Should I take iron?

Our read is that iron deficiency can lead to various issues, including hair loss, impaired dopamine formation, and may be more common in females due to menstruation and in US infants.

However, high iron levels are associated with accelerated aging and can be toxic, necessitating careful monitoring of iron status.

Our read is that while heme iron from sources like grass-fed ground beef is generally safe for most, its bioavailability and interaction with other nutrients like copper are crucial considerations.

Iron supplementation requires careful measurement of iron status, considering a comprehensive mineral panel including sodium, potassium, chloride, CO2, calcium, magnesium, iron, TIBC, UIBC, iron saturation, ferritin, and zinc, as Bryan Johnson's biomarker assessment includes.

• 01Paul Saladino stated that deficiencies in iron, vitamin B12, taurine, and zinc can lead to hair loss.
• 02Andrew Huberman and Paul Saladino noted that females are more prone to iron deficiency than males due to menstruation.
• 03Peter Attia mentioned that 10-20% of absorbed iron is stored in ferritin for long-term depot.
• 04Andrew Huberman indicated that pale conjunctiva in children can suggest iron deficiency.
• 05Peter Attia and Paul Saladino observed that high ferritin levels can occur with infection or chronic inflammation even if iron is deficient.
• 06Paul Saladino explained that copper is essential for ferroportin, which facilitates iron export from red blood cells, and deficiency leads to larger, more dangerous red blood cells.
• 07Paul Saladino stated that iron is a commonly under-consumed nutrient for US infants.
• 08Paul Saladino noted that heme iron is generally safe for most people, with hemochromatosis being a rare genetic condition.
• 09Paul Saladino mentioned that nutritional needs, such as iron requirements, can change over a lifetime, for example, after menopause.
• 10Paul Saladino suggested that a ferritin level of 100-200 ng/mL is generally safe and normal and does not indicate harmful cellular senescence from heme iron.
• 11Rhonda Patrick linked depression to reduced iron, reduced zinc, and elevated body temperature, possibly as an evolved strategy for pathogen defense.
• 12Bryan Johnson's biomarker assessment includes a comprehensive mineral panel including sodium, potassium, chloride, CO2, calcium, magnesium, iron, TIBC, UIBC, iron saturation, ferritin, and zinc.
• 13Paul Saladino stated that low iron levels can impair dopamine formation in the brain because dopamine synthesis is an iron-dependent reaction.
• 14Paul Saladino noted that grass-fed ground beef contains nutrients such as vitamin B12, vitamin K2, riboflavin, vitamin B6, heme iron, creatine, carnitine, taurine, and bioavailable animal-based protein.

Andrew Huberman, Rhonda Patrick, and David Sinclair warned that high iron levels may predispose individuals to accelerated aging. Paul Saladino suggested that heme iron may be problematic when combined with N-nitroso compounds or synthetic nitrates, and that lentils and tofu are poor sources of bioavailable iron. Rhonda Patrick emphasized that iron supplementation requires careful measurement of iron status. Paul Saladino stated that iron status cannot be evaluated without understanding copper status, and that elevated ferritin levels should be avoided and can spike during inflammation. David Sinclair cautioned that multivitamins with high iron levels can be detrimental due to iron accumulation. Andrew Huberman noted that high iron levels in the blood over 45 milligrams per day can be toxic, and excessive iron intake can be toxic, while insufficient iron can lead to anemia. Paul Saladino also mentioned that prenatal vitamins often contain poorly absorbed synthetic iron that causes constipation.

The optimal healthy level of ferritin for humans is not definitively known, and further research clarifying this could change the verdict. Additionally, a deeper understanding of the bioavailability of iron in various food sources, such as broccoli, could influence recommendations. More comprehensive medical training on the interconnectedness of copper and iron metabolism, as highlighted by Paul Saladino, would also be beneficial.