Human Health and Disease — BIOLOGY STD 12 Science — Question

4. All of the above

Explanation:

Wernicke's encephalopathy and Korsakoff's syndrome are different conditions but both are due to brain damage caused by lack of vitamin B₁​. Lack of vitamin B1₁ is common in people with alcoholism. Korsakoff syndrome tends to develop as Wernicke's symptoms go away.

Wernicke encephalopathy causes brain damage in lower parts of the brain called the thalamus and hypothalamus.

Laennec's cirrhosis is the disease of liver in which normal lobular architecture is lost with fibrosis and later nodular regeneration and chronic alcoholism can cause Laennec's cirrhosis.