If you have dark circles under your eyes, It is possible that your iron intake is low Or You Have Parasites. You may have both... like me.
My iron happened to be low because parasites were sucking the life blood out of me. I am on the Humaworm Parasite Cleanse and right now, into my third week. I seem to be getting better daily. My eyes have lost most of the dark circles around them. They are still darker, but not as bad. Check here for symptoms of Parasites https://humaworm.com/symptoms.html
Here are some other symptoms of low iron
•sudden pale skin tone changes
•Brittle finger and toe nails (calcium as well)
•Regular frontal headaches
•Cold hands and feet
•Shortness of breath
There are natural ways to increase your iron ( I happened to take a few iron capsules, but only a few)
Baked Potato With the skin on
You May Not Be Absorbing The Iron, These Foods Can Help
Tomatoes, Tomato Juice
Green and Red Peppers
Orange Or Orange Juice
Meats, Fish, Poultry
If you drink coffee, tea, red wine, soy products or eat sweet potatoes... this interfers with the iron absorption. So try to limit those.