I will take a Floravital Liquid supplement when I feel run down. I've been prone to being anemic my entire life, so I need to watch myself really closely. I usually go by how the insides of my eyelids look - just pull down, if it looks like chicken flesh, youre anemic, if its nice an red and veiny, you're good.
Many women just need to supplement during their periods. Also, I've read that many women just cannot absorb enough iron from their diet, regardless of how much damn spinach you eat!
What also helps is making sure I take a LOT of b12, I need to take at least 5K, sublingual tabs per day, B12 is very important in the whole process. I made the mistake of buying a tablet brand which was half the dose (didn't notice it!) and within a few weeks I felt it badly, it took me another week or so to build the stores back up.
Rough start due to major carb WD.
MWF: 1 hour run/walk, 1.5 hours in the gym - upper/lower and core
Sat/Sun=Yard/house work, chasing kids, playing
Family walk every night instead of everyone vegging in front of the TV
Personal trainer to build muscle mass & to help meet goals