The old man frequently yawns and should enhance vigilance

The old man frequently yawns and should enhance vigilance
The person who suffers from hypertension, brain arteriosclerosis, because of atherosclerosis, are in charge of becoming narrow, the wall elasticity of blood vessel lower, cause the blood quantity of flowing into the brain to reduce, and the brain is very sensitive to the oxygen, only account for about 2% of weight of brains, but should consume about 25% of oxygen demands of whole body. So, ischemic for brain, at the time of oxygen deficiency, will cause the yawn frequently.

As everyone knows, common people often make several yawns, can make the feeling of fatigue lighten temporarily while feeling tired, however, the middle-aged and elderly people, especially hypertension, brain arteriosclerosis person, if yawn again and again, it is probably the omen of the ischemic cerebral apoplexy, should enhance vigilance.
There are ischemic the patient of cerebral apoplexy disease, about 1 week before not having illness coming on on that there is be 70%-80%, will because brain ischemic, oxygen deficiency and last phenomenon yawned frequently. Its reason is, the person who suffers from hypertension, brain arteriosclerosis, because of atherosclerosis, in charge of and narrowly, the wall elasticity of blood vessel is lowered, cause the blood quantity of flowing into the brain to reduce, and the brain is very sensitive to the oxygen, only account for about 2% of weight of brains, should consume about 25% of oxygen demands of whole body.

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