Iron is a naturally occurring metallic element that holds a prominent place in the periodic table. With its atomic number 26 and symbol Fe (derived from the Latin word “ferrum”), iron is one of the most abundant elements on Earth. It is an essential component of our planet’s core and plays a crucial role in various biological processes. In its pure form, iron is a lustrous, silvery-gray metal that is highly malleable and ductile. It has a relatively high melting point, making it useful in numerous industrial applications. Iron is renowned for its remarkable magnetic properties, making it a vital component in the production of magnets and electromagnets. Iron has been used by humans for thousands of years, dating back to ancient civilizations. Its versatility and strength have made it a fundamental material in construction, transportation, and machinery. From towering skyscrapers to sturdy bridges, iron has been instrumental in shaping our modern infrastructure. Furthermore, iron is an essential nutrient for all living organisms, including humans. It is a crucial component of hemoglobin, the protein responsible for transporting oxygen throughout our bodies. Additionally, iron is involved in various enzymatic reactions and plays a vital role in energy production and metabolism. From ancient blacksmithing to modern steel production, iron has been at the forefront of human progress. Its abundance and versatility have propelled civilizations forward, enabling technological advancements and shaping the world we live in today. Whether it is in the form of a towering structure or a vital nutrient, iron’s significance cannot be overstated.

Expert Recommendations:

Dr. Andrew Huberman recommends ensuring sufficient iron levels for proper cell growth pathways in the follicles.¹

How Does Iron Intake Affect Fiber Absorption in the Body?

Iron intake can have an impact on the body’s absorption of dietary fiber. Consuming adequate levels of iron is crucial for the body to fully experience the benefits of dietary fiber. Inadequate iron levels can hinder the body’s ability to absorb and utilize fiber, which may lead to various health issues.


• Improved energy levels: Iron is essential for the production of hemoglobin, a protein in red blood cells that carries oxygen to all parts of the body. Adequate iron levels can help prevent fatigue and increase energy levels. • Enhanced cognitive function: Iron plays a crucial role in brain development and function. It helps support cognitive processes such as memory, concentration, and overall mental alertness. • Boosted immune system: Iron is necessary for the proper functioning of the immune system. It helps in the production of white blood cells, which are responsible for fighting off infections and diseases. • Healthy pregnancy: During pregnancy, iron requirements increase significantly to support the growing fetus and prevent complications like premature birth and low birth weight. Sufficient iron intake can reduce the risk of anemia in pregnant women and promote healthy fetal development. • Improved athletic performance: Iron is vital for oxygen transportation to muscles during physical activity. Athletes with adequate iron levels may experience improved endurance, stamina, and overall athletic performance. • Healthy hair, skin, and nails: Iron deficiency can lead to brittle nails, hair loss, and pale skin. Sufficient iron intake promotes healthy hair growth, strengthens nails, and maintains a healthy complexion. • Regulated body temperature: Iron is involved in the regulation of body temperature. It helps maintain a stable body temperature by facilitating proper circulation and oxygen delivery to body tissues. • Prevention of anemia: Iron deficiency is the leading cause of anemia, a condition characterized by low levels of red blood cells or hemoglobin. Consuming enough iron can prevent anemia and its associated symptoms, such as weakness, dizziness, and shortness of breath. • Enhanced muscle function: Iron is essential for proper muscle function. It helps in the production of myoglobin, a protein that stores oxygen in muscles, enabling them to contract and function efficiently. • Improved overall health: Adequate iron intake is crucial for overall health and well-being. It supports various bodily functions, including metabolism, hormone production, and DNA synthesis.


• Consult with a healthcare professional before starting iron supplementation, especially if you have any underlying health conditions or are taking any medications. • Iron supplements should only be taken if there is a diagnosed iron deficiency. Excessive iron intake can lead to iron overload, which can be harmful. • Iron supplements can cause gastrointestinal side effects such as constipation, nausea, and stomach cramps. Start with a lower dose and gradually increase if necessary to minimize these effects. • Iron can interfere with the absorption of certain medications, such as antibiotics, thyroid medications, and some antacids. It is important to take iron supplements at least 2 hours apart from these medications. • Iron supplements should be kept out of reach of children, as accidental ingestion can be toxic. • Iron supplements may cause darkening of the stools, which is harmless but can be mistaken for gastrointestinal bleeding. • Iron supplements should not be taken with calcium-rich foods or supplements, as calcium can inhibit iron absorption. It is recommended to take iron supplements with vitamin C-rich foods or supplements, as vitamin C enhances iron absorption. • Iron supplements can interact with certain medical conditions, such as hemochromatosis (excessive iron absorption disorder) or thalassemia (inherited blood disorder). It is important to discuss your medical history with a healthcare professional before taking iron supplements.


1. Healthy Hair Science | Huberman

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