition, and may require treatment.
### Irritable bowel syndrome
[Irritable bowel syndrome (IBS)](https://www.medicalnewstoday.com/articles/37063.php "What is irritable bowel syndrome (IBS)?") is a chronic condition affecting the digestive system. According to the American College of Gastroenterology, between [10% and 15%](https://gi.org/topics/irritable-bowel-syndrome/#tabs2) of people in the United States have IBS. It can affect people of any sex but is more common in women.
Loose stools and diarrhea are [common](https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/symptoms/) symptoms of IBS. Other symptoms may include:
- abdominal pain, bloating, or gas
- [constipation](https://www.medicalnewstoday.com/articles/150322.php "What to know about constipation")
- [indigestion](https://www.medicalnewstoday.com/articles/163484.php "What to know about indigestion or dyspepsia")
**»Learn more:**[10 symptoms of IBS](https://www.medicalnewstoday.com/articles/324259)
### Ulcerative colitis
[Ulcerative colitis (UC)](https://www.medicalnewstoday.com/articles/163772) is a chronic condition that causes inflammation and ulcers in the colon. Estimates suggest that between [600,000 to 900,000 people](https://www.niddk.nih.gov/health-information/digestive-diseases/ulcerative-colitis/definition-facts) in the United States have UC.
Symptoms of UC include:
- loose stools and diarrhea
- [bloody stools](https://www.medicalnewstoday.com/articles/blood-in-stool) with [mucus](https://www.medicalnewstoday.com/articles/310101)
- [frequent bowel movements](https://www.medicalnewstoday.com/articles/318583)
- [fatigue](https://www.medicalnewstoday.com/articles/248002.php "Fatigue: Why am I so tired and what can I do about it?")
- [rectal bleeding](https://www.medicalnewstoday.com/articles/321023)
- [unintentional weight loss](https://www.medicalnewstoday.com/articles/326417)
### Crohn’s disease
[Crohn’s disease](https://www.medicalnewstoday.com/articles/151620.php "What is Crohn's disease?") is a long-term condition that affects around [1 million people](https://www.niddk.nih.gov/health-information/digestive-diseases/crohns-disease/definition-facts) in the United States. It occurs when the lining of the digestive system becomes inflamed.
Crohn’s disease may cause diarrhea and loose stools, as well as:
- abdominal pain
- blood in fecal matter
- [appetite loss](https://www.medicalnewstoday.com/articles/324011)
- unintentional weight loss
- fatigue
### Celiac disease
[Celiac disease](https://www.medicalnewstoday.com/articles/38085.php "All about celiac disease") is an autoimmune condition that causes inflammation of the small intestine. Foods with [gluten](https://www.medicalnewstoday.com/articles/318606), which is in wheat, barley, and rye, trigger symptoms.
This condition affects nearly [2 million people](https://www.niddk.nih.gov/health-information/digestive-diseases/celiac-disease/definition-facts) in the United States.
Symptoms of celiac disease include:
- diarrhea and loose stools
- abdominal pain, bloating, or gas
- [indigestion](https://www.medicalnewstoday.com/articles/163484)
- skin irritation
- fatigue
- weight loss
### Bile acid malabsorption
Several [liver](https://www.medicalnewstoday.com/articles/305075) and [gallbladder](https://www.medicalnewstoday.com/articles/311357) disorders may impair the proper function of bile, which helps properly break down fats in the intestines. This may occur in people with [gallstones](https://www.medicalnewstoday.com/articles/153981.php "Everything you need to know about gallstones") or liver [cirrhosis](https://www.medicalnewstoday.com/articles/172295.php "Everything you need to know about cirrhosis").
[Bile acid malabsorption](https://www.medicalnewstoday.com/articles/325744) may cause diarrhea or loose stools.
### Overactive thyroid (hyperthyroidism)
An [overactive thyroid](https://www.medicalnewstoday.com/articles/9153) is when the thyroid gland produces too many hormones, interfering with its function.
This may cause loose stools and diarrhea, as well as:
- [mood instability](https://www.medicalnewstoday.com/articles/mood-swings)
- [difficulty sleeping](https://www.medicalnewstoday.com/articles/307334)
- [swelling around the neck](https://www.medicalnewstoday.com/articles/167559)
- [erratic body temperature](https://www.medicalnewstoday.com/articles/323819)
- irritability
- weight loss
- [trembling](https://www.medicalnewstoday.com/articles/body-tremors)
### Chronic pancreatitis
[Chronic pancreatitis](https://www.medicalnewstoday.com/articles/160459.php "What's to know about chronic pancreatitis?") is an inflammatory condition that affects the pancreas and could impair the proper breakdown of fats, starches, and proteins.
