A new study shows a link between marijuana use and the risk of the coronavirus and cancer.

A new research study has found a link, among other things, between the use of marijuana and an increased risk of cancer, heart disease and viral heart disease.

Researchers at the University of California San Francisco examined data from more than 6 million people in the U.S. and found that people who used marijuana more than five times a week had a 40 percent increased risk for heart disease compared to people who never used the drug.

The study, published in the journal JAMA Internal Medicine, also found a similar risk among people who smoked marijuana more often and used it more frequently, though the researchers did not look at the effect of smoking marijuana on the likelihood of lung cancer.

It’s not clear whether marijuana is causing any of these problems, but the findings are consistent with studies that have linked marijuana use with lung cancer and other cancers, including colon and breast cancer.

It’s also possible that other environmental compounds, like those found in marijuana, can cause lung cancer, which is one of the main causes of cancer deaths in the United States.

Marijuana was banned by the U to prevent the spread of the virus in 1990.

It was reclassified as a Schedule 1 drug, which classifies drugs with “no currently accepted medical use and a high potential for abuse.”

Since then, the Drug Enforcement Administration has said that the plant is “not currently in controlled substance categories.”