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.
Oxygen in the air needs to get across the thin barriers of the walls of the alveoli and capillaries into the red blood cells in the liquid blood. To do this, it uses the process of diffusion. The lungs are moist (in the form of water vapour or water in a gas form) to help diffusion occur.