There are many health effects from the use of marijuana. One of these is damage to the lungs. Marijuana has the same effect on the lungs as does cigarette smoking. The lungs can be damaged, and a person can even get lung cancer. It contains the same toxins as cigarettes. A second health effects from marijuana use could be stroke and/or heart disease. Marijuana speeds up your heartbeat. So this is a second health effect from marijuana use. A third health effects from marijuana use are the negative effects it has on the brain. Marijuana use is shown to affect memory, attention, and even learning ability.