Williams Syndrome
- Microdeletion Of Long Arm Of Chromosome 7
 - Elastin Gene
 - Elfin Facies
 - Intellectual Disability 
 - Extreme Friendliness with Strangers
 - Well Developed Verbal Skills
 - Cardiovascular Problems
 - Hypercalcemia
 - Increased Sensitivity To Vitamin D
 
Vitamin A (Retinol) Function and Deficiency
- Retinol
 - Constituent of Visual Pigments
 - Differentiation of Epithelial Cells into Specialized Tissue
 - Night Blindness
 - Dry Skin
 - Used to Treat Measles
 - Antioxidant
 
Ergocalciferol (Vitamin D2)
- Vitamin D2
 - Hypoparathyroidism
 - Rickets
 - Hypophosphatemia
 - Fatigue
 - Constipation
 - Hypercalcemia
 - Kidney Stones
 
Cholecalciferol (Vitamin D3)
- Vitamin D3
 - Dietary Supplement
 - Vitamin D Deficiency
 - Fatigue
 - Constipation
 - Hypercalcemia
 - Kidney Stones
 - More Effective Than Ergocalciferol
 - Hypervitaminosis D
 
Vitamin D Deficiency
- Rickets in children
 - Bending bones
 - Rachitic rosary
 - Breast milk has decreased vitamin D
 - Osteomalacia in adults
 - Tetany from Hypocalcemia
 
Vitamin E (Alpha-tocopherol)
- Antioxidant
 - Fat Malabsorption Syndrome
 - Alpha-TTP Deficiency
 - Bleeding
 - Increased Risk Hemorrhagic Stroke
 - Limit Doses < 200 IU per Day
 - Nuts and Whole Grains
 - Vegetable Oils
 
Vitamin E Deficiency
- Antioxidant
 - Protects Erythrocytes
 - Protects from Free Radical Damage
 - Hemolytic Anemia
 - Posterior Column
 - Spinocerebellar Tract
 
Vitamin K
- Dark Green Leafy Vegetables
 - Synthesized by Intestinal Flora
 - Activated by Epoxide Reductase
 - Gamma Carboxylation of Glutamate
 - Activation of Clotting Factors II, VII, IX, X, Protein C and S
 - Deficiency with Broad Spectrum Antibiotics
 - Neonatal Hemorrhage with Increased PT and aPTT
 - Warfarin is a Vitamin K Antagonist
 
Vitamin K Deficiency
- Bleeding
 - Neonatal Hemorrhage with Increased PT and aPTT
 - Liver Disease
 - Chronic Antibiotic Use
 - Vitamin K Antagonists
 - Malabsorption
 - Dietary Deficiencies
 - Normal Bleeding Time
 - Increased PT and PTT
 - Neonatal Vitamin K Injection
 
Vitamin B1 (Thiamine)
- Branched-chain Ketoacid Dehydrogenase
 - Pyruvate Dehydrogenase
 - Alpha-ketoglutarate Dehydrogenase
 - Transketolase
 - Wernicke-Korsakoff Syndrome
 - Beriberi
 - ATP Depletion
 - Aerobic Tissues Like Brain and Heart Affected First
 - Deficiency Can Worsen with Glucose Infusion
 
Beriberi (Thiamine Deficiency)
- Thiamine Deficiency
 - Dry Beriberi
 - Polyneuritis
 - Muscle Wasting
 - Wet Beriberi
 - Dilated Cardiomyopathy
 - Edema
 
Riboflavin (Vitamin B2)
- Vitamin B2
 - FAD
 - FAD Makes 1.5 ATP
 - Succinate to Fumarate
 - Glossitis
 - Cheilosis
 - Corneal Vascularization
 
Vitamin B3 (Niacin)
- Derived from Tryptophan
 - Synthesis Requires Vitamin B6
 - Constituent of NAD+
 - Hartnup Disease
 - Carcinoid Syndrome
 - Pellagra
 - Diarrhea
 - Dermatitis
 - Dementia
 - Glossitis
 - Flushing
 
Vitamin B5 (Pantothenate)
- Pantothenate
 - Pyruvate Dehydrogenase
 - Coenzyme A
 - Fatty Acid Synthase
 - Enteritis
 - Dermatitis
 - Alopecia
 - Adrenal Insufficiency
 
Vitamin B6 (Pyridoxine)
- Pyridoxal Phosphate
 - Transamination
 - Decarboxylation
 - Glycogen Phosphorylase
 - Cystathionine Synthase
 - Heme Synthesis
 - Niacin Synthesis
 - Neurotransmitter Synthesis
 
Vitamin B6 (Pyridoxine) Deficiency
- Deficiency From Isoniazid
 - Deficiency From Oral Contraceptives
 - Seizures
 - Hyperirritability
 - Peripheral Neuropathy
 - Sideroblastic Anemia
 
Biotin (Vitamin B7)
- Carboxylation Reaction
 - Pyruvate Carboxylation to Oxaloacetate
 - Propionyl-CoA Carboxylation to Methylmalonyl-CoA
 - Acetyl-CoA Carboxylation to Malonyl CoA
 - Antibiotic Use
 - Ingestion of Raw Eggs
 - Alopecia
 - Dermatitis
 - Enteritis
 
Vitamin B9 (Folate)
- Dark Green Leafy Vegetables
 - Absorbed in Jejenum
 - Hepatic Storage
 - Dihydrofolate Reductase (DHFR)
 - Tetrahydrofolate (THF)
 - Methionine Synthase
 - Nucleotide Synthesis
 - Endothelial Protection
 
Folate Deficiency
- Macrocytic Anemia
 - Megaloblastic Anemia
 - Malabsorption
 - Dietary
 - Tea and Toast
 - Alcoholics
 - Medication-induced
 - Methotrexate
 - Trimethoprim
 - Increased Requirement
 - Hemolytic Anemia
 - Pregnancy
 
Vitamin B12 (Cobalamin) Mechanism and Deficiency
- Cobalamin
 - Large reserve pool in the liver
 - Homocysteine to methionine
 - Methylmalonyl CoA to succinyl CoA
 - Macrocytic Megaloblastic Anemia
 - Hypersegmented Neutrophils
 - Neurologic defects
 - Posterior column
 - Lateral corticospinal tract
 - Spinocerebellar tract
 
Vitamin C Mechanism and Deficiency
- Ascorbic acid
 - Antioxidant
 - Protects Against Free Radicals
 - Keeps Iron in Reduced State
 - Hydroxylation of Proline and Lysine
 - Necessary for Dopamine B Hydroxylase
 - Scurvy
 - Swollen Gums
 - Bruising
 - Poor Wound Healing
 - Hemarthrosis
 - Perifollicular Hemorrhages
 - Anemia