Marchiafava-Bignami disease, a rare affliction of alcoholic males, is described in a severely malnourished Malaysian Indian male who took no alcohol. It is the second report of the disease in an Asian and represents one of the few cases which have occurred in non-alcoholics. Besides the pathognomonic demyelination of the central portion of the corpus callosum, there were striking demyelinative plaques in the subcortical white matter. In addition, neuropathological features of Wernicke's disease were found suggesting that severe malnutrition with thiamine deficiency was probably the cause of his demise.