Digestive Disorders and Gut Health
Expert-defined terms from the Professional Certificate in Skin Health and Gut Health course at London School of Business and Administration. Free to read, free to share, paired with a globally recognised certification pathway.
Autoimmune Disease #
An autoimmune disease is a condition in which the immune system mistakenly attacks the body's own tissues. In the context of digestive disorders and gut health, autoimmune diseases such as celiac disease and Crohn's disease can affect the digestive system.
Bacterial Overgrowth #
Bacterial overgrowth refers to an excessive growth of bacteria in the small intestine. This can lead to symptoms such as bloating, gas, diarrhea, and abdominal pain. Bacterial overgrowth can disrupt the balance of bacteria in the gut and impact overall gut health.
Colon #
The colon, also known as the large intestine, is the final part of the digestive system. Its main functions include absorbing water and electrolytes from undigested food, forming and eliminating feces. The health of the colon is essential for proper digestion and overall gut health.
Constipation #
Constipation is a common digestive disorder characterized by infrequent bowel movements or difficulty passing stools. It can be caused by various factors such as a lack of fiber in the diet, dehydration, or certain medications. Constipation can impact gut health by disrupting the natural rhythm of bowel movements.
Crohn's Disease #
Crohn's disease is a type of inflammatory bowel disease (IBD) that causes chronic inflammation of the digestive tract. It can affect any part of the digestive system from the mouth to the anus. Symptoms of Crohn's disease include abdominal pain, diarrhea, fatigue, and weight loss. Managing Crohn's disease is essential for maintaining gut health.
Digestive System #
The digestive system is a series of organs that work together to break down food, absorb nutrients, and eliminate waste. It includes organs such as the mouth, esophagus, stomach, small intestine, large intestine, liver, and pancreas. The digestive system plays a crucial role in overall gut health.
Dysbiosis #
Dysbiosis refers to an imbalance in the gut microbiota, with an overgrowth of harmful bacteria and a decrease in beneficial bacteria. Dysbiosis can disrupt the normal functioning of the gut and lead to various digestive disorders such as irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD).
Esophagus #
The esophagus is a muscular tube that connects the throat to the stomach. Its main function is to transport food and liquids from the mouth to the stomach for digestion. Disorders of the esophagus, such as gastroesophageal reflux disease (GERD), can impact gut health by affecting the passage of food and stomach acid.
Fiber #
Fiber is a type of carbohydrate found in plant-based foods that the body cannot digest. It plays a crucial role in digestive health by promoting regular bowel movements, preventing constipation, and feeding beneficial bacteria in the gut. Including an adequate amount of fiber in the diet is essential for maintaining gut health.
Food Allergy #
A food allergy is an abnormal immune response to a specific food protein. Symptoms of a food allergy can range from mild to severe and may include hives, swelling, difficulty breathing, and anaphylaxis. Food allergies can also impact gut health by triggering inflammation in the digestive tract.
Food Intolerance #
Food intolerance is a non-immune reaction to certain foods or food components. Common food intolerances include lactose intolerance, gluten intolerance, and fructose malabsorption. Symptoms of food intolerance can include bloating, gas, diarrhea, and abdominal pain. Identifying and managing food intolerances is important for gut health.
Gallbladder #
The gallbladder is a small organ located beneath the liver that stores and concentrates bile produced by the liver. Bile is released from the gallbladder into the small intestine to help digest fats. Gallbladder disorders, such as gallstones or inflammation, can impact digestion and gut health.
Gastrointestinal Tract #
The gastrointestinal tract, also known as the digestive tract, is a series of organs that process food and absorb nutrients. It includes the mouth, esophagus, stomach, small intestine, large intestine, and anus. The health of the gastrointestinal tract is essential for overall gut health.
Gut Microbiota #
The gut microbiota, also known as the gut microbiome, refers to the community of microorganisms that live in the digestive tract. These microorganisms include bacteria, viruses, fungi, and other microbes. The gut microbiota plays a critical role in digestion, immune function, and overall gut health.
Gut #
Brain Axis: The gut-brain axis is a bidirectional communication system between the gut and the brain. It involves the central nervous system, enteric nervous system, and gut microbiota. The gut-brain axis plays a crucial role in regulating digestion, mood, and overall gut health.
