Low iron levels linked to higher dementia risk, new research suggests
A new study by researchers at Stockholm University has found that people with low iron levels may face a higher risk of developing dementia later in life.
The research, published in the journal Neurology, adds to growing evidence that physical health conditions like anaemia could play a role in brain health.
Read the full research here: Read the study on PubMed
What the study found
The researchers looked at large groups of adults over time and found that iron deficiency and anaemia were linked to an increased risk of dementia.
In one large Swedish study, people with low iron or anaemia were significantly more likely to develop dementia compared to those with healthy iron levels.
Another related study of over 2,000 older adults found that those with anaemia had about a 66% higher risk of developing dementia over time.
Why could low iron affect the brain?
Iron is essential for the body because it helps carry oxygen in the blood. When iron levels are low, the body may not deliver enough oxygen to the brain.
Researchers believe this can lead to:
- Reduced oxygen supply to brain cells
- Increased stress and damage to brain tissue
- Changes linked to Alzheimer’s disease and other dementias
Over time, these effects may contribute to memory problems and cognitive decline.
Signs and symptoms of anaemia
Anaemia (often caused by low iron) can sometimes go unnoticed. Common symptoms include:
- Feeling tired or weak
- Shortness of breath
- Pale skin
- Dizziness or headaches
- Cold hands and feet
- Heart palpitations
Recognising these early could be important, not just for physical health but potentially for long-term brain health too.
What this means for health and social care
This research highlights the importance of:
- Early screening for anaemia, especially in older adults
- Supporting good nutrition and iron intake
- Monitoring long-term conditions that may affect blood health
For care providers, it reinforces how physical health and cognitive health are closely linked, and how early intervention could reduce future risks.
A growing area of research
While more studies are needed, experts say these findings could open new ways to prevent or delay dementia.
Addressing something as common as low iron levels may become an important part of protecting brain health in later life.
