Marijuana seeds are small and round. Most commonly, marijuana is rolled into a cigarette, or joint, and smoked. Recently, users have been smoking the drug by emptying the tobacco from cigars and refilling the casing with marijuana. The cigar is called a blunt, because a popular brand of cigar used is Phillies Blunts. In the short-term, marijuana can interfere with memory, learning, thinking and problem solving.
Motor skills are often impaired, and users often complain of a dry mouth.
As with any drug, all of the effects of marijuana are greater when mixed with other drugs. In the long term, marijuana smoke contains some of the same cancer-causing compounds as tobacco, sometimes in higher concentrations, but there has been no direct connection made because many marijuana users also smoke cigarettes. Studies have shown that marijuana affects hormones. Heavy doses of the drug may delay the onset of puberty and affect sperm production in males. In females, the drug can disrupt the menstrual cycle and inhibit ovulation.