Iron
Iron is a critical mineral with dual importance and risk. Essential for oxygen transport via hemoglobin and energy production in mitochondria, it's vital for cellular function. However, the body lacks...
Type
mineral
Forms
4 available
Innate Stores
Yes
Dosage
Iron is a critical mineral essential for oxygen transport via hemoglobin and energy production in the mitochondria. It also plays key roles in neurotransmitter synthesis, immune function, and DNA replication.
The primary concern with iron is balancing adequate intake with avoiding excess. Iron overload from unbound iron in "enriched foods" is more common than recognized, especially in men and post-menopausal women, as the body lacks efficient excretion mechanisms leading to accumulation in tissues and subsequent systemic inflammation. Excess iron acts as a pro-oxidant, generating harmful free radicals through the Fenton reaction, damaging tissues and accelerating aging.
Key Functions
- Oxygen transport via hemoglobin
- Cellular energy production in mitochondria
- Neurotransmitter synthesis (dopamine, serotonin)
- DNA synthesis and repair
- Immune system function
Best Food Sources
- Heme iron (animal sources):
- Grass-fed red meat (3-4 mg per 100g)
- Organ meats, especially liver (6-9 mg per 100g)
- Shellfish, particularly oysters and clams