Classification: Fat-Soluble and Water-Soluble
Start with the big picture
Fat-soluble vitamins depend on bile and dietary lipids for intestinal absorption and travel into circulation with chylomicrons; water-soluble vitamins generally enter portal blood more directly. Their storage and clinical patterns also differ: fat-soluble vitamins can accumulate in the liver and adipose tissue, whereas water-soluble vitamins usually have limited stores, with B₁₂ as an exception. Deficiencies of water-soluble vitamins may develop sooner, while fat-soluble deficiencies can take longer to appear. Toxicity is more associated with fat-soluble vitamins, although exceptions exist in both groups. The classification also helps connect vitamin status with malabsorption, renal disease, alcoholism, cooking losses, and distinct functional roles.
What you'll learn
- Classify vitamins as fat-soluble or water-soluble.
- Compare how each group is absorbed and transported.
- Describe differences in storage, deficiency timing, and toxicity risk.
- Relate vitamin solubility to malabsorption, renal disease, and alcoholism.
- Distinguish the broad functional roles of the two groups.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
