Signs of an Unhealthy Gut and What to Do About It
Poor gut health may manifest as fatigue, upset stomach, skin conditions, and autoimmune challenges. Probiotics, fermented foods, hydration, and stress management can help.
What is the gut microbiome and why is it important?
The term “gut microbiome” refers to the microorganisms living in your intestines. Each person has about 200 different speciesTrusted Source of bacteria, viruses, and fungi in their digestive tract.
Some microorganisms are harmful to our health, but many are incredibly beneficial and even necessary for a healthy body.
ResearchTrusted Source indicates that having a large variety of bacteria in the gut may help reduce the risk of conditions like:
In other words, your gut health is often related to your overall health.
How does the gut microbiome affect your health?
The incredible complexity of the gut and its importance to our overall health is a topic of increasing research in the medical community.
ResearchTrusted Source over the past few decades has found links between gut health and:
mental health disorders
A higher level of diversity in gut bacteria may be associated with improved general mental and physical health.
7 signs of an unhealthy gut
Many parts of modern life can affect your gut microbiome, including:
high stress levels
too little sleep
eating a Western diet high in processed and sugary foods
taking antibiotics
This in turn may affect other aspects of your health, such as:
immune function
hormone levels
weight
development of diseases
You may notice a few symptoms if you have reduced gut health. Here are seven of the most common signs:
1. Upset stomach
Stomach disturbances can all be signs of an unhealthy gut. They include:
gas
heartburn
A balanced gut will have less difficulty processing food and eliminating waste, likely leading to fewer symptoms.
2. A high-sugar diet
A diet high in processed foods and added sugars can decrease the amount of “good” bacteria and diversity in your gut.
ResearchTrusted Source suggests that eating too much sugar may lead to increased inflammation throughout the body. Inflammation can be the precursor to several diseases, including cancer.
If you eat high amounts of sugar, your gut health may be compromised.
3. Unintentional weight changes
Gaining or losing weight without changing your diet or exercise habits may be a sign of an unhealthy gut. An imbalanced gut can impair your body’s ability to absorb nutrients, regulate blood sugar, and store fat.
Weight loss may be caused by malabsorption because of small intestinal bacterial overgrowth (SIBO). On the other hand, weight gain may be caused by insulin resistance or increased inflammation.
4. Sleep disturbances or constant fatigue
ResearchTrusted Source indicates that an imbalance in gut bacteria may be linked to fragmented sleep and short sleep duration, which may lead to chronic fatigue.
While the cause remains unclearTrusted Source, it appears to be connected to inflammation, metabolic function, and mental health.
5. Skin irritation
Skin conditions like psoriasis may be related to the types of bacteria present in the gut. Lower concentrations of beneficial bacteria may impact the body’s immune system and your skin health.
6. Autoimmune conditions
Many studies have found connections between the gut and the immune system.
An unhealthy gut may increase systemic inflammation and alter the proper functioning of the immune system. This may lead to autoimmune diseases, where the body attacks itself mistaking its cells and organs for harmful invaders.
7. Food intolerances
Food intolerances are the result of difficulty digesting certain foods. This is different than a food allergy, which is caused by an immune system reaction to certain foods.
Research indicates that food intolerances, like lactose intolerance, may be caused by poor quality of bacteria in the gut. This can lead to trouble digesting the trigger foods and symptoms like:
bloating
gas
diarrhea
abdominal pain
There is also some research indicating that food allergies may be related to gut health.
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7 things you can do for your gut health
You may be able to improve and reset your gut health through lifestyle and diet changes. Consider trying one or more of the following to improve your gut health naturally:
1. Lower your stress levels
Chronic high levels of stress are hard on your whole body, including your gut. This is because your body releases certain hormones when it experiences stress. High levels of these hormones affect your body and may compromise gut health.
A few ways to lower stress may include:
walking
getting a massage
spending time with friends or family
diffusing essential oils
limiting alcohol intake
laughing
practicing yoga
spending time with a pet
2. Get enough sleep
Not getting enough or sufficient quality of sleep may have serious impacts on your gut health, which can in turn contribute to more sleep issues.
Try to prioritize getting at least 7–8 hoursTrusted Source of uninterrupted sleep per night. Your doctor may be able to help if you have trouble sleeping.
3. Eat slowly
Chewing your food thoroughly and eating your meals more slowly may lower your chances of developing obesity and diabetes while also helping you make better food choices.
This may help you reduce digestive discomfort and maintain a healthy gut.
4. Stay hydrated
Drinking plenty of water may be linked to increased diversity of bacteria in the gut, though the source of the water also matters.
