what can be the problem if insufficient oxygen is going to the brain?

Answer 1

I assume you know you need oxygen to live. Oxygen is spread through the bloodstream pumped from the heart through the lungs to oxygenate then to the rest of the body. Not getting enough oxygen can be from respiratory, cardiac problems, stress, smoking, poor circulation, dehydration, high altitudes

You can live with insufficient oxygen, but you experience tiredness, mental confusion, memory difficulties, listlessness, inability to think clearly, and many other more severe symptoms.

Severe oxygen loss can indicate a stroke, and of course the worst is death. Check out the link below for more detailed and thorough information.

Answer 2

When the blood pressure is not sufficient to deliver enough blood to the organs of the body, the organs do not work properly and may be permanently damaged. For example, if insufficient blood flows to the brain, brain cells do not receive enough oxygen and nutrients, and a person can feel light-headed, dizzy, or even faint. Going from a sitting or lying position to a standing position often brings out the symptoms of low blood pressure. This occurs because standing causes blood to “settle” in the veins of the lower body, and this can lower the blood pressure. If the blood pressure is already low, standing can make the low pressure worse to the point of causing symptoms. (The development of light-headedness, dizziness, or fainting upon standing caused by low blood pressure is called orthostatic hypotension. Normal individuals are able to compensate rapidly for the low pressure created by standing with the responses discussed previously and do not develop orthostatic hypotension.)

When there is insufficient blood pressure to deliver blood to the coronary arteries (the arteries that supply blood to the heart’s muscle), a person can develop chest pain (angina) or even a heart attack. When insufficient blood is delivered to the kidneys, the kidneys fail to eliminate wastes from the body, for example, urea and creatinine, and an increase in their levels in the blood occur (e.g., elevations of blood urea nitrogen or BUN and serum creatinine, respectively).

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Answer 3

loss of oxygen to the brain can cause brain damage

Answer 4

Death of neurons and brain damage.

Answer 5

you die !