We usually think about iron in terms of energy. Low iron can leave you exhausted, weak, short of breath, or struggling with brain fog.

But there may be another reason to pay attention to your iron levels: your brain needs iron and adequate oxygen delivery to function properly.

New research suggests that anemia and low hemoglobin may also be associated with a higher risk of dementia. That raises an important question:

Could identifying and treating low iron be one of the many things we can do to support long-term brain health?

What the research found

A recent study published in JAMA Network Open followed more than 2,200 adults aged 60 and older for about nine years.

The researchers found that people with anemia had a 66% higher hazard of developing dementia compared with those without anemia. Participants with anemia also had higher blood levels of biomarkers associated with Alzheimer’s disease and neurodegeneration.

Importantly, this does not prove that anemia causes dementia—or that treating anemia will prevent it.

But it does highlight something worth paying attention to:

Anemia and iron deficiency are potentially treatable health problems

Unlike some dementia risk factors that we cannot change, iron deficiency can often be identified with blood testing and addressed when appropriate.

That makes maintaining healthy iron levels potentially one important component of a broader strategy for protecting brain health as we age.

Why this matters

Dementia is complicated. There isn’t one cause, and there isn’t one treatment that eliminates the risk.

Brain health is influenced by many factors, including genetics, cardiovascular health, exercise, sleep, nutrition, metabolic health, and other medical conditions.

Iron status may be another piece of that puzzle

If you are iron deficient or anemic, getting your levels evaluated and treating the underlying problem may be an important—and relatively straightforward—step toward optimizing your overall health and potentially reducing one modifiable risk factor associated with cognitive decline.

Of course, the goal isn’t simply to take more iron. The important first step is finding out whether you actually need it and why your levels are low.

If you need iron, IV treatment can be an efficient option

For people with confirmed iron deficiency who need significant replacement, IV iron can replenish iron stores much more efficiently than oral supplementation.

At Recharge Medical in San Francisco, our physicians have extensive experience providing IV iron replacement. We offer both iron sucrose and iron dextran formulations and can determine which approach is appropriate based on the patient’s individual needs.

High-dose treatments available for patients who qualify

One of the major advantages of our program is the ability to provide high-dose IV iron—up to 1,000 mg in a single visit for appropriately selected patients.

That can mean getting a substantial amount of your required iron replacement in one treatment rather than returning for multiple lower-dose infusions.

Fewer visits can mean less time away from work and daily life—and lower overall treatment costs.

Physician-administered IV iron in the Bay Area

IV iron should be treated as a medical therapy—not simply another wellness IV.

At Recharge Medical, your iron treatment is physician-directed and medically supervised, with appropriate evaluation and monitoring during the infusion.

Our direct-pay model also allows us to offer transparent pricing without requiring patients to navigate complicated insurance coverage. Because IV iron isn’t always covered by insurance, this can be an important advantage for patients who are paying out of pocket.

The bottom line

We don’t yet know whether treating iron deficiency directly reduces the risk of dementia.

But we do know that:

  • anemia is associated with increased dementia risk
  • iron deficiency is treatable, and
  • maintaining healthy iron levels is an important part of overall health.

When it comes to protecting your brain as you age, there probably isn’t one magic bullet.

It may be about taking care of all the modifiable pieces of the puzzle—and making sure low iron isn’t one of the pieces you’re overlooking.

If you’re experiencing persistent fatigue, brain fog, reduced exercise tolerance, or have been told that your iron is low, talk with a medical professional about getting your iron levels evaluated.

Learn more about IV iron replacement at Recharge Medical

For patients in San Francisco and the greater Bay Area, Iron Replacement IV Therapy at Recharge Medical provides physician-administered IV iron, including high-dose iron replacement options designed to efficiently restore iron levels.

Source

Valletta M, et al., Anemia and Blood Biomarkers of Alzheimer Disease in Dementia Development. JAMA Network Open, April 17, 2026.