Correlations

Three correlations

Correlations: From marijuana use to meat eating to fast food

One of the most commonly-cited statistics in the popular media is the strong correlation between marijuana use and later 'hard' drug use, although it is uncertain if marijuana is causally related, or merely correlated with this phenomenon. Another surprising correlation in the use of marijuana also perplexes researchers. There also appears to be a strong correlation between schizophrenia and heavy use of marijuana in adolescence. "Scientists in Australia followed nearly 4,000 young adults born between 1981 and 1984 at the 21-year mark, and found that the longer study participants had used marijuana, the higher the risk of psychosis-related outcomes. Those who had experienced hallucinations early were more likely to have smoked or used marijuana longer and more frequently" (Meier 2010).

The study's authors state that the causal relationship between the use of the drug and later schizophrenia...
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