A friend asked, I can sleep suddenly in recent days, and I don't lack sleep at night, but I will feel sleepy when I am a little idle during the day. If such a problem suddenly appears under the condition of insufficient sleep, especially after forty or fifty years old, we should consider the problem of insufficient blood supply to the brain, because it is the precursor or foundation of many diseases and must be paid attention to.

What causes insufficient blood supply to the brain? First of all, the problem of cervical vertebra, the dislocation of the joints of neck 5 and neck 6, stimulating vertebral artery will cause arterial stenosis or vasospasm, and the decrease of blood flow will lead to insufficient blood supply to local cerebral vessels. If you sit at your desk for a long time and usually lack exercise, you should take this into account when you are sleepy. Secondly, it may be caused by hemodynamic disorder. This mainly happens when blood pressure decreases and cardiac output decreases. This situation is more common in summer. On the one hand, it is hot in summer, blood vessels dilate, and sweating a lot at the same time. If this person usually does little exercise, or is old, and his heart and muscles are not strong, he will often feel sleepy in summer. This kind of people will obviously improve after eating American ginseng, because American ginseng can increase the muscle strength of the heart, maintain blood pressure, and the cerebral vessels are not ischemic, so they are not sleepy.

Then the blood viscosity increases, the blood is slow, and there can also be insufficient blood supply. This situation is more common in people with obesity and high blood lipids. If you drink less water, these people are prone to drowsiness at ordinary times, and they are more prone to drowsiness in winter, but the more serious problem will be in the early morning, which is a stroke caused by blood clots. This kind of person, first of all, should reduce fat and lose weight, get up in the morning and replenish water in time, and even take antihypertensive drugs in the morning to avoid this high incidence period in the morning.

Sleepiness may also be caused by microthrombosis in cerebral blood vessels. Micro-thrombus is mostly due to the shedding of atherosclerotic plaque, forming micro-embolus in blood flow, blocking blood vessels as blood flows to arterioles, and local blood supply deficiency will occur in the brain. Atherosclerotic plaques are still related to obesity, hyperlipidemia and hypertension. If the weight and blood lipid are not reduced, even if the drowsiness is reduced, there is still the risk of thrombosis or further expansion.