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.
People who have early onset Alzheimer's may be in any stage of dementia â early stage, middle stage or late stage. The disease affects each person differently and symptoms will vary. If you are experiencing memory problems: 1  Have a comprehensive medical evaluation with a doctor who specializes in Alzheimer's 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.