Studies show that a person who smokes five joints per week may be taking in as many cancer-causing chemicals as someone who smokes a full pack of cigarettes every day. ... It has been proved that marijuana has a negative effect on the immune system, weakening it and thus causing a person to be much more vulnerable to disease. ... When the immune cells are weakened, you are more likely to get sick. ... Habitual marijuana use, as often as one joint per day, may result in serious, immune and psychological consequences. ...

• Word Count: 882
• Approx Pages: 4
• Grade Level: Undergraduate

Marijuana can stay in the user's system for several days or several weeks depending on frequency and potency of the drug. ... In animal studies involving THC, it was shown that immune cells and tissues are damaged which could lead to a higher rate of infection or disease. ...

• Word Count: 524
• Approx Pages: 2

So far the only long-term effects that marijuana has on your body are lung cancer, asthma, psychological dependence, and immune system damage. ... Now he is in drug court for a year and has to attend five NA meetings a week and I think if most teens thought about what it would do to their families then they wouldn't try marijuana. ...

• Word Count: 674
• Approx Pages: 3

In the worst case, the foetus may die in the uterus, but even if the child survives, its immune system may be weakened by the effects of tobacco. ... Premature babies, i.e. those born before the 37th week of pregnancy, suffer more from illness and have a higher death rate, studies suggest that premature birth and smoking are connected. 50% of women who smoke are at increased risk of giving birth prematurely. ...

• Word Count: 2253
• Approx Pages: 9
• Grade Level: High School