Early Satiety means feeling full sooner than expected when eating a meal. It is a symptom description, not a diagnosis. Clinicians commonly use it in gastroenterology to evaluate upper gastrointestinal (GI) disorders. It is also used to describe appetite-limiting fullness that can contribute to reduced intake and weight change.

Anorexia means a decreased desire to eat or a loss of appetite. It is a symptom rather than a diagnosis by itself. Clinicians use the term across many specialties, including gastroenterology and hepatology. It is also used in psychiatry, where it may relate to eating disorders, but it is not synonymous with them.

BMI is a numeric estimate of body size based on weight and height. It stands for body mass index and is calculated as weight divided by height squared. BMI is commonly used in clinics, hospitals, and public health to classify weight status. In gastroenterology and hepatology, it often helps contextualize risk, symptoms, and outcomes.

Cachexia is a complex wasting syndrome marked by ongoing loss of skeletal muscle, often with loss of fat mass. It is commonly seen in chronic illnesses such as cancer, advanced liver disease, chronic heart failure, and chronic inflammatory disorders. In gastroenterology and hepatology, Cachexia often overlaps with poor intake, malabsorption, and inflammation. Clinicians use the term to describe a specific pattern of weight and muscle loss that is not fully explained by reduced calories alone.

Malnutrition is a health state in which nutrient intake or nutrient utilization does not meet the body’s needs. It can involve too little energy or protein, too few vitamins or minerals, or an imbalance between needs and intake. Clinicians use the term in hospitals, clinics, and surgery settings to describe nutrition-related risk and impaired recovery. In gastroenterology and hepatology, it often reflects problems with eating, digestion, absorption, or chronic inflammation.

TPN stands for total parenteral nutrition. It is a way to deliver complete nutrition directly into the bloodstream, bypassing the gastrointestinal (GI) tract. TPN is commonly used in hospitals and sometimes at home when the gut cannot safely absorb enough nutrients.

Parenteral Nutrition is a way to deliver nutrients directly into the bloodstream. It bypasses the stomach and intestines when the gastrointestinal (GI) tract cannot be used safely or effectively. It is commonly used in hospitalized patients with intestinal failure or severe malabsorption. Some patients also receive Parenteral Nutrition at home with long-term venous access and monitoring.

Enteral Nutrition is the delivery of nutrients into the gastrointestinal (GI) tract. It is commonly given as liquid formula through a feeding tube or, in some settings, by carefully structured oral nutrition plans. It is used when a person cannot eat enough by mouth but the gut can still digest and absorb nutrients. It is widely applied in hospitals, intensive care units, oncology care, and perioperative GI and surgical practice.

Nutritional Support is a set of clinical strategies used to provide calories, protein, fluids, electrolytes, vitamins, and minerals when usual eating is not enough. It can be delivered by mouth, through the gastrointestinal (GI) tract using feeding tubes, or intravenously as parenteral nutrition. It is commonly used in hospitalized patients, perioperative care, cancer care, and chronic GI or liver disease. The goal is to maintain or restore nutritional status while underlying disease is evaluated or treated.

Ostomy Care is the clinical support and routine management of a surgically created opening (stoma) that diverts intestinal contents to the skin surface. It commonly includes selecting and fitting an ostomy pouching system and protecting the skin around the stoma (peristomal skin). It is used after many colorectal and small-bowel surgeries, including temporary or permanent diversions. It is taught and coordinated across surgery, gastroenterology, nursing, and wound-ostomy-continence (WOC) specialties.