I'm a woman in my 50's, have had pet and house dust allergies all my life, take inhalers daily.
Around two years ago I stumbled upon a product called SpaTone in Boots, which professes to be a natural iron-rich water which unlike most supplements is very gentle on the stomach.
I started taking SpaTone occasionally with fruit juice, started noticing I felt stronger and better in myself.... 2 years on I'm absolutely convinced that in some way, directly or indirectly, the SpaTone helps my breathing and general stamina/ breathlessness.
I was recently on holiday, did not pack SpaTone, felt a definite decrease in health, but the point is, it was my breathing and airways most specifically which declined.
I'm certain I'm not dreaming this, and though SpaTone costs me around 30p per day it is so much easier and nice to take than tablets, and I can sip it slowly with fruit juice which I just think is nicer than a big thing having to dissolve in the stomach.
No, I don't work for them, but it's seriously good stuff, I always carry a few sachets in my bag, and after only 2 days of having any break from it and then re-starting I'm back to feeling stronger and on top of the world again.
Apparently iron also helps in calcium absorbtion, so anyone with calcium deficiency or bone problems due to lack of calcium I'm sure could benefit.
Amazingly, I'm not sure the medics know or accept the asthma-iron link, I did find one study on the internet conducted in the U.S. but that was all.
I'd be interested to know if there are other people who like me are certain of a strong correlation. (At least in certain types of asthma).
Maybe some of you sufferers could start your own experiments with SpaTone off other daily iron supplements....and post your conclusions here.