Approximately [40% to 70%](https://www.ncbi.nlm.nih.gov/books/NBK537191/) of diagnoses are due to [chronic alcohol consumption](https://www.medicalnewstoday.com/articles/157163).
Symptoms of chronic pancreatitis may include:
- loose stools and diarrhea
- abdominal pain
- nausea
- vomiting
### Cystic fibrosis
[Cystic fibrosis](https://www.medicalnewstoday.com/articles/147960.php "Everything you need to know about cystic fibrosis") is a long-term condition where mucus builds up in the [lungs](https://www.medicalnewstoday.com/articles/305190) and digestive system. This may interfere with digestion and cause symptoms like:
- diarrhea and loose stools
- [recurring chest infections](https://www.medicalnewstoday.com/articles/326060)
- [shortness of breath](https://www.medicalnewstoday.com/articles/314963)
- difficulty gaining weight
- [a persistent cough](https://www.medicalnewstoday.com/articles/321597)
### Dumping syndrome (rapid gastric emptying)
[Dumping syndrome](https://www.medicalnewstoday.com/articles/320479) is a condition where food moves from the stomach to the bowel too quickly. It [often](https://www.niddk.nih.gov/health-information/digestive-diseases/dumping-syndrome/definition-facts) occurs after [weight-loss surgery](https://www.medicalnewstoday.com/articles/weight-loss-surgeries) and may cause symptoms like:
- loose stools and diarrhea
- abdominal pain
- nausea
- vomiting
- [dizziness](https://www.medicalnewstoday.com/articles/325251)
- [abnormal heartbeat](https://www.medicalnewstoday.com/articles/8887)
## [Home remedies for loose stools]()
Infrequent cases of loose stools do not typically require medical treatment. However, multiple cases may cause [dehydration](https://www.medicalnewstoday.com/articles/153363.php "What you should know about dehydration") and [malnutrition](https://www.medicalnewstoday.com/articles/179316.php "Malnutrition: What you need to know").
The following [home remedies](https://www.medicalnewstoday.com/articles/324424) may help a person manage loose stools due to dietary trends, infections, or food poisoning:
- dietary changes, such as foods that are soft, bland, and low in fiber
- anti-diarrhea medication, such as loperamide ([Imodium](https://www.medicalnewstoday.com/articles/imodium))
- staying hydrated
- consuming [probiotics](https://www.medicalnewstoday.com/articles/264721)
Loose stools that do not improve after [48 hours](https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes) require medical attention. This may be a sign of a more serious medical condition and may worsen without treatment.
Treatment for chronic conditions may include prescription medications, [antibiotics](https://www.medicalnewstoday.com/articles/10278.php "What to know about antibiotics"), long-term dietary changes, or hospital treatment.
In some cases, there are no available cures for the underlying condition, but treatment may help people manage their symptoms.
People with chronic conditions can work with a doctor to manage their symptoms and prevent complications.
## [Frequently asked questions]()
### What does it mean if stools are loose?
Loose and wet stools can occur due to dietary factors and infections. If loose stools are an ongoing issue, a person may have an underlying health condition.
Loose and wet stools can occur due to dietary factors and infections. If loose stools are an ongoing issue, a person may have an underlying health condition.
### What is the most common cause of loose stools?
Infrequent loose and wet stools are [most commonly](https://www.ncbi.nlm.nih.gov/books/NBK448082/) due to certain foods and drinks, or viruses, bacteria, and parasites.
Infrequent loose and wet stools are [most commonly](https://www.ncbi.nlm.nih.gov/books/NBK448082/) due to certain foods and drinks, or viruses, bacteria, and parasites.
### When should someone be concerned about loose stools?
Loose and wet stools may occasionally happen after eating certain foods.
However, it is important to get medical attention if someone experiences diarrhea or bloody diarrhea and abdominal pain for more than [48 hours](https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes).
Loose and wet stools may occasionally happen after eating certain foods.
However, it is important to get medical attention if someone experiences diarrhea or bloody diarrhea and abdominal pain for more than [48 hours](https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes).
### Is it normal to have loose stools every day?
A person’s diet can cause them to have loose stools regularly. However, if daily loose stools are a change in bowel habits, then this might indicate an infection. It is best to contact a doctor if loose stools persist.
A person’s diet can cause them to have loose stools regularly. However, if daily loose stools are a change in bowel habits, then this might indicate an infection. It is best to contact a doctor if loose stools persist.
## [Summary]()
In most cases, infrequent loose stools will subside within a few days without treatment or with home remedies.
