Nutrient Metabolism And Digestion
Expert-defined terms from the Postgraduate Certificate in Nutritional Management of Diverticulitis course at LearnUNI. Free to read, free to share, paired with a professional course.
Amino Acid – Basic building block of proteins; consists of an amino group… #
Related terms: essential amino acid, non‑essential amino acid, peptide. In diverticulitis management, adequate intake supports tissue repair and immune function. Challenge: balancing protein quality without excess nitrogen waste.
Amylase – Enzyme that hydrolyzes starch into maltose and dextrins #
Related terms: pancreatic amylase, salivary amylase, carbohydrase. Clinical relevance: reduced amylase may indicate pancreatic insufficiency, affecting carbohydrate digestion and stool consistency.
Anthropometry – Measurement of the human body to assess nutritional statu… #
Related terms: BMI, waist‑hip ratio, skinfold thickness. Practical use: tracking weight changes in diverticulitis patients to adjust dietary plans. Limitation: does not directly reflect body composition.
Antioxidant – Molecule that inhibits oxidation of other molecules, protec… #
Related terms: vitamin C, vitamin E, polyphenols. In diverticulitis, antioxidants may reduce mucosal inflammation. Challenge: bioavailability varies with food matrix.
Apoptosis – Programmed cell death essential for tissue turnover #
Related terms: necrosis, autophagy, caspases. Nutrients such as omega‑3 fatty acids can modulate apoptotic pathways in colonic epithelium, influencing disease progression.
Arterial Blood Gas (ABG) – Test measuring pH, PaO₂, PaCO₂, and bicarbonat… #
Related terms: acid‑base balance, respiratory compensation. In severe diverticulitis with sepsis, ABG helps monitor metabolic acidosis from lactic acid accumulation.
Arachidonic Acid – Polyunsaturated omega‑6 fatty acid precursor of eicosa… #
Related terms: prostaglandins, leukotrienes, inflammatory mediators. Diets high in arachidonic acid may exacerbate inflammatory responses in the colon; omega‑3 supplementation can counterbalance.
Basal Metabolic Rate (BMR) – Minimum energy expenditure required for vita… #
Related terms: resting metabolic rate, thermogenesis. Accurate BMR estimation guides caloric prescriptions for diverticulitis patients who may experience hypermetabolism during flare‑ups.
Beta‑Oxidation – Mitochondrial pathway that breaks down fatty acids to ac… #
Related terms: fatty acid oxidation, Krebs cycle, ketogenesis. Impaired beta‑oxidation can lead to lipid accumulation and exacerbate colonic inflammation.
Biogenic Amines – Organic nitrogen compounds derived from amino acids, e #
g., histamine, serotonin. Related terms: tyramine, catecholamines. Certain foods high in biogenic amines may trigger symptoms in sensitive diverticulitis patients; monitoring is advised.
Biotin – Water‑soluble B‑vitamin (B7) functioning as a coenzyme for carbo… #
Related terms: coenzyme, metabolic cofactor. Deficiency can impair fatty‑acid synthesis and gluconeogenesis, potentially affecting mucosal healing.
Blended Fiber – Combination of soluble and insoluble dietary fibers #
Related terms: prebiotic fiber, bulk‑forming fiber. In diverticulitis, blended fiber improves stool bulk while maintaining fermentability, aiding symptom control. Challenge: patient tolerance varies.
Bolus Feeding – Delivery of a large volume of enteral formula at once #
Related terms: continuous feeding, intermittent feeding. May be used when oral intake is limited but gastrointestinal motility is intact. Risk of intolerance and aspiration must be assessed.
Bran – Outer layer of cereal grains rich in insoluble fiber #
Related terms: wheat bran, rye bran, dietary fiber. Historically restricted during acute diverticulitis due to fear of obstruction; current evidence supports gradual reintroduction with monitoring.
Butyrate – Short‑chain fatty acid produced by colonic fermentation of res… #
Related terms: SCFA, colonocyte energy source. Butyrate serves as a primary fuel for colonocytes, promotes anti‑inflammatory pathways, and enhances barrier integrity.
Calcium – Mineral essential for bone health, muscle contraction, and enzy… #
Related terms: vitamin D, parathyroid hormone, osteocalcin. Adequate calcium intake may bind bile acids, reducing colonic irritation; however, excess may precipitate constipation.
