Korsakoff's syndrome is memory damage primarily due to

Korsakoff's syndrome is memory damage primarily due to

• A. Vitamin B12 deficiency
• B. Chronic alcoholism
• C. Vitamin C deficiency
• D. Traumatic brain injury

Answer: (B)

Korsakoff's memory damage arises from a thiamine (vitamin B1) deficiency, most often linked to chronic alcoholism. Thiamine is essential for brain energy metabolism, and when it's deficient, it damages memory-related brain structures, especially the mammillary bodies and thalamic connections. This leads to profound difficulties forming new memories and retrieving recent ones, with common features like confabulation. While alcohol use is a key risk factor, the core issue is the nutritional deficiency harming memory circuits. Other deficiencies or injuries (such as B12 deficiency, vitamin C deficiency, or traumatic brain injury) can impair memory as well, but they produce different patterns and do not explain the classic Korsakoff memory profile driven by thiamine shortage.

Korsakoff's memory damage arises from a thiamine (vitamin B1) deficiency, most often linked to chronic alcoholism. Thiamine is essential for brain energy metabolism, and when it's deficient, it damages memory-related brain structures, especially the mammillary bodies and thalamic connections. This leads to profound difficulties forming new memories and retrieving recent ones, with common features like confabulation. While alcohol use is a key risk factor, the core issue is the nutritional deficiency harming memory circuits. Other deficiencies or injuries (such as B12 deficiency, vitamin C deficiency, or traumatic brain injury) can impair memory as well, but they produce different patterns and do not explain the classic Korsakoff memory profile driven by thiamine shortage.