It is important to distinguish between loose stools that occur infrequently and those that are chronic. Loose stools that persist for over 48 hours may indicate a more serious underlying condition that will require immediate medical attention.
- [Irritable Bowel Syndrome](https://www.medicalnewstoday.com/categories/irritable-bowel-syndrome)
- [Ulcerative Colitis](https://www.medicalnewstoday.com/categories/ulcerative-colitis)
- [Crohn's / IBD](https://www.medicalnewstoday.com/categories/crohns)
- [GastroIntestinal / Gastroenterology](https://www.medicalnewstoday.com/categories/gastrointestinal)
### How we reviewed this article:
Sources
Medical News Today has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our [editorial policy](https://www.medicalnewstoday.com/articles/process).
- Chronic diarrhea. (2020).
<https://www.aafp.org/pubs/afp/issues/2020/0415/p472-s1.html>
- Costanzo MD, et al. (2018). Lactose intolerance: Common misunderstandings.
[https://karger.com/anm/article-pdf/73/Suppl.%204/30/2230687/000493669.pdf](https://karger.com/anm/article-pdf/73/Suppl.%204/30/2230687/000493669.pdf)
- Digestive diseases. (n.d.).
<https://www.niddk.nih.gov/health-information/digestive-diseases>
- Hattori K, et al. (2021). Gut microbiota prevents sugar alcohol-induced diarrhea.
<https://www.mdpi.com/2072-6643/13/6/2029>
- Irritable bowel syndrome (IBS). (n.d.).
<https://gi.org/topics/irritable-bowel-syndrome/#tabs2>
- Klochkov A, et al. (2023). Alcoholic pancreatitis.
<https://www.ncbi.nlm.nih.gov/books/NBK537191/>
- Nemeth V, et al. (2022). Diarrhea.
<https://www.ncbi.nlm.nih.gov/books/NBK448082/>
- Norovirus facts and stats. (2024).
<https://www.cdc.gov/norovirus/data-research/>
- Overview: Diarrhea. (2022).
<https://www.ncbi.nlm.nih.gov/books/NBK373090/>
- Symptoms of IBS (irritable bowel syndrome). (2025).
<https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/symptoms/>
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[Medically reviewed]() by [Cynthia Taylor Chavoustie, MPAS, PA-C]() — Written by [Aaron Kandola]() — [Updated on April 28, 2025]()
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| Readable Markdown | Loose stools are unusually watery bowel movements. Causes may include gastrointestinal infections, ulcerative colitis, and thyroid problems, among others.
Loose stools may occur after eating or at other points in the day. They may be softer than a person’s usual stools. They may also be watery, mushy, or shapeless and can have a strong, foul odor.
Diarrhea is when a person experiences [three or more](https://www.ncbi.nlm.nih.gov/books/NBK448082/) loose and watery stools through the day. That said, some people may experience loose stools without having diarrhea.
Some people may also have acute [diarrhea](https://www.medicalnewstoday.com/articles/158634), which is when they experience loose and wet stools for up to [14 days](https://www.ncbi.nlm.nih.gov/books/NBK448082/).
Dietary trends
Certain [foods](https://www.medicalnewstoday.com/articles/318879), drinks, and supplements could increase the likelihood of loose stools or diarrhea.
This could happen if the small intestine cannot properly digest large amounts of certain sugars efficiently.
For example, [sugar alcohols](https://www.medicalnewstoday.com/articles/320901), which are in many fruits, vegetables, and artificial flavorings, may have a [laxative effect](https://www.mdpi.com/2072-6643/13/6/2029). Difficulties with sugar digestion could increase pressure and water in the colon.
Diets high in lactose, a sugar found in milk-based products, may also cause loose stools. When lactose is malabsorbed by the small intestine, it may be [fermented in the gut microbiota](https://karger.com/anm/article-pdf/73/Suppl.%204/30/2230687/000493669.pdf) and cause diarrhea, abdominal pain, and bloating.
Loose stools may also be due to diets high in:
- [alcohol](https://www.medicalnewstoday.com/articles/319165)
- rich and spicy foods
- [coffee](https://www.medicalnewstoday.com/articles/270202.php "Health benefits and risks of drinking coffee")
- [magnesium](https://www.medicalnewstoday.com/articles/286839.php "Why do we need magnesium?")
Infections or food poisoning
[Viruses](https://www.medicalnewstoday.com/articles/do-i-have-a-stomach-virus-or-food-poisoning), bacteria, or [parasites](https://www.medicalnewstoday.com/articles/220302) may cause [inflammation](https://www.medicalnewstoday.com/articles/248423.php) in the stomach and intestines, which can lead to loose stools.
