Loss of Smell: Early Warning Sign for Heart Disease & Stroke?

The ability to smell may be a surprisingly powerful early indicator of heart and brain health. Recent research suggests a link between loss of smell and increased risk of serious cardiovascular events.

The Connection Between Smell and Health

A study conducted by researchers at the University of Michigan and published in Jama Otolaryngology followed 5,142 adults for nine years. The findings revealed that adults over 70 who experienced a total loss of smell – known as anosmia – had a significantly higher risk of stroke and coronary artery disease, including angina and ischemia.

Did You Know? The research tracked participants for nine years, revealing that those with anosmia faced a doubled risk of cardiovascular events, particularly within the first four years after the initial smell test.

Previously, smell disorders were primarily associated with neurodegenerative diseases, where inflammation of the nervous system plays a key role. This new research suggests that inflammation may be a common factor linking both neurological and cardiovascular health.

Inflammation as a Common Link

Arianna Di Stadio, a neuro-otorinolaryngologist at the University Link of Rome and a researcher at UCL Queen Square Neurology in London, highlights the significance of this discovery. “Until recently, we considered smell only in relation to neuroinflammatory and neurodegenerative diseases,” she explains. “Today, we understand that the loss of senses can reflect a state of systemic inflammation that also affects the cerebral and cardiac blood vessels.”

Expert Insight: The findings suggest that anosmia may not simply be a symptom, but a warning sign of underlying inflammation impacting the vascular system, potentially allowing for earlier intervention.

Researchers hypothesize that anosmia could be a result of structural changes in cerebral blood vessels or degeneration of the nasal epithelium due to inflammatory processes.

Early Detection and Prevention

The good news is that a smell test is a quick and inexpensive procedure. According to Di Stadio, incorporating this test into routine check-ups by primary care physicians could help identify patients experiencing early stages of neuroinflammation, allowing for closer monitoring and preventative measures.

The decline of senses and brain function isn’t solely determined by age. Factors like diet, exercise, and preventative supplementation with anti-neuroinflammatory substances – similar to those used in previous Covid studies – could play a significant role in combating neuroinflammation. Protecting your sense of smell, researchers suggest, ultimately means protecting your heart and brain.

Frequently Asked Questions

What did the University of Michigan study find?

The study found that adults over 70 with a total loss of smell had a doubled risk of stroke and coronary artery disease compared to those who maintained a normal sense of smell.

What is the role of inflammation in this connection?

The research suggests that inflammation of the nervous system may be a common factor linking loss of smell with an increased risk of cardiovascular events.

Could a simple smell test help prevent serious health problems?

According to Arianna Di Stadio, incorporating a smell test into routine medical check-ups could help identify patients with early signs of neuroinflammation, allowing for more proactive monitoring and preventative care.

Considering these findings, how might a heightened awareness of changes in your sense of smell influence your approach to preventative healthcare?