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Iron

Carries oxygen in the blood. Deficiency is common with heavy periods, pregnancy, plant-based diets, celiac disease, and endurance training.

Supplements can interact with medications and aren't right for everyone, especially during pregnancy or breastfeeding, or with a chronic condition. Ask your provider before you start.

Studied for

  • Iron-deficiency anemia
  • Low ferritin
  • Fatigue and hair shedding from low iron
  • Pregnancy (as directed)

Found naturally in

  • Red meat
  • Shellfish
  • Lentils and beans
  • Spinach (pair plant iron with vitamin C)
What variations of iron exist?Our top pick, what to skip, and how to read the label

Label red flags

  • Iron in a product you're taking 'just in case' without lab work
  • The label shows compound weight rather than elemental iron

Check with a provider

  • Take only if testing (ferritin, CBC, iron panel) shows you need it. Excess iron is harmful.
  • Hemochromatosis or a family history of iron overload
  • Taking levothyroxine, certain antibiotics, or antacids. Separate doses.
  • Keep out of reach of children. Iron overdose is dangerous.

Related conditions

Celiac diseaseCrohn's disease & ulcerative colitis

Supplements that contain it

4 products in Dr. Lesher's store list iron on the label.

Check with your provider before taking any of these, especially if you're pregnant or take medications.

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Parts of the body it affects

Explore what each area does and the conditions that can affect it.

Illustration of blood cells: red blood cells, four kinds of white blood cell, and platelets

Blood & immune system

Blood carries oxygen and nutrients, and white blood cells defend you from infection. In autoimmune disease, that defense system targets your own tissues.

Close-up of a hair follicle in the skin, showing the hair shaft, root and bulb, an oil gland, and blood vessels

Hair

Hair is often one of the first places to show what's happening inside the body. Changes in shedding or thickness can point to nutrient, thyroid, hormone, or autoimmune causes.

Illustrations: Servier Medical Art, CC BY 4.0

Dr. Lesher, ND

Ready to find the root cause?

Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.

Book a consult now