Essential Vitamins and Minerals Course

Explains how vitamin A (retinol) supports vision, immunity, reproduction, and growth, and stores in fat as lipid-soluble compounds. Covers deficiency risks, xerophthalmia, nyctalopia, dietary sources, intakes, and upper limit.

Explore how vitamin C (ascorbic acid) supports collagen synthesis and wound healing, its dietary sources, and the signs of deficiency such as scurvy.

Vitamin D, or calciferol, regulates calcium to build bones and teeth and supports immunity; sun exposure activates it while dietary sources maintain levels to prevent rickets and osteomalacia.

Act as a fat-soluble antioxidant stored in fat tissues, protecting against free radicals. Maintain 50 mg daily, up to 90 mg for pregnancy or lactation, to prevent retinopathy and neuropathy.

Explore vitamin k's critical roles in coagulation, as a coenzyme or cofactor, and its importance for bone health and maturation, while examining gut bacteria-driven maturation, deficiency risks, and dietary sources.

Learn how vitamin B1 (thiamine) powers energy production and supports the nervous system, review deficiency syndromes like beriberi and Wernicke-Korsakoff, and identify key dietary sources and intake guidelines.

Explore riboflavin's role in energy production and growth, its link to thyroid-related deficiency, risk groups like vegetarians, dietary sources, and daily intake guidelines.

Vitamin B3, or niacin, is an essential, water-soluble vitamin that fuels energy production and supports skin and nervous system health, with deficiency causing pellagra.

Learn how vitamin B3, aka pantothenic acid, drives fat breakdown for energy and supports adrenal hormone production. Discover dietary sources, deficiency symptoms, recommended intake, and toxicity risks.

Discover the role of vitamin b6 in nervous system function, neurotransmitter synthesis, and immunity, note anti-tb drugs as a deficiency risk, and learn sources like liver, tuna, salmon, fortified cereals.

Vitamin B7, biotin, supports the nervous system and liver metabolism and keeps hair and skin healthy, with sources like beef liver, eggs, salmon, avocados, and nuts at 30–35 mcg daily.

Explore vitamin B9's role in DNA and RNA synthesis and rapid cell division, and learn risk factors, megaloblastic anemia signs, and dietary sources with 400–600 mcg daily.

Explore vitamin B11, or salicylic acid, and its roles in growth, energy production, regulation of red and white blood cells, immunity; learn about neural tube development, pregnancy considerations, food sources.

Explore vitamin B12 (cobalamin) and its roles in myelination, red blood cell formation, and DNA synthesis; note methionine synthase and methylmalonyl CoA mutase as cofactors, and ileum absorption with symptoms.

Calcium tightly regulates bone and teeth growth and remodeling, supports blood clotting, muscle contraction, and nerve signaling, while maintaining balance to prevent hypocalcemia or hypercalcemia and related symptoms.

Explore iron's role in hemoglobin and development, recognize iron deficiency anemia symptoms like fatigue and pica, and compare heme and non-heme iron with intake guidelines.

Explains magnesium's roles in the immune and nervous systems, heart contractility, and glucose regulation, lists almonds and pumpkin seeds as sources, and notes deficiency or toxicity risks with kidney problems.

Zinc supports immunity, wound healing, blood clotting, thyroid function, and taste and smell. In pregnancy and fetal development, deficiency causes loss of taste or smell and poor appetite.

Regulate potassium within a narrow window to maintain intravascular and cellular fluid and blood pressure. The skin, kidneys, and GI tract regulate levels, with sources like potatoes, spinach, and dairy.

Sodium regulates fluid balance and intravascular mineral balance and nervous system impulses. Low sodium during dehydration causes nausea, headaches, lethargy, seizures; hyponatremia can occur and is treated by drinking water.

Identify diabetes symptoms such as increased thirst and urination, weight loss, fatigue, and blurred vision, and learn diagnostic criteria like HbA1c above 6.5 and fasting glucose tests.

Learn to lower cholesterol by achieving total under 200, LDL under 100, HDL over 40–45, and triglycerides under 150 through diet, exercise, and smoking cessation.

Manage bedwetting in children by ruling out infections with urine analysis, applying sleep and urine hygiene, using enuresis alarms, and desmopressin to reduce urine output.

Infants exhibit unconjugated (indirect) bilirubin due to immature bilirubin conjugation enzymes, worsened by breast milk–related dehydration. Continue breastfeeding; phototherapy is used at bilirubin 20 and exchange therapy at 25.

Gluten triggers celiac disease inflammation, destroying villi and causing malabsorption in the duodenum, with dermatitis herpetiformis and antibodies (IgA anti-tTG, anti-endomysial, anti-DGP); treatment is a gluten-free diet.

Gallbladder stones develop slowly and most are symptomless. Some stones pass; many cause inflammation and pancreatitis or jaundice; prevent with gradual weight loss, high fiber, and less fat.