Caloric Density – Energy per unit weight of food (kcal/g) #
Related terms: energy density, nutrient density. Selecting low‑calorie, high‑nutrient foods helps manage weight without compromising micronutrient intake in diverticulitis patients.
Carbohydrate‑Loading – Strategy of consuming high‑carbohydrate foods to m… #
Related terms: glycogen, glucose, endurance nutrition. Not typically indicated for diverticulitis, but understanding carbohydrate metabolism aids in designing balanced meals.
Carnitine – Quaternary amine that transports long‑chain fatty acids into… #
Related terms: acetyl‑carnitine, fatty‑acid transport. Carnitine deficiency can impair energy production, especially in malnourished patients.
Casein – Milk‑derived phosphoprotein comprising ~80 % of bovine dairy pro… #
Related terms: whey protein, dairy allergy, slow‑release protein. Casein provides a sustained amino‑acid supply, useful in post‑surgical recovery; however, lactose intolerance may limit use.
Cellular Respiration – Series of metabolic pathways (glycolysis, Krebs cy… #
Related terms: ATP synthesis, mitochondria, anaerobic metabolism. Disruption of cellular respiration in colonic cells can compromise barrier function.
Cholecystokinin (CCK) – Hormone released by I‑cells in response to fat an… #
Related terms: gallbladder contraction, pancreatic enzyme secretion. Excess CCK stimulation may increase pancreatic secretions, relevant when considering high‑fat diets in diverticulitis.
Chronic Inflammation – Persistent low‑grade immune activation lasting wee… #
Related terms: cytokines, CRP, tissue remodeling. Nutritional strategies aim to modulate inflammatory mediators through omega‑3 fatty acids, antioxidants, and fiber.
Chyme – Semi‑fluid mass of partially digested food mixed with gastric sec… #
Related terms: gastric emptying, intestinal motility. Proper chyme formation facilitates nutrient absorption; delayed gastric emptying can exacerbate abdominal discomfort.
Coenzyme Q10 (CoQ10) – Lipid‑soluble component of the electron transport… #
Related terms: ubiquinone, oxidative phosphorylation. Supplementation may improve mitochondrial efficiency and reduce oxidative stress in colonic tissues.
Collagen – Structural protein rich in glycine, proline, and hydroxyprolin… #
Related terms: connective tissue, wound healing, gelatin. Dietary collagen peptides provide amino acids necessary for mucosal repair after diverticulitis flare.
Colonic Transit Time – Duration for fecal matter to travel through the co… #
Related terms: stool frequency, motility, constipation. Fiber type, fluid intake, and physical activity influence transit time; prolonged transit can increase bacterial overgrowth.
Complex Carbohydrate – Polysaccharides requiring enzymatic breakdown befo… #
g., starch, glycogen). Related terms: simple carbohydrate, glycemic index, digestion. Complex carbs provide sustained energy and fiber, beneficial for bowel regularity.
Conjugated Linoleic Acid (CLA) – Group of linoleic acid isomers with pote… #
Related terms: fatty‑acid isomer, adipose tissue. Limited evidence suggests CLA may modulate colonic inflammation, but dosage and safety in diverticulitis remain under study.
Coronary Risk Factor – Condition increasing likelihood of heart disease (… #
g., hyperlipidemia). Related terms: LDL cholesterol, hypertension. Dietary recommendations for diverticulitis often overlap with cardiovascular health, emphasizing omega‑3s, fiber, and reduced saturated fat.
Creatine – Nitrogen‑containing compound stored in muscle, used for rapid… #
Related terms: phosphocreatine, muscle metabolism. In malnourished patients, creatine supplementation may support lean‑mass preservation during recovery.
Crude Fiber – Measure of indigestible plant components (cellulose, lignin… #
Related terms: dietary fiber, NDF, ADF. While crude fiber provides bulk, it lacks fermentability; modern recommendations favor soluble, fermentable fibers for colonic health.
Curcumin – Bioactive polyphenol from turmeric with anti‑inflammatory prop… #
Related terms: NF‑κB inhibition, antioxidant, spice. Clinical trials indicate curcumin may reduce symptom severity in diverticulitis, though bioavailability challenges exist.