Infections from viruses are the most [common cause](https://www.ncbi.nlm.nih.gov/books/NBK448082/) of loose stools and acute diarrhea.
For example, [norovirus](https://www.medicalnewstoday.com/articles/179107) is responsible for nearly [58%](https://www.cdc.gov/norovirus/data-research/) of foodborne illnesses in the United States and affects 19 to 21 million people. [Rotavirus](https://www.medicalnewstoday.com/articles/177104) and [viral gastroenteritis](https://www.medicalnewstoday.com/articles/acute-gastroenteritis-symptoms) are two more viruses that may also cause symptoms such as:
- diarrhea
- [abdominal pain](https://www.medicalnewstoday.com/articles/318286)
- [nausea](https://www.medicalnewstoday.com/articles/what-causes-nausea)
- [vomiting](https://www.medicalnewstoday.com/articles/vomiting)
- [Salmonella](https://www.medicalnewstoday.com/articles/160942)
- Campylobacter
- Shigella
- [E. coli](https://www.medicalnewstoday.com/articles/68511)
- [Clostridium difficile](https://www.medicalnewstoday.com/articles/172329)
Some people may experience ongoing bouts of loose and watery stools, known as [chronic diarrhea](https://www.medicalnewstoday.com/articles/319995). This lasts longer than [four weeks](https://www.aafp.org/pubs/afp/issues/2020/0415/p472-s1.html), is typically due to an underlying health condition, and may require treatment.
Irritable bowel syndrome
[Irritable bowel syndrome (IBS)](https://www.medicalnewstoday.com/articles/37063.php "What is irritable bowel syndrome (IBS)?") is a chronic condition affecting the digestive system. According to the American College of Gastroenterology, between [10% and 15%](https://gi.org/topics/irritable-bowel-syndrome/#tabs2) of people in the United States have IBS. It can affect people of any sex but is more common in women.
Loose stools and diarrhea are [common](https://www.nhs.uk/conditions/irritable-bowel-syndrome-ibs/symptoms/) symptoms of IBS. Other symptoms may include:
- abdominal pain, bloating, or gas
- [constipation](https://www.medicalnewstoday.com/articles/150322.php "What to know about constipation")
- [indigestion](https://www.medicalnewstoday.com/articles/163484.php "What to know about indigestion or dyspepsia")
Ulcerative colitis
Symptoms of UC include:
- loose stools and diarrhea
- [bloody stools](https://www.medicalnewstoday.com/articles/blood-in-stool) with [mucus](https://www.medicalnewstoday.com/articles/310101)
- [frequent bowel movements](https://www.medicalnewstoday.com/articles/318583)
- [fatigue](https://www.medicalnewstoday.com/articles/248002.php "Fatigue: Why am I so tired and what can I do about it?")
- [rectal bleeding](https://www.medicalnewstoday.com/articles/321023)
- [unintentional weight loss](https://www.medicalnewstoday.com/articles/326417)
Crohn’s disease
[Crohn’s disease](https://www.medicalnewstoday.com/articles/151620.php "What is Crohn's disease?") is a long-term condition that affects around [1 million people](https://www.niddk.nih.gov/health-information/digestive-diseases/crohns-disease/definition-facts) in the United States. It occurs when the lining of the digestive system becomes inflamed.
Crohn’s disease may cause diarrhea and loose stools, as well as:
- abdominal pain
- blood in fecal matter
- [appetite loss](https://www.medicalnewstoday.com/articles/324011)
- unintentional weight loss
- fatigue
Celiac disease
[Celiac disease](https://www.medicalnewstoday.com/articles/38085.php "All about celiac disease") is an autoimmune condition that causes inflammation of the small intestine. Foods with [gluten](https://www.medicalnewstoday.com/articles/318606), which is in wheat, barley, and rye, trigger symptoms.
This condition affects nearly [2 million people](https://www.niddk.nih.gov/health-information/digestive-diseases/celiac-disease/definition-facts) in the United States.
Symptoms of celiac disease include:
- diarrhea and loose stools
- abdominal pain, bloating, or gas
- [indigestion](https://www.medicalnewstoday.com/articles/163484)
- skin irritation
- fatigue
- weight loss
Bile acid malabsorption
Several [liver](https://www.medicalnewstoday.com/articles/305075) and [gallbladder](https://www.medicalnewstoday.com/articles/311357) disorders may impair the proper function of bile, which helps properly break down fats in the intestines. This may occur in people with [gallstones](https://www.medicalnewstoday.com/articles/153981.php "Everything you need to know about gallstones") or liver [cirrhosis](https://www.medicalnewstoday.com/articles/172295.php "Everything you need to know about cirrhosis").
