Studies

The "inappropriate dosing and oral consumption of marijuana resulted in distress that caused a cardiac event and subsequent reduced cardiac function"..."Marijuana can be a useful tool for many patients, especially for pain and nausea relief. At the same time, like all other medications, it does carry risks and side effects"

There could be a high (37%) increase in the risk that depression will be developed in young adulthood, up to 32 years of age. This also could cause a greater risk of suicide, even considering the persons existing mental health. The study did not show any link between marijuana use and future anxiety issues.