Lactose intolerance results from lacking lactase, causing lactose to reach the gut and trigger bloating, diarrhea, and abdominal pain; diagnosis includes positive hydrogen breath test and acidic stool, no steatorrhea.

Explore the signs of liver failure, including jaundice, itching, spider angiomas, and coagulation issues. Learn how portal hypertension, hepatorenal syndrome, and cirrhosis develop.

Describe syndrome of inappropriate antidiuretic hormone secretion, including euvolemic hyponatremia from elevated ADH and ectopic sources, diagnose via water deprivation test, and treat with salt tablets and fluid restriction.

Whipple disease is a Tropheryma whipplei infection of the small intestine causing villous atrophy and foamy macrophages with PAS positivity; treat with long-term antibiotics such as ceftriaxone with folate inhibitors.

Identify food poisoning bacteria by symptoms: vomiting suggests Staphylococcus aureus toxins; watery diarrhea suggests Clostridium perfringens; bloody diarrhea suggests Salmonella or Shigella, with Norovirus and Campylobacter as other common causes.

Identify key pathogens like Campylobacter, E. coli, Listeria, Norovirus, Salmonella, and Staphylococcus aureus, and learn safe handling, washing, cooking, and defrosting, and know when to seek care for severe symptoms.

Explore the prevalence, spectrum of symptoms, and practical self-care for food poisoning, emphasizing hydration with electrolytes and coconut water, and knowing when to seek medical advice.

Bismuth binds to gastric and duodenal ulcers, boosts bicarbonate secretion to form a protective alkaline area that aids healing, and treats H. pylori and traveler's diarrhea.

Explore statins and other lipid-lowering agents, their mechanisms and key side effects like hepatotoxicity and myopathy for secondary prevention in coronary artery disease.

Acetaminophen inhibits central cyclooxygenase to reduce fever and provide mild analgesia, with no peripheral anti-inflammatory action; overdose forms napqi that depletes hepatic glutathione, causing liver toxicity, treat with NAC.

Explore antihistamines: first-generation H1 blockers affect H1, alpha, and muscarinic receptors with sedation. Second-generation antihistamines selectively block H1, while H2 blockers reduce gastric acid for peptic ulcers and gastritis.

Inhibit the hydrogen potassium ATPase in parietal cells with proton pump inhibitors, permanently lowering stomach acidity for gastritis, peptic ulcers, reflux, and stress ulcer prophylaxis, with risks like infections.

Aspirin irreversibly inhibits cyclooxygenase, blocking COX-1 at low doses for platelets and gastric mucosa protection and COX-2 at high doses for anti-inflammatory effects, with risks including Reye's syndrome and ulcers.

Antagonize muscarinic receptors, increasing sympathetic drive. Reduce bladder and GI motility, cause dry mouth and mydriasis, and trigger rapid pulse and hyperthermia.

Explain how heparin instantly thins blood by inhibiting factors II and X, its use in embolic conditions and pregnancy, reversal with protamine sulfate, and low molecular weight heparin differences.

Explore the four laxative groups: bulk laxatives trap water with fiber, osmotic laxatives draw water into the lumen, stimulant laxatives boost motility via enteric nerves, and emollients prevent water loss.

Explore how levothyroxine (T4) and liothyronine (T3) treat hypothyroidism, boosting bone growth, brain maturity, beta receptor activation, and basal metabolic rate, with pregnancy increasing thyroxine binding globulin and dosing needs.

Treats type 2 diabetes and may aid weight loss by inhibiting hepatic gluconeogenesis via mitochondrial glycerol-3-phosphate dehydrogenase, and increases glycolysis and glucose uptake; risk of lactic acidosis with renal insufficiency.

Metoclopramide blocks dopamine D2 receptors in central and peripheral sites as a prokinetic and antiemetic, increasing gastric motility and LES tone for gastroparesis and chemotherapy- or migraine-related nausea.

Learn how NSAIDs block cyclooxygenase 1 and 2 to inhibit prostaglandin synthesis and treat back pain, with the strain mnemonic noting ulcers, PDA, indomethacin, and renal effects.

Block serotonin receptors on the vagus nerve with Ondansetron, granisetron, and dolasetron, an antiemetic that affects central and peripheral pathways; watch for serotonin syndrome risk, QT prolongation, constipation, and headache.

Orlistat inhibits pancreatic lipase to reduce fat absorption with fat-rich meals, aiding weight loss but risking loss of fat-soluble vitamins A, D, E, and K and steatorrhea.

Penicillins bind penicillin binding protein to inhibit peptidoglycan crosslinking, causing wall defects and bacterial degradation, targeting pneumococci, enterococci, Neisseria, syphilis, Staph, Actinomyces, anthrax, and Clostridium, with beta-lactamase inhibitors countering resistance.

Warfarin acts as an anticoagulant by inhibiting vitamin K epoxide reductase, depleting vitamin K–dependent clotting factors, increasing prothrombin time, and interacting with NSAIDs, aspirin, barbiturates, bleeding, and skin necrosis.