Age-related hearing loss and the findings of Lion's Mane (Hericium erinaceus) research.
Hearing impairments and their causes in older ageAge-related hearing loss (presbycusis) is a common issue among the elderly, significantly impacting quality of life. The main causes are as follows:
- Sensory nerve damage: Loss of hair cells in the inner ear.
- Reduced blood circulation: Atherosclerosis and damage to the microvessels.
- Oxidative stress: Cell damage caused by free radicals.
- Decrease in neurotrophic factors: The decline in NGF (nerve growth factor) and BDNF (brain-derived neurotrophic factor), which deteriorates the health of nerve cells.
The potential benefits of Lion's Mane (Hericium erinaceus) for hearing.
A recent study published in the Journal of Functional Foods focused on the effects of Lion’s Mane mycelium enriched with erinacine A on hearing. The study involved 80 participants aged 50–79 years. The research group was divided into two groups:
- Test group: Consumed 2000 mg of Lion’s Mane mycelium daily for eight months.
- Control group: Got placebo.
Results:
- In individuals over 65 years old: Significant improvement was observed in the perception of high-frequency sounds and speech comprehension.
- Increase in NGF levels: Nerve growth factor increased, supporting the health of the auditory nerves.
In individuals under 65 years old: No significant changes were observed.
Why does Lion's Mane work?
Lion's Mane (Hericium erinaceus) mycelium contains erinacine A, which has two hearing-supporting effects:
- Stimulation of NGF (nerve growth factor) production: NGF supports the regeneration and protection of the auditory nerves and inner ear nerve cells.
- Reduction of oxidative stress: Erinacine A acts as an antioxidant, protecting inner ear cells from damage.
Conclusion and future outlook
The results of the study suggest that regular consumption of Lion’s Mane mycelium may help slow down age-related hearing loss, particularly in individuals over 65. However, the researchers emphasize that studies with a larger number of participants and longer duration would help confirm the findings and provide more precise dosage recommendations.