The human brian is made up of more than 100 billion nerve cells called neurons. Each neuron is connected to as many as 25000 other neurons-so the brain has trillions and trillions of different pathways for nerve signals. Girls' brains weight 2.5% of their body weight, on average, while boy's brains weigh 2%. About 0.85 litres of blood shorts through your brain every minute. The brain may be as little as 2% of your body weight, but it demand 25% of your blood supply. An elephant's brain weighs four times as much as the human brain. However, our brains are far bigger in relation to our bodies than those of any other animal. The cerebral cortex is the outside of the brain, and if it was laid out flat, it would cover a bed. The left hemisphere (half) of the brain is usually the word side, where the speech centres are. The right half is the picture side. Conscious thoughts and actions happen in the cerebral cortex. A human brain has a cerebral cortex four times as big as a chim

 Everything You Need to Know About Alzheimer’s Disease. What is Alzheimer’s disease? Alzheimer’s disease is a progressive form of dementia. Dementia is a broader term for conditions caused by brain injuries or diseases that negatively affect memory, thinking, and behavior. These changes interfere with daily living. According to the Alzheimer’s Association, Alzheimer’s disease accounts for  60 to 80 percent  of dementia cases. Most people with the disease get a diagnosis after age 65. If it’s diagnosed before then, it’s generally referred to as early onset Alzheimer’s disease. There’s no cure for Alzheimer’s, but there are treatments that can slow the progression of the diseass. Alzheimer’s disease is a chronic ongoing condition. Its symptoms come on gradually and the effects on the brain are degenerative, meaning they cause slow decline. There’s no cure for Alzheimer’s but treatment can help slow the progression of the disease and may improve quality of life. Anyone can get Alzheimer’s