Techniques of ingesting marijuana vary. Bongs, or water pipes, pipes, joints, candies, baked goods and even teas are all popular ways of ingesting this drug. Smoking marijuana is the quickest and most efficient way of introducing THC into the blood stream. While eating or drinking it will work, the effect is delayed and not as potent. However it is ingested, THC acts upon molecular targets on brain cells, called cannabinoid receptors. These receptors are activated by chemicals similar to THC called endocannabinoids, such as anandamide. These are naturally occurring in the body and are part of a neural communication network that plays an important role in normal brain development and function. The part of the brain that houses the majority of these cannabiniod receptors are the same parts of the brain that influence pleasure, memory, thinking, concentration, sensory and time perception, and coordinated movement. Marijuana over activates the endocannabinoid system, causing the high and other effects that users experience. This may cause extreme difficulty in completing day to day activities such as driving, reading and socializing with peers. It has been suggested that marijuana is at the root of many mental disorders, including acute toxic psychosis, panic attacks (one of the very conditions it is being used experimentally to treat), flashbacks, delusions, depersonalization, hallucinations, paranoia, depression, and uncontrollable aggressiveness. Marijuana has long been known to trigger attacks of mental illness, such as bipolar psychosis and schizophrenia. This connection with mental illness should make health care providers for terminally ill patients and the patients themselves, who may already be suffering from some form of clinical depression, weigh very carefully the pros and cons of adopting a therapeutic course of marijuana. Research clearly demonstrates that marijuana has the potential to cause problems in daily life or make a person's existing problems worse. In the short term, marijuana use impairs perception, judgment, thinking, impaired motor coordination, anxiety, impaired