Coincidence or not?

For a week or more I've become quite lethargic with little or no energy and first thing AM wanting to carry on sleeping, very unlike me. I harked back to a time when my Consultant uncovered the fact i was anaemic and loathe to prescribe Iron tablets, he suggested I go onto eating spinach which I did and it fired me up in those days most definitely.
Three days now on spinach and I'm back to normal such as normal really is at my age:) Surely it can't be pure coincidence?
Look what it did for Popeye:-)