Dietary Iron and Colorectal Cancer Risk: A Review of Human Population Studies.
Study Goal
The researchers aimed to examine the role of dietary iron (heme and nonheme), heme iron alone, and iron from supplements in colorectal carcinogenesis.
Results Summary
The abstract indicates that while iron is essential for physiological functions, excess iron can cause tissue damage and potentially contribute to diseases like cancer through oxidative stress. The study reviews human population data on iron's role in colorectal carcinogenesis but does not specify conclusive results.
Population
Human populations (general, not further specified).
Effective Dosage
Not specified.
Duration
Not specified.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
excess iron | increase | tissue damage | - | - | can cause | #1 |
excess iron | increase | many diseases such as cancer | - | - | potentiating the development of | #2 |
excess iron | increase | reactive oxidative species | - | - | generation of | #3 |
dietary iron (heme and nonheme) | neutral | colorectal carcinogenesis | human population studies | - | examined the role of | #4 |
heme iron alone | neutral | colorectal carcinogenesis | human population studies | - | examined the role of | #5 |
iron from supplements | neutral | colorectal carcinogenesis | human population studies | - | examined the role of | #6 |
Iron is an essential micronutrient that is involved in many redox processes and serves as an integral component in various physiological functions. However, excess iron can cause tissue damage through its pro-oxidative effects, potentiating the development of many diseases such as cancer through the generation of reactive oxidative species. The two major forms of iron in the diet are heme and nonheme iron, both of which are found in several different foods. In addition to natural food sources, intake of nonheme iron may also come from fortified foods or in supplement form. This review summarizes the results of human population studies that have examined the role of dietary iron (heme and nonheme), heme iron alone, and iron from supplements in colorectal carcinogenesis.