Is vitamin B12 deficiency causing my insomnia at 46?

Question

Hello doctor,

I am a 46-year-old patient and have been struggling with severe insomnia for almost two years, where I find it very hard to fall asleep and often wake up three to four times during the night. Most days, I barely manage three to four hours of interrupted sleep, making me constantly fatigued, irritable, and unable to focus on my office work.

Along with insomnia, I have been diagnosed with generalized anxiety disorder, and I feel my anxiety levels shoot up at nighttime, making it even more difficult to relax and sleep.

My last blood pressure reading was 152/96 mmHg, and my physician told me that I am at risk of developing hypertension if stress and lack of sleep continue. My recent HbA1c (glycated hemoglobin) level was 6.1 percent, which indicates prediabetes, and I am worried whether poor sleep is worsening my glucose control.

I also checked my vitamin B12 levels, which came out low at 195 pg/mL, and I wonder if that deficiency contributes to fatigue and poor sleep quality. I have tried Melatonin 3 mg at night, but it gives me only one to two hours of rest, and I feel drowsy in the morning. I was advised to try cognitive behavioral therapy for insomnia, but I do not know how effective it is compared to medications like Zolpidem.

My family also has a history of heart disease, and I fear that my long-term sleep issues, along with my elevated BP (blood pressure) and sugar values, may increase my risks further.

Could you please guide me on whether treating my anxiety and vitamin deficiencies will improve my sleep, and what safe long-term treatment options are available for managing both insomnia and related conditions?

Please suggest.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I have read your query and can understand your concern.

They are deeply connected. Treating your anxiety is a direct and essential step to improving your sleep. Cognitive behavioral therapy for insomnia (CBT-I) is highly effective for this, as it addresses the underlying anxiety and negative thoughts about sleep.

You have a vitamin B12 Deficiency as your level is low at 195 pg/mL and is very likely contributing to your fatigue, poor concentration, and potentially mood issues. Correcting this deficiency is a safe and crucial first step. Chronic poor sleep can worsen both blood sugar control and blood pressure. Improving your sleep will positively impact these conditions.

A combined approach is best for long-term safety and effectiveness, especially given your family history of heart disease. CBT-I is the gold standard. It is as effective as sleep medications in the short term and more effective for long-term maintenance without side effects. It is safer than medications like Zolpidem, which are best for short-term use.

Follow your physician's plan to correct the B12 deficiency. Control your stress and anxiety. Continue CBT-I and consider therapy specifically for anxiety. Work with your physician on diet, exercise, and weight management, which will also improve sleep for maintaining blood pressure and sugar.

Discuss the limited benefits of melatonin with your doctor. A sleep specialist can explore other prescription options if needed, but the foundation should be CBT-I and treating the underlying causes.

I hope this answers your query.

Let me know if I need to assist you further.

Thank you.