Marijuana
Scientists reporting in a study published in the British Journal of Cancer found that chemicals in marijuana can stop prostate cancer cells from growing. (Olea-Herrero 2009) The researchers suggest that marijuana works on prostate cancer by blocking a receptor that sits on the surface of most tumor cells. This action prevents the tumor cells from dividing. But before you go light up, we have to mention that smoking marijuana, or enjoying it in brownies or other culinary treats, does not work. Scientists note that they need to find a specific drug that can be synthesized from marijuana that they can use to treat prostate cancer. Sorry guys.
Also, while there are no studies linking marijuana use as a cause of prostate cancer or other prostate-related problems, there is a study showing a link between marijuana use and an elevated risk of aggressive testicular cancer. (Daling 2009) The study was published in March 2009 in the journal Cancer and basically said that being a marijuana smoker at the time of diagnosis increased the risk of having the disease by 70 percent. The researchers also noted that compared with men who did not smoke marijuana, smokers were twice as likely to develop the disease.
See also
Cocaine
This drug has a reputation for temporarily enhancing sexual pleasure and performance, largely because it causes the brain to release the “pleasure” neurochemical called dopamine. However, cocaine also has a reputation—much less appealing-for causing medical complications, including heart attack, disturbances in heart rhythm, chest pain, respiratory failure, seizures, convulsions, strokes, abdominal pain, and nausea. You might get it up, but you also might check out.
Heroin
Most people who use heroin experience a decline in sex drive, and men have a difficult time getting a reasonable erection. Among the many possible medical complications associated with heroin use are urinary retention, as well as respiratory arrest, disorientation, lowered heart rate, hypotension, dry mouth, delirium, nausea, vomiting, constipation, muscle spasticity, psychological dependence, rash, coma, confusion, and pupil constriction.
Methamphetamine
Methamphetamine is a central nervous system stimulant that causes effects similar to those of another stimulant, cocaine, only more so, because it causes much more dopamine to be released in the brain. Therefore, while use of methamphetamine can improve your libido and sexual pleasure temporarily, it is also fraught with health consequences, including rapid heart rate, irregular heartbeat, high blood pressure, and hyperthermia. Long-term use is associated with anxiety, violent behavior, extreme weight loss, severe dental problems, confusion, paranoia, and delusions.
