Setting aside the notion of determining the number of individual animals on the planet for a moment, merely determining the number of species on the Earth is challenging. Science has only been able to offer estimates thus far, and totals vary greatly.
A. A. A. Multiple sclerosis, or MS, is a long-lasting disease that can affect your brain, spinal cord, and the optic nerves in your eyes. It can cause problems with vision, balance, muscle control, and other basic body functions. The effects are often different for everyone who has the disease.
Brain Disorders. As you can imagine, all of us desire a brain that is healthy and functions properly. Unfortunately, there are some who suffer from neurological disorders of the brain. A few of these disorders include: Alzheimer's disease, epilepsy, sleep disorders, and Parkinson's disease.