Cytochrome P450 – Family of enzymes involved in drug metabolism and synth… #
Related terms: xenobiotic metabolism, hepatic enzymes. Certain dietary components (e.g., grapefruit) can inhibit CYP enzymes, altering medication efficacy in diverticulitis treatment.
Deoxyribonucleic Acid (DNA) – Genetic material encoding proteins #
Related terms: RNA, gene expression, epigenetics. Nutrients such as folate and B12 influence DNA methylation, affecting inflammatory gene regulation.
Dietary Reference Intake (DRI) – Set of reference values for nutrient int… #
Related terms: RDA, AI, UL. Tailoring DRIs to individual energy needs assists in developing therapeutic diets for diverticulitis patients.
Digestive Enzyme Replacement Therapy (CERT) – Supplementation of pancreat… #
Related terms: lipase, amylase, protease. CERT may be indicated when pancreatic insufficiency co‑exists with diverticulitis, improving nutrient absorption.
Digestive Hormone – Peptides regulating GI function (e #
g., gastrin, secretin). Related terms: endocrine, motility, secretion. Understanding hormone responses helps predict patient tolerance to high‑protein or high‑fat meals.
Digestibility – Proportion of a nutrient that is absorbed and utilized #
Related terms: bioavailability, assimilation. Protein digestibility scores guide selection of high‑quality protein sources for postoperative patients.
Dolichol – Polyprenol lipid involved in N‑glycosylation of proteins #
Related terms: glycoprotein synthesis, endoplasmic reticulum. While not a major dietary component, dolichol metabolism reflects cellular stress pathways relevant to mucosal integrity.
Dopamine – Catecholamine neurotransmitter influencing GI motility #
Related terms: sympathetic nervous system, prolactin inhibition. Certain foods (e.g., bananas) contain dopamine precursors; excessive intake may affect bowel patterns.
Duodenal Starch Digestion – Process mediated by salivary and pancreatic a… #
Related terms: maltase, isomaltase. Impaired duodenal digestion can lead to rapid transit and fermentative gas production, aggravating diverticulitis discomfort.
Enteric Nervous System (ENS) – Network of neurons governing GI function #
Related terms: myenteric plexus, submucosal plexus. Nutrient‑induced modulation of ENS (e.g., short‑chain fatty acids) can improve motility and reduce spasm.
Enteric #
Coated Tablet – Dosage form designed to resist gastric acid and dissolve in the intestine. Related terms: delayed‑release, pH‑dependent. For patients with ulcerated diverticula, enteric coating may reduce gastric irritation from oral supplements.
Enterocyte – Epithelial cell lining the small intestine responsible for n… #
Related terms: brush border, microvilli. Damage to enterocytes from inflammation impairs absorption of amino acids, vitamins, and minerals.
Essential Fatty Acid – Fatty acids that must be obtained from diet (linol… #
Related terms: omega‑6, omega‑3, deficiency. Deficiency can compromise cell membrane fluidity and inflammatory regulation in colonic tissue.
Fermentation – Microbial breakdown of nondigestible carbohydrates to gase… #
Related terms: colonic microbiota, SCFA, prebiotics. Controlled fermentation via resistant starch supports butyrate production, aiding mucosal healing.
Fibroblast Growth Factor (FGF) – Family of growth factors involved in tis… #
Related terms: angiogenesis, epithelial proliferation. Nutritional status influences FGF expression; adequate protein and micronutrients promote regenerative processes after diverticulitis surgery.
Folate – Water‑soluble B‑vitamin (B9) essential for nucleotide synthesis #
Related terms: folic acid, methylation, anemia. Folate deficiency impairs DNA synthesis in rapidly dividing colonocytes, slowing mucosal regeneration.
FODMAP – Acronym for fermentable oligo‑, di‑, mono‑saccharides and polyol… #
Related terms: low‑FODMAP diet, IBS, osmotic load. Reducing high‑FODMAP foods can lessen gas and bloating in diverticulitis patients with overlapping IBS symptoms.
Fructose Malabsorption – Inability to absorb fructose efficiently, leadin… #
Related terms: fructose‑glucose ratio, SGLT5 transporter. Identifying fructose intolerance helps tailor carbohydrate sources to minimize discomfort.
Gastrointestinal (GI) Motility – Coordinated contractions moving contents… #
Related terms: peristalsis, segmentation, dysmotility. Prokinetic nutrients (e.g., ginger) may be employed to enhance motility during recovery phases.
