True or False: Multiple sclerosis is a chronic degenerative disease affecting the myelin sheath of nerves.

Multiple sclerosis (MS) is indeed a chronic degenerative disease that primarily impacts the myelin sheath, which is the protective covering surrounding nerve fibers in the central nervous system. In MS, the immune system mistakenly attacks the myelin, leading to inflammation and damage. This disruption in the myelin sheath can cause various neurological symptoms due to impaired communication between the brain and the rest of the body. The chronic nature of MS means that it persists over time, often leading to progressive neurological disability. This understanding confirms that the statement is accurate.