The meaning of "brain atrophy" can be imagined that "atrophy" is the size of the volume, and brain atrophy must be smaller.This is indeed the case. The appearance of the brain looks like a walnut kernel. It is composed of hundreds of millions of nerve cells and neuroslatinum cells, nerve fibers and other components that provide nutrients for these nerve cells.Elderly is a process of gradually aging, which is a long -lasting law of life.Our brain also follows this rule.After the heyday of the youth, gradually entering middle -aged and elderly, the brain will gradually aging and degenerate, manifested as the number of brain nerve cells and nerve glue cells gradually decreases.By the age of 70, the number of brain cells has decreased by 30%or more.Due to this change, the volume and weight of the brain decreased.Judging from the appearance of this "walnut kernel", it is not as plump as when it is mature. It seems that the walnut kernel has shrunk, and the surface ditch is deepened.This change in the brain can be seen on CT or magnetic resonance films. It is described in medical science that "brain back narrowing, deepening of the brain ditch, and increasing brain room", reminding us: brain atrophy.
As the age increases, the gradual occurrence of brain atrophy is a physiological phenomenon.The reduction of brain cells also reduces the memory of the elderly.At the age of 20, a person can read a look at ten lines and never forget it; 40 ~ 50 years old will feel that memory is worse than young, and learning new things is not so easy, which is also related to the reduction of brain cells.But the elderly have rich experience and experience, and can fully mobilize logical thinking to remember.As long as you use it to use the brain, the potential of the remaining brain cells of the brain can completely allow the elderly to learn and work.Therefore, we can draw a conclusion: brain atrophy does not mean dementia.