Glucose‑Dependent Insulinotropic Polypeptide (GIP) – Incretin hormone rel… #
Related terms: GLP‑1, insulin secretion, incretin effect. GIP influences postprandial glucose handling; high‑glycemic meals may exacerbate inflammatory pathways.
Glutamine – Conditionally essential amino acid serving as primary fuel fo… #
Related terms: nitrogen donor, gut barrier, immunomodulation. Supplementation has been shown to reduce intestinal permeability and support recovery after diverticulitis surgery.
Glycemic Index (GI) – Ranking of carbohydrate foods based on postprandial… #
Related terms: glycemic load, insulin spike. Low‑GI diets help stabilize blood glucose, limiting oxidative stress that can aggravate colonic inflammation.
Glycogen – Branched polymer of glucose stored in liver and muscle #
Related terms: glycogenolysis, glucose homeostasis. During acute diverticulitis, increased metabolic demand may deplete glycogen stores, necessitating carbohydrate replenishment.
Glucuronidation – Phase II hepatic conjugation reaction attaching glucuro… #
Related terms: detoxification, bilirubin metabolism. Certain dietary components (e.g., cruciferous vegetables) induce glucuronidation pathways, aiding clearance of inflammatory mediators.
Gut‑Associated Lymphoid Tissue (GALT) – Immune tissue in the intestinal m… #
Related terms: Peyer’s patches, IgA, mucosal immunity. Nutrients such as zinc and vitamin A support GALT function, enhancing barrier defense against pathogenic bacteria.
Helicobacter pylori – Gram‑negative bacterium associated with gastric ulc… #
Related terms: urease, dyspepsia. Though not directly linked to diverticulitis, eradication may improve overall GI health and reduce overlapping symptoms.
Hemoglobin – Iron‑containing protein in red blood cells #
Related terms: anemia, iron status, erythropoiesis. Chronic inflammation can lead to anemia of chronic disease; iron supplementation must be balanced to avoid exacerbating colonic oxidative stress.
High‑Protein Diet – Dietary pattern providing >1 #
2 g protein per kg body weight. Related terms: muscle preservation, renal load. In postoperative diverticulitis patients, high‑protein diets support wound healing, yet renal function must be monitored.
Hydrolyzed Protein – Protein broken down into peptides and free amino aci… #
Related terms: peptide formulas, easy digestion. Useful for patients with compromised digestion, hydrolyzed proteins enhance nitrogen availability for tissue repair.
Hydroxyproline – Amino acid derivative abundant in collagen #
Related terms: collagen turnover, biomarker. Urinary hydroxyproline levels can reflect collagen degradation during chronic inflammation of the colon.
Immunoglobulin A (IgA) – Antibody class predominant in mucosal secretions #
Related terms: secretory IgA, mucosal immunity. Adequate vitamin A and zinc intake promotes IgA synthesis, reinforcing the gut barrier against bacterial translocation.
Indigestible Carbohydrate – Carbohydrate fractions resistant to human enz… #
Related terms: dietary fiber, resistant starch, non‑starch polysaccharides. Serves as substrate for colonic fermentation, influencing SCFA production and stool bulk.
Insulin‑Like Growth Factor 1 (IGF‑1) – Hormone mediating anabolic effects… #
Related terms: protein synthesis, muscle mass. Nutritional status, especially protein intake, modulates IGF‑1 levels, impacting healing after diverticulitis surgery.
Iron Absorption – Process occurring primarily in the duodenum; enhanced b… #
Related terms: ferric, ferrous, anemia. Inflammation can down‑regulate ferroportin, reducing iron uptake; dietary strategies must consider both quantity and enhancers.
Ketogenesis – Hepatic production of ketone bodies from fatty acids during… #
Related terms: β‑hydroxybutyrate, acetoacetate. While ketogenic diets are not standard for diverticulitis, understanding ketogenesis helps manage patients on low‑carb regimens for comorbidities.
Lactase – Enzyme that hydrolyzes lactose into glucose and galactose #
Related terms: lactose intolerance, disaccharidase. Lactase deficiency may cause bloating and diarrhea, mimicking diverticulitis symptoms; lactose‑free options can improve tolerance.
Leptin – Adipokine regulating appetite and energy expenditure #
Related terms: satiety hormone, obesity. Elevated leptin in obesity is associated with low‑grade inflammation; weight‑management strategies incorporate leptin‑modulating nutrients.