Heartburn #
Heartburn is a burning sensation in the chest caused by stomach acid refluxing into the esophagus. It is a common symptom of gastroesophageal reflux disease (GERD) and can be triggered by certain foods, medications, or lifestyle factors. Chronic heartburn can impact gut health by damaging the esophagus and disrupting digestion.
Irritable Bowel Syndrome (IBS) #
Irritable bowel syndrome (IBS) is a common digestive disorder characterized by abdominal pain, bloating, gas, and changes in bowel habits. The exact cause of IBS is unknown, but factors such as stress, diet, and gut microbiota imbalance may play a role. Managing IBS symptoms is crucial for maintaining gut health.
Inflammatory Bowel Disease (IBD) #
Inflammatory bowel disease (IBD) is a group of chronic inflammatory conditions that affect the digestive tract. The two main types of IBD are Crohn's disease and ulcerative colitis. Symptoms of IBD include abdominal pain, diarrhea, fatigue, and weight loss. Managing IBD is essential for preserving gut health.
Lactose Intolerance #
Lactose intolerance is the inability to digest lactose, a sugar found in dairy products. It occurs due to a deficiency of the enzyme lactase, which is needed to break down lactose in the small intestine. Symptoms of lactose intolerance can include bloating, gas, diarrhea, and abdominal pain. Managing lactose intolerance is important for gut health.
Leaky Gut Syndrome #
Leaky gut syndrome, also known as increased intestinal permeability, is a condition in which the lining of the intestines becomes damaged and allows substances to leak into the bloodstream. This can trigger an immune response and lead to inflammation in the body. Leaky gut syndrome is associated with various digestive disorders and can impact gut health.
Liver #
The liver is a vital organ located in the upper right side of the abdomen. It performs a variety of functions, including detoxification, metabolism of nutrients, and production of bile. The liver plays a crucial role in digestion and overall gut health.
Malabsorption #
Malabsorption is a condition in which the body is unable to absorb nutrients from food properly. It can be caused by various factors such as digestive disorders, surgery, or certain medications. Malabsorption can lead to deficiencies in essential nutrients and impact gut health.
Microbiome #
The microbiome refers to the collective genomes of all microorganisms living in or on the human body. The gut microbiome, in particular, plays a key role in digestion, immune function, and overall health. Maintaining a diverse and balanced gut microbiome is essential for gut health.
Probiotics #
Probiotics are live microorganisms that provide health benefits when consumed in adequate amounts. They are often referred to as "good" bacteria and can help maintain a healthy balance of gut microbiota. Probiotics are available in supplements and certain foods such as yogurt, kefir, and sauerkraut.
Small Intestine #
The small intestine is a long, coiled tube located between the stomach and large intestine. Its main functions include digesting food, absorbing nutrients, and transporting waste. Disorders of the small intestine, such as bacterial overgrowth or celiac disease, can impact gut health.
SIBO (Small Intestinal Bacterial Overgrowth) #
SIBO is a condition characterized by an excessive growth of bacteria in the small intestine. It can lead to symptoms such as bloating, gas, diarrhea, and abdominal pain. SIBO can disrupt the balance of bacteria in the gut and impact overall gut health.
Stomach #
The stomach is a muscular organ located in the upper abdomen that plays a key role in digestion. It breaks down food into smaller particles, mixes it with digestive juices, and regulates the emptying of its contents into the small intestine. Disorders of the stomach, such as gastritis or ulcers, can impact gut health.
Ulcerative Colitis #
Ulcerative colitis is a type of inflammatory bowel disease (IBD) that causes inflammation and ulcers in the lining of the colon and rectum. Symptoms of ulcerative colitis include abdominal pain, bloody diarrhea, fatigue, and weight loss. Managing ulcerative colitis is essential for preserving gut health.
Vitamin Deficiency #
Vitamin deficiency occurs when the body does not get enough of a specific vitamin to function properly. It can be caused by various factors such as poor diet, malabsorption, or certain medical conditions. Vitamin deficiencies can impact overall health, including gut health.
Yeast Overgrowth #
Yeast overgrowth, particularly of Candida species, refers to an excessive growth of yeast in the digestive tract. This can be triggered by factors such as antibiotic use, high sugar intake, or weakened immune function. Yeast overgrowth can disrupt the balance of gut microbiota and impact gut health.