Iron is essential, we need it, but I think the important thing here is the balance of iron and where the body stores it. You can be anemic and have organs overloaded with iron at the same time, so there is no clear cut answer at this stage to the iron question.
Usually the body is very good at maintaining the balance, once you have enough in storage hepcidin increases, which in turn reduces absorption.
People with hemochromatosis genes have low hepcidin, hence their body has trouble cutting off the intake.
I believe myself that we have plenty of iron in our diets, it's forced on us through iron enriched food products, and the marketing complex that pushes that iron is good. Both too little and too much cause problems.
There is no answer to the first question. You need to find out your iron status and work from there.
I got very sick when my iron levels were high. The symptoms are similar to MS, I even got a brain lesion! My sister has MS DX for 20 years, she also had high iron levels. I reduced my iron levels and became well again. But my case was clear cut.
Maybe my sister doesn't have MS, maybe she has a mild iron overload.
Don't know, they won't reduce her iron levels
My brain went quite queer when my iron levels were high (the brain lesion formed and also epilepsy showed up on an EEG) and also when I was de-ironing by phlebotomy I had an episode of involuntary arm and leg movements, just for one day. The more iron I got out the better I felt, and now I'm de-ironed I'm a box of birds, no more brain events, no fatigue.
I don't know the connection, but there is one, of that I'm sure.
just wish my sister could try it too!