This study is one of the first group studies to analyze the effects of calcium and dairy food in relation to the cancer prevention. Researchers noted.

By reviewing data of previous studies, researchers analyzed the effects of calcium rich diet on the risk of cancer in 198,903 women and 293,907 men.

During the follow up period of seven year 16,605 women and 36,956 men developed cancer, researchers found.

Calcium intake was long been associated with the risk of cancer reduction, in women, but instead, no beneficial effect was seen with the consumption of 1300mg of calcium.

People who consume more calcium have low risk of digestive system cancer with respect to their peers who use less calcium, researchers noted.

“These findings show that current recommendation of calcium intake lowers the risk of cancers in women and especially colorectal cancer in both.” The researchers concluded

The study, published in the l Journal of the American Medical Association. 17 Dec. issue, reveals that smokers have almost 18% higher risk of getting that cancer and 25% increased risk of death from the disease.

Edoardo Botteri, the lead author of the study, says: “There is a significant link between smoking and the occurrence of colorectal cancer and related deaths.”

“Smokers must keep in mind that it not only increases their risk of developing the cancers of the organs that have direct tobacco exposure including lungs, larynx and digestive tract of upper area, but it also increases the risk of developing cancers in those organs that don’t have a direct tobacco contact like kidney, bladder, pancreas, rectum and colon,” he added.

To find a link between smoking and colorectal cancer, the researchers examined the data received from 106 reviewed studies that had different number of participants ranging from few hundred to 1 million.

Looking at the collective risk, the researchers found that smokers had an 18% increase risk of developing colorectal cancer.