Hermetica Superfood Encyclopedia
The Short Answer
An essential mineral that carries oxygen through your blood to every cell in your body, supporting energy, brain function, and immune health — especially important for women and during pregnancy.
CategoryVitamin & Mineral
GroupMineral
Evidence LevelModerate
Synergy Pairings4
Health Benefits
Optimizes Oxygen Transport
Forms the core of hemoglobin and myoglobin, enabling efficient oxygen delivery to tissues and muscles, sustaining energy and cellular function.
Boosts Energy Production
Supports mitochondrial respiration and ATP synthesis by facilitating oxygen availability, enhancing stamina and metabolic efficiency.
Strengthens Immune Function
Aids in the development of immune cells and enzymes critical for pathogen defense and inflammation control.
Enhances Cognitive Support
Essential for neurotransmitter synthesis and brain oxygenation; adequate levels improve memory, focus, and learning.
Prevents Anemia
Adequate iron intake prevents iron-deficiency anemia, mitigating symptoms like fatigue, pallor, and compromised immunity.
Origin & History
Iron is a vital trace mineral essential for oxygen transport, energy production, immune resilience, and cognitive function. As a key component of hemoglobin and myoglobin, iron enables the delivery of oxygen to every cell, making it foundational to vitality and mental clarity.
“Iron has been recognized for its vital role in human health since ancient times, with traditional medicines across various cultures utilizing iron-rich foods and mineral sources to combat weakness and improve vitality. Ancient Egyptian and Greek texts describe remedies for 'pale sickness' (likely anemia) involving iron-containing compounds. Its importance in blood formation and energy has been acknowledged for millennia, predating modern scientific understanding.”Traditional Medicine
Scientific Research
Extensive scientific research, including numerous clinical trials and meta-analyses, unequivocally demonstrates iron's fundamental role in oxygen transport, energy metabolism, and immune function. Studies consistently link iron deficiency to anemia, fatigue, and impaired cognitive function, particularly in vulnerable populations. The evidence base is robust, supporting its critical importance for overall vitality and health.
Preparation & Dosage
Common Forms
Available as ferrous sulfate, ferrous gluconate, or ferrous bisglycinate in supplements; present in whole foods.
Dosage
8 mg for adult men and postmenopausal women; 18 mg for premenopausal women
Recommended daily allowance (RDA) is .
Timing
Best absorbed on an empty stomach, but can be taken with food to minimize gastrointestinal upset.
Absorption Enhancement
Co-ingestion with Vitamin C significantly enhances non-heme iron absorption.
Nutritional Profile
- Key Bioactive Forms: Heme iron (highly bioavailable, found in animal products), Non-heme iron (found in plant sources).
- Food Sources: Heme iron from grass-fed beef, lamb, liver, poultry, sardines; Non-heme iron from lentils, spinach, tofu, chickpeas, blackstrap molasses, and fortified grains.
Synergy Stack
Hermetica Formulation Heuristic
Mineral cofactor
Energy & Metabolism | Cognition & Focus
Frequently Asked Questions
What is iron and why do I need it?
Iron is an essential trace mineral that forms the core of hemoglobin in red blood cells, enabling oxygen transport throughout the body. It also supports energy production, immune function, and cognitive performance. Iron deficiency is the most common nutritional deficiency worldwide, affecting over 1.6 billion people.
How much iron should I take and what are the side effects?
The RDA is 8 mg/day for adult men and 18 mg/day for premenopausal women. Common side effects of iron supplements include constipation, nausea, and stomach upset. Taking iron with food or using chelated forms like ferrous bisglycinate can reduce GI side effects. Do not supplement without confirmed deficiency, as excess iron causes oxidative damage.
What is the best form of iron supplement?
Ferrous bisglycinate (iron bisglycinate chelate) is generally considered the best-tolerated and most bioavailable supplemental form, causing fewer GI side effects than ferrous sulfate or ferrous fumarate. Pairing any non-heme iron supplement with vitamin C significantly improves absorption. Heme iron polypeptide supplements also offer superior absorption but are derived from animal sources.
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