Final answer:
Subacute combined degeneration of the spinal cord is due to a deficiency in Vitamin B12. Rickets in children is caused by a deficiency in Vitamin D. Folate deficiency during pregnancy can lead to neural tube defects.
Step-by-step explanation:
Subacute combined degeneration of the spinal cord is a neurological condition that results from a deficiency in Vitamin B12. This condition affects the myelin sheath, which is essential for proper neuronal function and conduction of impulses along the nerves. A lack of Vitamin B12 can lead to various neurological issues, including degeneration of the spinal cord that presents with both sensory and motor deficits.
Rickets is a disease that results in improper bone development in children and is caused by a deficiency in Vitamin D. This vitamin is crucial for the absorption of calcium, and without it, bones cannot develop properly, leading to the characteristic bone deformities seen in rickets.
A deficit in Folate or folic acid, particularly during early pregnancy, can result in neural tube defects such as spina bifida. It has been shown that a supplemental intake of folate can reduce the incidence of these types of birth defects significantly.