Vitamin B12 linked to insomniaAssociation of Vitamin B12 Levels with Sleep Quality, Insomnia, and Sleepiness in Adult Primary Healthcare Users in Greece.
Most Relevant Research
We assessed the relationship between vitamin B12 levels and insomnia symptoms in a diverse group of adults visiting primary healthcare clinics in Greece. Our research involved 512 participants, from which we gathered a variety of information including age, weight, and health history. Using standardized scales, we measured excessive daytime sleepiness, insomnia symptoms, and overall sleep quality.
Our findings highlighted that lower vitamin B12 levels, particularly below 342 pg/mL, were linked to increased insomnia symptoms. This association was particularly pronounced in certain groups, such as elderly, non-obese, and female participants. Interestingly, we found that excessive daytime sleepiness connected with low B12 levels only affected obese participants.
However, we did not find a significant connection between vitamin B12 levels and poor overall sleep quality. This indicates that while vitamin B12 may play a role in insomnia for specific individuals, its impact on sleep quality itself remains unclear. Therefore, while our study sheds light on these associations, further research is needed to explore the underlying dynamics between sleep and vitamin B12 more fully.