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Lung Cancer Blog: Intake Of Iron And Calcium May Increase The Risk Of Lung Cancer

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Dec 1, 2005

Intake Of Iron And Calcium May Increase The Risk Of Lung Cancer

Intake Of Iron And Calcium May Increase The Risk Of Lung Cancer
I was thinking small amounts of iron and other multivitamins may benefit you and may not do any harm, but I am reading a study, which suggest otherwise. This study says that small amounts of iron and calcium in the diet or in the form of supplements may play an important role in the development of lung cancer, especially among smokers.

That's interesting and may be something to think about. Researchers sometime say the micronutrients are good and sometimes say they are bad. They now say that iron, zinc, and calcium are micronutrients that participate in the metabolism of damaging forms of oxygen, known as reactive oxygen species. Intake of these micronutrients has been associated with higher risks of certain cancers, such as colorectal, breast, and prostate cancers.

Many tend to take lots of multivitamins thinking that they are good for health. This study suggests that this may not be the case.

"Some recent literature has associated these micronutrients with disease including cancer, but nobody had looked into it in the lung," Dr. David C. Christiani from Harvard School of Public Health and Harvard Medical School says.

"The message here for smokers and for former smokers is, don't take large amounts of supplements, particularly those with iron or calcium, unless you have a medical indication for them," warned Christiani.

Iron and calcium were associated with a higher risk of lung cancer but zinc was associated with a lower risk of lung cancer. However, the associations were stronger when all 3 micronutrients were analyzed in the same model.

"The associations hold true, no matter the source of the micronutrients," Christiani said. "Iron and calcium in particular, both dietary and in supplements, are associated with increased risk of lung cancer."

The investigators also found differences related to smoking history, with the effects being particularly strong in current smokers, and less so in former smokers.


Do You Read All Of Our Cancer Blogs?

Do You Read All Of Blogs?
Do you read all of the blogs published by Many of our bloggers are busy keeping you updated on the various health related topics. We publish the following blogs at this time.

Cancer blog: I manage the cancer blog with lots of help and support form other bloggers. Through this cancer blog my friends and I try to bring stories of hope for patients with cancer. The cancer blog often republishes important blog posts from other cancer related blogs at If you are searching for a blog that covers wide variety of cancer topics, this may be the one for you.

Breast cancer blog: Breast cancer blog is run by Emily and other bloggers and they bring you the latest stories, news and events that are related to breast cancer. Increasing awareness about breast cancer among women and in the general population is the main goal of this breast cancer blog.

Lung cancer blog: Lung cancer blog is managed by Scott with the help of other bloggers. Through this blog Scott and his friends constantly remind the readers about the dangers of smoking. It's a never-ending struggle against this miserable disease with which a social stigma of smoking is associated.

Colon cancer blog: Colon cancer blog is run by Sue and other bloggers. Sue brings a personal touch to the colon cancer blog since her mother died of colon cancer few years ago. She writes about stories, research news and advances in treatment related to colon cancer.

Prostate cancer blog: Prostate cancer is the most common cancer among American men. American Cancer Society estimates that over 230,000 new cases of prostate cancer occur in the United state every year. This important blog about prostate cancer is run by Mark and other bloggers. This blog brings news, stories, and other personal observations related to prostate cancer. publishes a diabetes watch blog and this blog is run by JoAnn other bloggers. This diabetes watch blog brings you the latest in the field of diabetes. This includes personal stories, advances in diagnosis and treatment, and other observations about diabetes. Improving awareness about diabetes is an important mission of this group.


Lung cancer
We engage a never-ending daily struggle to understand and defeat the hidden mysteries of cancer. This is a long and laborious fight, but some moments stand out as grim reminders of the severity of the problem and ruthlessness of the enemy. We recently heard about the sad demise of Peter Jennings, who was the news anchor of ABC News for a long time.

Lung Cancer Blog: Intake Of Iron And Calcium May Increase The Risk Of Lung Cancer

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