I think any adult should be able to consume whatever the hell he/she wants as long as it doesn't hurt anyone else.
Having said that, don't kid yourself.


What are the short-term effects of Marijuana use?

The short-term effects of marijuana use include problems with memory and learning; distorted perception (sights, sounds, time, touch); difficulty in thinking and problem solving; loss of coordination; and increased heart rate, anxiety, and panic attacks.
THC in marijuana is strongly absorbed by fatty tissues in various organs. Generally, traces of THC can be detected by standard urine testing methods several days after a smoking session. In heavy chronic users, traces can sometimes be detected for weeks after they have stopped using marijuana.


What are the long-term effects of Marijuana use?

People who smoke marijuana often have the same respiratory problems as cigarette smokers. These individuals may have daily cough and phlegm, symptoms of chronic bronchitis, and more frequent chest colds. They are also at greater risk of getting lung infections like pneumonia. Marijuana contains some of the same, and sometimes even more, of the cancer-causing chemicals found in cigarette smoke.


Effects of Heavy Marijuana Use on Learning and Social Behavior

Marijuana affects memory, judgment and perception. Learning and attention skills are impaired among people who use marijuana heavily. Longitudinal research on marijuana use among young people below college age indicates those who use marijuana have lower achievement than the non-users, more acceptance of deviant behavior, more delinquent behavior and aggression, greater rebelliousness, poorer relationships with parents, and more associations with delinquent and drug-using friends.


Effects on Pregnancy

Any drug of abuse can affect a mother's health during Some studies have found that babies born to mothers who used marijuana during pregnancy were smaller than those born to mothers who did not use the drug. In general, smaller babies are more likely to develop health problems.
A nursing mother who uses marijuana passes some of the THC to the baby in her breast milk. Research indicates that the use of marijuana by a mother during the first month of breast-feeding can impair the infant's motor development.


Addictive Potential

A drug is addicting if it causes compulsive, uncontrollable drug craving, seeking, and use, even in the face of negative health and social consequences.
While not everyone who uses marijuana becomes addicted, when a user begins to seek out and take the drug compulsively, that person is said to be dependent or addicted to the drug.
Some frequent, heavy users of marijuana develop a tolerance for it. Tolerance means that the user needs larger doses of the drug to get the same desired results that he or she used to get from smaller amo
unts.