Iron

Energy & fatigue Iron is essential for energy production in your cells. A deficiency can cause mitochondria to function less efficiently, making you feel exhausted, weak, and easily out of breath. By specifically correcting a deficiency, your body can convert food into usable energy more effectively, and daily activities feel less strenuous.

Oxygen transport & blood production Iron is a key building block of hemoglobin, the protein in red blood cells that binds oxygen and transports it to muscles, the brain, and organs. With low iron status, or anemia, tissues receive less oxygen, manifesting as weakness, pallor, and exercise intolerance. Replenishing a proven deficiency supports red blood cell formation and oxygen delivery.

Mood & cognitive function Iron is also essential for the production of neurotransmitters such as dopamine, serotonin, and norepinephrine. Research links a deficiency to irritability, increased anxiety, difficulty concentrating, and a foggy mind. Restoring iron stores (ferritin) can indirectly improve mood and alertness, especially in people with demonstrably low levels.

Safe & targeted use Because too much iron can be harmful and other causes (such as blood loss or inflammation) can underlie a deficiency, iron supplementation should be targeted. Guidelines recommend supplementation only if a deficiency is suspected or confirmed and preferably under the supervision of a doctor, including blood tests (e.g., hemoglobin and ferritin). This way, you can reap the benefits without unnecessary risks.