I saw that article on iron damaging DNA. However I know the research is not applicable to humans due to the fact the study was done on cell cultures and more importantly the research is at a very early stage.
There are many studies involving either cell cultures or rats/mice where researchers have a theory and end it by saying something like more work needs to be done to see if it is applicable to humans.
The university/research institute then publishes a press release taking the researchers conclusions out of context. Universities and research institutions funding comes from the number of publications they have, and they get more students from being well-known which is why they do this.
Anyway the media writes a story from this press release. As most journalists have not studied science beyond school level this means they are unable to question the press release, and read and understand the actual research paper. They then end up worrying people unnecessarily especially as most research is not continued.
In comments sections of the broadsheets e.g. Guardian there is normally a research scientist in that field who leaves a comment pointing out the error in the journalist's understanding. Some of these commenters' are very good at explaining why the research is not applicable to humans in layman's terms, while others you can only understand if you have a degree or are sufficiently self-taught in the area.
In short at the moment unless you have one of the few diseases where having too much iron is a problem, or you are taking iron without being tested then there is no need to worry.
GPs refusing to test for iron and ferritin are the real killers. I have a sister-in-law who collapsed and ended up needing an emergency iron infusion due to her GP refusing to follow an haematologist's orders and give her blood tests every six months until she has reached the menopause. The GP did this to save money. I also know of other cases where people ended up in A&E from collapsing due to low ferritin due to GPs not testing for it.