Marijuana -- US government admits that cannabis kills cancer cells

Researchers have proven that key chemical ingredients in marijuana were found effective in fighting against colon cancer, liver cancer, breast cancer and several other forms of the disease.

This is coming after conspiracy theorists and creditable scientists have previously argued that smoking or ingesting the herb can have medicinal benefits.

A health researcher on the US government's Cancer.org website claimed: "Studies in mice and rats have shown that cannabinoids may inhibit tumor growth by causing cell death, blocking cell growth, and blocking the development of blood vessels needed by tumors to grow. Laboratory and animal studies have shown that cannabinoids may be able to kill cancer cells while protecting normal cells.

"A study in mice showed that cannabinoids may protect against inflammation of the colon and may have potential in reducing the risk of colon cancer, and possibly in its treatment.

"A laboratory study of delta-9-THC in hepatocellular carcinoma (liver cancer) cells showed that it damaged or killed the cancer cells. The same study of delta-9-THC in mouse models of liver cancer showed that it had antitumor effects."

Cancer kills up to 20,000 people worldwide every day, according to global health estimates.