One 2022 studyTrusted Source also found that people who drank more water had less of a type of bacteria that can cause gastrointestinal infections.
Staying hydrated benefits your health overall and can help prevent constipation. It may also be a simple way to promote a healthy gut.
5. Take a prebiotic or probiotic
While researchTrusted Source is ongoing, adding a prebiotic or probiotic supplement to your diet may help improve your gut health. Prebiotics provide “food” meant to promote the growth of beneficial bacteria in the gut, while probiotics are live good bacteria.
People who have a severe illness or a weakened immune system should not take probiotics. Also, not all probiotic supplements are high quality or beneficial for your health.
It’s best to speak with a healthcare professional when choosing a probiotic or prebiotic supplement to help improve your health.
6. Check for food intolerances
You may have a food intolerance if you have symptoms such as:
bloating
abdominal pain
gas
nausea
You can try eliminating common trigger foods to see if your symptoms improve. If you’re able to identify and avoid a food or foods that are contributing to your symptoms, you may see a positive change in your digestive health.
7. Change your diet
Reducing the amount of processed, sugary, and high fat foods that you eat may lead to better gut health.
Eating a diet high in fiber likely contributes to a healthy gut microbiome as well. You may also positively impact your gut by eating foods high in micronutrients called polyphenols present in:
vegetables
fruits
coffee
tea
wine
4 types of food for gut health
Diet and gut health appear to be very closely linked. Avoiding processed foods, high fat foods, and foods high in refined sugars is likely important for maintaining a healthy microbiome, as these foods may promote the growth of damaging bacteria.
You can eat certain foods that actively promote the growth of beneficial bacteria, contributing to your overall health. These superfoods for gut health include:
1. High fiber foods
ResearchTrusted Source indicates that high fiber foods have a positive impact on gut health. These foods include:
legumes, like black beans and chickpeas
whole grains, like oats and quinoa
vegetables, like broccoli and asparagus
nuts, like almonds and pistachios
fruits, like apples and peaches
2. Garlic
According to a 2019 studyTrusted Source in rodents, garlic may increase gut microbiome diversity and improve gut health.
A small 2018 studyTrusted Source of 49 people similarly found that aged garlic extract increased diversity and levels of beneficial bacteria. Still, more research in humans should be done.
3. Fermented foods
Fermented foods are great dietary sources of probiotics. Examples include:
ResearchTrusted Source suggests that consuming these foods may improve the gut microbiome.
4. Collagen-boosting foods
Collagen-rich foods such as bone broth and salmon skin may be beneficial for both overall health and gut health.
A 2021 studyTrusted Source indicated that supplements with collagen may benefit the gut microbiome in mice, though further research is needed.
You could also try to boost your body’s collagen production through your diet. To help your body make collagen, try eating more:
citrus fruits
broccoli
meat
eggs
nuts
Frequently asked questions
Why does the gut microbiome vary in individuals?
The gut microbiome is affected by many factors, including:
diet
environment
antibiotic use
stress
sleep
genetics
Each of these elements varies in different people, influencing their gut microbiomes in different ways. This variation results in individuals having unique gut microbiomes.
How does the gut microbiome respond to fasting?
Fasting seems to benefit the gut microbiome, though more research in humans needs to be done.
According to one small 2019 study of 16 people, fasting was linked to lower levels of a bacteria that promotes colorectal cancer.
Research in animals also shows the benefits of fasting. A 2018 studyTrusted Source in fruit flies found that intermittent fasting appeared to improve gut health and increase lifespan. Another 2019 studyTrusted Source in mice indicated that fasting promoted the growth of beneficial gut bacteria and reduced inflammation in the intestines.
Does eating probiotics actually change your gut microbiome?
Some studies have found no impact of probiotics on the gut microbiome. Still, other researchTrusted Source suggests that probiotics may significantly affect the makeup of the gut microbiome and positively impact other areas of health, like immunity.
Studies are still being done in this area.
How can I improve my gut health?
You can improve your gut health by taking steps to improve your overall health. This can include eating more fiber-rich foods, eating fewer ultra-processed foods, getting enough sleep, and managing your stress levels.
What are the signs of an unhealthy gut?
Some signs of unbalanced gut bacteria can include upset stomach, unintentional weight changes, and fatigue.
Takeaway
The human gut is complex. While research is ongoing, it seems clear that the gut microbiome impacts whole-body health. A healthy gut contributes to:
a strong immune system
heart health
brain health
improved mood
healthy sleep
effective digestion
potential prevention of some cancers and autoimmune diseases
Lifestyle and dietary changes may positively affect not only your gut health but your overall health.