Health - what are the long term effects of marijuana use the brain and lungs?

When a person smokes marijuana thc passes from the lungs into blood stream the blood carries chemicals to the brain and other organs through to other parts of the body the body absorbs thc more slowley when the person eats or drinks it it takes about 30 minutes to a hour to feel the effects altered senses altered sense of time changes in mood impaired thinking body movements it can effect brain developement when a teen starts using the drug may reduce thinking memory and learning functions and effect things can be permanent can cause the lungs to be affected long term