Lipid Peroxidation – Oxidative degradation of polyunsaturated fatty acids #
Related terms: malondialdehyde, antioxidants. Excess lipid peroxidation damages cell membranes; antioxidant‑rich diets mitigate this risk in inflamed colonic tissue.
Long‑Chain Triglyceride (LCT) – Fat molecules with fatty acid chains >12… #
Related terms: chylomicron, digestion. LCTs require bile salts for emulsification; bile‑acid malabsorption can impede LCT digestion, leading to steatorrhea.
Macronutrient – Nutrient required in gram quantities #
carbohydrate, protein, fat. Related terms: energy source, dietary pattern. Balancing macronutrients is crucial for maintaining energy balance while controlling inflammatory triggers in diverticulitis.
Meal Timing – Scheduling of food intake throughout the day #
Related terms: circadian rhythm, metabolic flexibility. Regular meal patterns support stable glucose levels and gut motility; erratic timing may exacerbate dysbiosis.
Medium‑Chain Triglyceride (MCT) – Fat with fatty acid chains of 6‑12 carb… #
Related terms: ketone production, rapid oxidation. MCT oil can provide energy in patients with fat malabsorption, but excessive intake may cause gastrointestinal upset.
Micronutrient – Vitamin or mineral required in milligram or microgram amo… #
Related terms: trace element, deficiency. Deficiencies in zinc, selenium, and vitamins D and C can impair immune function and wound healing in diverticulitis patients.
Mineral Absorption – Uptake of inorganic elements in the small intestine #
Related terms: active transport, passive diffusion. Phytates and oxalates in plant foods can inhibit calcium and iron absorption; processing methods (soaking, fermentation) reduce inhibitors.
Monounsaturated Fatty Acid (MUFA) – Fatty acid with one double bond (e #
g., oleic acid). Related terms: olive oil, lipid profile. MUFAs improve lipid profiles and possess anti‑inflammatory properties, making them suitable fat sources for diverticulitis diets.
Mucosal Barrier – Physical and immunological lining protecting the intest… #
Related terms: tight junctions, mucus layer. Nutrients such as glutamine, zinc, and butyrate strengthen the barrier, reducing bacterial translocation.
Neurotransmitter – Chemical messenger influencing gut–brain axis #
Related terms: serotonin, GABA, enteric nervous system. Dietary precursors (tryptophan for serotonin) can affect motility and pain perception in diverticulitis.
Non‑Starch Polysaccharide (NSP) – Fiber component not derived from starch… #
Related terms: insoluble fiber, soluble fiber. NSPs vary in fermentability; pectin (soluble) yields SCFA, whereas cellulose (insoluble) provides bulk.
Omega‑3 Fatty Acid – Polyunsaturated fatty acids with a double bond at th… #
g., EPA, DHA). Related terms: eicosapentaenoic acid, anti‑inflammatory. Supplementation reduces production of pro‑inflammatory eicosanoids, beneficial in diverticulitis management.
Omega‑6 Fatty Acid – Polyunsaturated fatty acids with the first double bo… #
g., linoleic acid). Related terms: arachidonic acid, pro‑inflammatory. High omega‑6 to omega‑3 ratios can promote inflammation; dietary balance is essential.
Oxidative Stress – Imbalance between reactive oxygen species (ROS) produc… #
Related terms: free radicals, lipid peroxidation. Antioxidant‑rich foods (berries, leafy greens) mitigate oxidative damage in inflamed colon tissue.
Pancreatic Enzyme Supplementation – Oral administration of lipase, amylas… #
Related terms: CRE (creon), malabsorption. Indicated when pancreatic insufficiency co‑exists with diverticulitis, improving nutrient absorption and reducing steatorrhea.
Parenteral Nutrition (PN) – Intravenous delivery of nutrients, bypassing… #
Related terms: total PN, peripheral PN. Used when enteral feeding is contraindicated; formulations must provide adequate protein, electrolytes, and micronutrients while monitoring for infection risk.
Peptide Transporter 1 (PEPT1) – Intestinal transporter facilitating di‑ a… #
Related terms: amino acid absorption, hydrolyzed formulas. PEPT1 efficiency can be reduced by inflammation, affecting protein nutrition.
