As much as we support supplement freedom in the U.S., there are some very questionable supplements on the market. Some are made from rocks, hair or metals. Iron can build up in the system and become toxic so we are going to have to wave them goodbye. We forget sometimes that iron is a heavy metal, after all. We need a little, not a lot.
According to a new study of cancer cells from Chalmers University of Technology, Sweden, two common iron compounds increase the formation of a known cancer biomarker.
The two compounds, ferric citrate and ferric EDTA, are often used in dietary supplements and as a food additive in the USA and the EU. They are commonly a part of fortified foods, but the types of iron used are rarely listed on supplement bottles or ingredients lists.
Currently, there are many different types of iron supplements on the market. These can be based on at least 20 different iron compounds, and sold under a wide range of brands.
Here, we talk about what iron does in the lab and what you can you do if you need more iron.
Chalmers University reported:
The researchers studied ferric citrate and ferric EDTA, which have both previously been shown to worsen tumour formation in mice with colon cancer. The science behind this has been little understood until now, and possible effects on human cells were not previously investigated.