Overactive thyroid (hyperthyroidism)
An [overactive thyroid](https://www.medicalnewstoday.com/articles/9153) is when the thyroid gland produces too many hormones, interfering with its function.
This may cause loose stools and diarrhea, as well as:
- [mood instability](https://www.medicalnewstoday.com/articles/mood-swings)
- [difficulty sleeping](https://www.medicalnewstoday.com/articles/307334)
- [swelling around the neck](https://www.medicalnewstoday.com/articles/167559)
- [erratic body temperature](https://www.medicalnewstoday.com/articles/323819)
- irritability
- weight loss
- [trembling](https://www.medicalnewstoday.com/articles/body-tremors)
Chronic pancreatitis
[Chronic pancreatitis](https://www.medicalnewstoday.com/articles/160459.php "What's to know about chronic pancreatitis?") is an inflammatory condition that affects the pancreas and could impair the proper breakdown of fats, starches, and proteins.
Symptoms of chronic pancreatitis may include:
- loose stools and diarrhea
- abdominal pain
- nausea
- vomiting
Cystic fibrosis
[Cystic fibrosis](https://www.medicalnewstoday.com/articles/147960.php "Everything you need to know about cystic fibrosis") is a long-term condition where mucus builds up in the [lungs](https://www.medicalnewstoday.com/articles/305190) and digestive system. This may interfere with digestion and cause symptoms like:
- diarrhea and loose stools
- [recurring chest infections](https://www.medicalnewstoday.com/articles/326060)
- [shortness of breath](https://www.medicalnewstoday.com/articles/314963)
- difficulty gaining weight
- [a persistent cough](https://www.medicalnewstoday.com/articles/321597)
Dumping syndrome (rapid gastric emptying)
[Dumping syndrome](https://www.medicalnewstoday.com/articles/320479) is a condition where food moves from the stomach to the bowel too quickly. It [often](https://www.niddk.nih.gov/health-information/digestive-diseases/dumping-syndrome/definition-facts) occurs after [weight-loss surgery](https://www.medicalnewstoday.com/articles/weight-loss-surgeries) and may cause symptoms like:
- loose stools and diarrhea
- abdominal pain
- nausea
- vomiting
- [dizziness](https://www.medicalnewstoday.com/articles/325251)
- [abnormal heartbeat](https://www.medicalnewstoday.com/articles/8887)
Infrequent cases of loose stools do not typically require medical treatment. However, multiple cases may cause [dehydration](https://www.medicalnewstoday.com/articles/153363.php "What you should know about dehydration") and [malnutrition](https://www.medicalnewstoday.com/articles/179316.php "Malnutrition: What you need to know").
The following [home remedies](https://www.medicalnewstoday.com/articles/324424) may help a person manage loose stools due to dietary trends, infections, or food poisoning:
- dietary changes, such as foods that are soft, bland, and low in fiber
- anti-diarrhea medication, such as loperamide ([Imodium](https://www.medicalnewstoday.com/articles/imodium))
- staying hydrated
- consuming [probiotics](https://www.medicalnewstoday.com/articles/264721)
Loose stools that do not improve after [48 hours](https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes) require medical attention. This may be a sign of a more serious medical condition and may worsen without treatment.
Treatment for chronic conditions may include prescription medications, [antibiotics](https://www.medicalnewstoday.com/articles/10278.php "What to know about antibiotics"), long-term dietary changes, or hospital treatment.
In some cases, there are no available cures for the underlying condition, but treatment may help people manage their symptoms.
People with chronic conditions can work with a doctor to manage their symptoms and prevent complications.
Loose and wet stools can occur due to dietary factors and infections. If loose stools are an ongoing issue, a person may have an underlying health condition.
Infrequent loose and wet stools are [most commonly](https://www.ncbi.nlm.nih.gov/books/NBK448082/) due to certain foods and drinks, or viruses, bacteria, and parasites.
Loose and wet stools may occasionally happen after eating certain foods.
However, it is important to get medical attention if someone experiences diarrhea or bloody diarrhea and abdominal pain for more than [48 hours](https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes).
A person’s diet can cause them to have loose stools regularly. However, if daily loose stools are a change in bowel habits, then this might indicate an infection. It is best to contact a doctor if loose stools persist.
In most cases, infrequent loose stools will subside within a few days without treatment or with home remedies.
It is important to distinguish between loose stools that occur infrequently and those that are chronic. Loose stools that persist for over 48 hours may indicate a more serious underlying condition that will require immediate medical attention. |
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