Phytate – Inorganic compound (inositol hexakisphosphate) present in whole… #
Related terms: mineral chelator, anti‑nutrient. Phytate binds iron, zinc, and calcium, decreasing their bioavailability; soaking, sprouting, or fermentation reduces phytate content.
Polyphenol – Plant secondary metabolites with antioxidant activity #
Related terms: flavonoids, resveratrol. Polyphenols modulate gut microbiota composition and inflammatory signaling pathways, offering adjunctive benefits in diverticulitis care.
Prebiotic – Non‑digestible food component that selectively stimulates gro… #
Related terms: inulin, fructooligosaccharides (FOS). Prebiotic fibers increase SCFA production, especially butyrate, supporting colonic health.
Protein‑Energy Malnutrition (PEM) – State of inadequate protein and calor… #
Related terms: kwashiorkor, marasmus. PEM impairs immune response and wound healing; aggressive nutritional rehabilitation is critical after diverticulitis surgery.
Protein Digestibility‑Corrected Amino Acid Score (PDCAAS) – Method evalua… #
Related terms: DIAAS, limiting amino acid. Selecting proteins with high PDCAAS ensures sufficient essential amino acids for tissue repair.
Probiotic – Live microorganisms that confer health benefits when administ… #
Related terms: Lactobacillus, Bifidobacterium. Probiotics may reduce postoperative infection rates and modulate inflammation in diverticulitis patients.
Pyruvate – End product of glycolysis; can enter aerobic respiration or be… #
Related terms: lactate dehydrogenase, anaerobic metabolism. Accumulation of lactate in hypoxic colonic tissue can exacerbate inflammation.
Quercetin – Flavonoid with potent antioxidant and anti‑inflammatory actio… #
Related terms: citrus fruits, onion, bioavailability. Quercetin inhibits NF‑κB signaling, potentially reducing cytokine production in diverticulitis.
Raffinose – Trisaccharide composed of galactose, glucose, and fructose; c… #
Related terms: oligosaccharide, fermentation. High‑raffinose foods (beans, cabbage) may cause gas and bloating; low‑FODMAP guidance helps identify tolerable sources.
Refeeding Syndrome – Metabolic disturbance occurring after rapid reintrod… #
Related terms: hypophosphatemia, electrolyte shifts. Gradual caloric increase with electrolyte monitoring prevents complications in diverticulitis patients recovering from prolonged NPO status.
Renal Function – Ability of kidneys to filter blood, excrete waste, and m… #
Related terms: glomerular filtration rate, creatinine. High protein or electrolyte loads must be adjusted for patients with compromised renal function.
Resistant Starch (RS) – Starch fraction resistant to digestion in the sma… #
Related terms: RS1‑RS5 classification, fermentable fiber. RS promotes butyrate synthesis, improves colonic mucosal health, and may reduce diverticular pressure.
Riboflavin – Water‑soluble vitamin (B2) involved in redox reactions as FA… #
Related terms: flavin adenine dinucleotide, energy metabolism. Deficiency can impair oxidative metabolism, affecting tissue repair processes.
Rising Gastric pH – Increase in stomach acidity due to reduced acid secre… #
Related terms: hypochlorhydria, bacterial overgrowth. Elevated pH may alter protein denaturation, influencing digestion efficiency.
Rising Serum Lipopolysaccharide (LPS) – Indicator of bacterial endotoxin… #
Related terms: endotoxemia, systemic inflammation. Nutritional strategies that strengthen mucosal barrier reduce LPS leakage.
Ruminant‑Derived Protein – Protein sourced from cattle, sheep, or goat pr… #
Related terms: casein, whey, meat protein. Provides high‑quality amino acids; however, saturated fat content should be considered for cardiovascular risk.
Saccharomyces boulardii – Probiotic yeast used to prevent antibiotic‑asso… #
Related terms: yeast probiotic, gut flora. May reduce incidence of postoperative infections in diverticulitis patients receiving broad‑spectrum antibiotics.
Saturated Fat – Fatty acids with no double bonds, typically solid at room… #
Related terms: cholesterol, LDL. Excess saturated fat can promote inflammation; limiting intake to <10 % of total calories is recommended.
Scavenger Receptor – Cell‑surface protein that binds modified lipids and… #
Related terms: CD36, macrophage activation. Dietary polyphenols can modulate scavenger receptor activity, influencing inflammatory cell clearance.
