The human brain is the most complex organ in our body. No amount of technology or science has been able to equal it to date. Everything we do, every thought, action, emotion and behavior is controlled by this amazing three pound mass of tissue.
The human brain is made up of different cells, the main ones being nerve cells called neurons. Thousands of neurons are grouped together to perform different tasks.
Neurons communicate with each other through chemical signals called neurotransmitters. Millions of signals speed their ways though the brain every moment enabling it to receive and process information and send out instructions to various parts of the body.
Billions of tiny blood vessels carry oxygen, glucose, nutrients, and hormones to all parts of the brain. Although the brain comprises only about 2% of the total body weight, it receives about 25% of the body's blood supply.
The aging brain is a relatively new study. With an expected lifespan of 79 for women and 74 for men, we baby boomers make up a large and influential percentage of the population. This has triggered more research as an ever increasing older population becomes more concerned with brain fitness.
Brain cells begin dying when we are in our 20's. As our brain ages, it goes through physical and chemical changes:
These changes are a normal part of aging, they are not the cause of senility or other changes in the ability to think. With age some slight, slowing down of thought and memory are likely to occur, but do not confuse this with dementia-type illnesses like Alzheimer's which are NOT normal processes of aging.
Studies indicate that the rate of reduction in brain fitness in later life is affected by a combination of genetics, environment, disease and bad habits such as alcohol, drugs and cigarettes.
While we can't change the past or our genes, there is a lot we can do to adopt a healthy lifestyle . It can bring about positive results such as improved memory, better comprehension, and clearer thinking.