Yes the marijuana can damage your brain but also it raise your heart beat from 20% to 100% per 3 hours which is faster than it usual beats. They be consequences with your hearts like having heart attack.

i agree , but marijuana should be legalized because there's many effective treatment for a range of conditions like epilepsy , Chron's diseas , PSTD , and MS , and etc. If the marijuana weren't to be legalized then people would have suffer medically.