Risks

Lung Damage

As with any inhaled substances, there is a risk to lung tissues and structures. The inhalation of marijuana is known to cause damage to the protective lining of the bronchial passages. This leaves the lungs vulnerable to microorganisms and other substances that can damage the tissue. When marijuana is smoked, individuals with HIV are at an increased risk of pulmonary infections, due to their already weakened immune system.

Effects on the Central Nervous System

THC is the substance in marijuana which is responsible for the euphoric ("getting high") feeling. It affects the central nervous system with symptoms that can include: impaired memory and thinking, difficulties with decision making, lack of balance and coordination, and concentration problems.

Cancer Risk

In addition to lung cancer, evidence has stated that regular use of smoked marijuana can significantly increase the risk of testicular cancer in men. The medical journal, Cancer, presented a study which associated as much as a 70% increase in testicular cancer risk with smoked marijuana.

Addiction / Dependence

There have been constant debates over whether marijuana is a gateway drug that can be addicting and may lead to other drug use. Depending on who you speak to, the thought of marijuana addiction is ridiculous--to others it is a major issue that needs to be dealt with. Some studies state that 9-10% of marijuana users develop some level of dependency; meaning they will have some degree of withdrawal symptoms if they stop using abruptly.