The use of medical marijuana has been increasingly explored and recognised in the current century to treat a variety of health issues that are ineffectively treated using other drugs and therapies. During this course, several physicians and patients have effectively benefited from treating their condition using medical marijuana, which is why it is now allowed for use when prescribed by a medical marijuana doctor. It is also important to note that the US Food and drug administration has not yet approved marijuana for any medical uses. Even though medical marijuana is still prescribed for specific conditions such as chronic pain, nausea, multiple sclerosis, glaucoma, HIV, and IBS. What are the harmful effects of medical marijuana? Several potentially harmful effects of medical marijuana also have been identified such as cardiovascular issues, increased risk of injury in seniors, high risk of developing severe mental illness. People with existing heart problems may also be affected by in