Why does chronic alcohol abuse increase the risk of Wernicke-Korsakoff syndrome, even with adequate caloric intake?

💡 Explanation

Alcohol interferes with thiamine absorption in the gut and its utilization in the brain because it damages the intestinal lining and impairs the thiamine transporter proteins. Therefore, thiamine deficiency becomes likely, rather than other vitamin imbalances, causing neurological damage characteristic of Wernicke-Korsakoff.

• Why does an asthma patient experience difficulty breathing during an attack, even with increased respiratory effort?
• Following partial hepatectomy, which outcome is most promoted by the liver's regenerative response?
• Which consequence results when melanocyte-stimulating hormone (MSH) overstimulates receptors?
• Which membrane polarization results when potassium channels close?
• A burn patient receives a skin graft; immunosuppressants prevent rejection. Which mechanism limits collagen synthesis, delaying wound healing, despite the graft?
• Why does peripheral artery disease (PAD) cause leg pain during exercise, which is relieved by rest?