A stroke occurs when a blood clot blocks a blood vessel or artery, or when a blood vessel breaks and interrupts blood flow to an and bleeding occurs into an area of the brain. Every stroke is different.
ETA Chlorophyll works on the Liver and probably works a little. No it really doesn't, you are not a plant. Tea will oxygenate the blood. No it won't Also don't do as someone else said and drink liquid oxygen, that's really not a good idea.
Low Blood Oxygen. The oxygen levels in blood can be measured by two means - first checking the arterial blood gas by resorting to a blood test, and second, by using a pulse oximeter (a device which is clipped on to the finger and to take oxygen readings in the blood).