Does smoking weed make your blood thin?
Weed has been shown to work as a blood thinner in some cases. This is likely due to the fact that it can lower blood pressure and slow the heart rate. These effects may be helpful in preventing strokes and other blood clots. In addition, weed may also improve the flow of blood by thinning the blood.
What does weed do to your blood?
This observation could be partly explained by marijuana raising blood pressure (in some cases) and heart rate and reducing the blood's capacity to carry oxygen. Marijuana may also cause orthostatic hypotension (head rush or dizziness on standing up), possibly raising danger from fainting and falls.