Serum Albumin – Major plasma protein reflecting nutritional status and he… #
Related terms: hypoalbuminemia, oncotic pressure. Low albumin correlates with poor wound healing and increased postoperative complications.
Serum Electrolytes – Concentrations of sodium, potassium, chloride, and b… #
Related terms: fluid balance, hyponatremia. Electrolyte disturbances are common during acute diverticulitis due to fluid shifts and diuretic use.
Short‑Chain Fatty Acid (SCFA) – Fermentation products (acetate, propionat… #
Related terms: microbial metabolism, colonocyte energy. SCFAs lower colonic pH, inhibit pathogen growth, and stimulate anti‑inflammatory pathways.
Silicon – Trace mineral involved in connective tissue formation #
Related terms: collagen synthesis, bone health. Dietary sources include whole grains and cereals; deficiency may affect tissue integrity but is rare.
Sodium‑Glucose Cotransporter 1 (SGLT1) – Intestinal transporter mediating… #
Related terms: carbohydrate absorption, dipeptide transport. Inflammation can down‑regulate SGLT1, reducing glucose absorption efficiency.
Soluble Fiber – Fiber that dissolves in water forming a viscous gel #
Related terms: pectin, beta‑glucan, fermentable fiber. Soluble fiber slows gastric emptying, improves glycemic control, and provides substrate for SCFA production.
Somatostatin – Hormone that inhibits secretion of many other GI hormones #
Related terms: inhibitory peptide, endocrine regulation. Somatostatin analogs may be used experimentally to reduce colonic secretions during severe inflammation.
Soy Protein Isolate – Highly purified protein derived from soybeans #
Related terms: plant protein, isoflavones. Provides a complete amino acid profile; phytoestrogens may have mild anti‑inflammatory effects, though individual tolerance varies.
Spirulina – Cyanobacterium rich in protein, phycocyanin, and micronutrien… #
Related terms: algae supplement, antioxidant. Emerging evidence suggests spirulina may modulate gut microbiota and reduce oxidative stress, but clinical data in diverticulitis are limited.
Starch Digestion – Hydrolysis of amylose and amylopectin by amylase and b… #
Related terms: maltase, isomaltase. Rapid starch digestion can cause postprandial glucose spikes, while resistant starch offers colonic benefits.
Steatorrhea – Fatty, foul‑smelling stools indicating fat malabsorption #
Related terms: pancreatic insufficiency, maldigestion. Management includes medium‑chain triglycerides and pancreatic enzyme supplementation.
Stratified Nutrition – Tiered approach assigning nutrition support based… #
g., oral, enteral, parenteral). Related terms: nutrition algorithm, step‑up method. Facilitates timely escalation of support for diverticulitis patients with varying degrees of intestinal compromise.
Sucrase‑Isomaltase – Brush‑border enzyme complex hydrolyzing sucrose and… #
Related terms: disaccharidase deficiency, carbohydrate malabsorption. Deficiency can cause osmotic diarrhea, mimicking diverticulitis exacerbations.
Sulfate‑Reducing Bacteria (SRB) – Microbes that produce hydrogen sulfide… #
Related terms: dysbiosis, colonic inflammation. High‑protein, low‑fiber diets may favor SRB growth, potentially aggravating mucosal irritation.
Syndecan‑1 – Cell‑surface proteoglycan shedding reflects epithelial damag… #
Related terms: biomarker, mucosal injury. Elevated fecal syndecan‑1 levels have been associated with active diverticulitis.
Thiamine – Water‑soluble vitamin (B1) essential for carbohydrate metaboli… #
Related terms: beriberi, energy production. Thiamine deficiency can impair ATP generation, limiting tissue repair capacity.
Thyroid Hormone – Hormones (T3, T4) regulating basal metabolic rate #
Related terms: hypothyroidism, hypermetabolism. Thyroid status influences caloric needs; untreated hypothyroidism may reduce gastrointestinal motility.
Trans‑Fatty Acid – Unsaturated fatty acid with at least one trans double… #
Related terms: industrial processing, inflammatory. Trans‑fats increase LDL and promote inflammation; they are discouraged in diverticulitis dietary plans.
Triglyceride – Main form of dietary fat consisting of glycerol esterified… #
Related terms: lipolysis