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.
Stroke is a disease that occurs in the brain. Usually brain death occurs due to ischemia (lack of oxygen supply) or haemorrhage (blood vessel burst and bled in the brain). Brain tissue depends on the glucose. Brain needs the continuous supply of glucose and oxygen otherwise it will die.