B12 Deficiency And Night Sweats


Are you experiencing night sweats and wondering if a vitamin deficiency could be playing a role? If so, you are not alone. Many individuals are seeking to understand the connections between their body’s nutrient status and their sleep quality. One vitamin deficiency that is potentially linked to night sweats is vitamin B12. In this article, we will delve into the role of vitamin B12 in the body, its causes of deficiency, and how this deficiency is linked to night sweats.

Furthermore, we will guide you through the process of diagnosing vitamin B12 deficiency-related night sweats and offer practical tips for managing and treating it.

So, let’s embark on this journey together, and take steps toward achieving restful and sweat-free nights, all while improving your overall health and well-being.

Read our articles on the Diet And Night Sweats for an overview of the relationship between diet and night sweats.

I. Understanding Vitamin B12 Deficiency

The role of vitamin B12 in the body is crucial for maintaining proper health and preventing night sweats. Vitamin B12 is involved in several essential processes, such as:

  1. Red blood cell production – Vitamin B12 is necessary for the creation of healthy red blood cells, which are responsible for carrying oxygen throughout the body.
  2. DNA synthesis – B12 plays a key role in the replication and repair of DNA, which is vital for the overall function of cells and tissues.
  3. Nerve function – Vitamin B12 contributes to the proper functioning of the nervous system by assisting in the formation and maintenance of the myelin sheaths that protect nerves.

There are several factors that may lead to a vitamin B12 deficiency, including:

  1. Inadequate dietary intake – A lack of B12 in the diet is a common cause of deficiency, particularly for individuals following strict vegetarian or vegan diets, as the nutrient is primarily found in animal-based products.
  2. Malabsorption conditions – Certain digestive disorders, such as celiac disease, Crohn’s disease, or gastric bypass surgery, can impair the body’s ability to absorb vitamin B12 from the gut.
  3. Pernicious anemia – This autoimmune condition prevents the production of intrinsic factor, a protein required for the absorption of vitamin B12 in the body.
  4. Medication interference – Some medications, including certain acid-reducing drugs and diabetes medications, may negatively affect the absorption of vitamin B12, resulting in a deficiency.

There are various mechanisms by which vitamin B12 deficiency can contribute to night sweats. These can be broadly categorized into the impact on the nervous system, hormonal imbalances, and support of the normal sleep cycle.

A. Impact on the nervous system

  • Peripheral neuropathy: Vitamin B12 deficiency can lead to damage of the nerve cells, which are responsible for transmitting signals between the brain and the rest of the body. This can interfere with the body’s normal regulation of temperature, potentially causing night sweats.
  • Autonomic dysfunction: Vitamin B12 is crucial for maintaining the function of the autonomic nervous system, which controls involuntary bodily functions like temperature regulation. Deficiency in the vitamin can impair this system, contributing to night sweats.

B. Hormonal imbalances

  • Estrogen and progesterone: Vitamin B12 deficiency can lead to hormonal imbalances, particularly in women. This can affect the production of estrogen and progesterone, both of which play a role in regulating body temperature, possibly leading to night sweats.
  • Thyroid hormones: An insufficient supply of vitamin B12 can also impact the production of thyroid hormones, which help control the body’s metabolic rate and temperature regulation. This can result in night sweats.

C. Support of the normal sleep cycle

  • Melatonin production: Vitamin B12 is vital for the synthesis of melatonin, a hormone that regulates the sleep-wake cycle. A deficiency in vitamin B12 can disrupt melatonin production, leading to sleep disturbances and night sweats.
  • Quality of sleep: Adequate levels of vitamin B12 are essential for maintaining a healthy sleep cycle. A deficiency in the vitamin can result in poor sleep quality, which can, in turn, contribute to night sweats.

A. Medical consultation

Discussing your symptoms and concerns with a healthcare professional is a vital step in diagnosing the link between vitamin B12 deficiency and night sweats. Doing so can provide valuable insights and recommendations for further examination. During your consultation, your doctor may suggest blood tests to assess your vitamin B12 levels, which can help confirm a deficiency or rule out other potential causes of your night sweats.

B. Identifying other potential causes of night sweats

It is essential to rule out all potential factors that may contribute to night sweats since they could be caused by various medical conditions or imbalances. In addition to assessing your vitamin B12 levels, your healthcare provider may perform other tests or examinations to eliminate other potential causes, such as hormonal imbalances, sleep apnea, or hyperthyroidism.

IV. Solving the Issue: Treating Vitamin B12 Deficiency and Managing Night Sweats

Addressing vitamin B12 deficiency and managing the associated night sweats involves a combination of supplementation, dietary changes, and lifestyle modifications. Here are some strategies to help alleviate night sweats and improve overall health:

A. Vitamin B12 supplementation

Incorporating vitamin B12 supplements can be an effective way to increase B12 levels and reduce night sweats. Some options include:

  1. Oral supplements: Over-the-counter oral vitamin B12 supplements are available in various forms, such as capsules or tablets, and can help increase B12 levels in the body.
  2. Sublingual tablets or drops: These supplements are placed under the tongue and quickly absorbed into the bloodstream, which may lead to faster results.
  3. Vitamin B12 injections: For severe cases or individuals who cannot absorb B12 through the digestive system, healthcare professionals may administer vitamin B12 injections to directly increase levels.

B. Dietary changes

Making adjustments to your diet can help ensure adequate intake of vitamin B12 and potentially reduce night sweats:

  1. Incorporating vitamin B12-rich foods in the diet: Consume foods naturally high in vitamin B12, such as fish, poultry, eggs, dairy products, and fortified cereals.
  2. Considering fortified foods or supplements: For individuals following a vegetarian or vegan diet, opt for B12-fortified foods or plant-based supplements to maintain optimal B12 levels.

C. Lifestyle modifications

Implementing the following lifestyle changes may help reduce the occurrence of night sweats related to vitamin B12 deficiency:

  1. Ensuring proper sleep hygiene: Create a comfortable sleep environment by keeping the bedroom cool and dark, using breathable bedding, and maintaining a consistent sleep schedule.
  2. Managing stress through relaxation techniques: Practice stress-reducing activities, such as deep breathing exercises, meditation, or yoga, as stress can exacerbate night sweats.
  3. Regular exercise and maintaining a healthy body weight: Engage in regular physical activity and maintain a healthy weight, as excess body fat can contribute to night sweats.

Consult with a healthcare professional before incorporating any new supplements or making significant dietary changes to ensure they are appropriate for your individual needs.

V. Frequently Asked Questions

Can vitamin B deficiency cause excessive sweating?

Vitamin B deficiency, specifically B12, may cause excessive sweating, as it is involved in nerve function and temperature regulation within the body.

What are the symptoms of very low B12?

Symptoms of very low B12 include fatigue, weakness, dizziness, shortness of breath, heart palpitations, pale skin, numbness or tingling, memory problems, and neurological issues.

What happens to your body when your B12 is extremely low?

When B12 levels are extremely low, the body struggles to produce sufficient red blood cells, which can lead to anemia, neurological complications, and cognitive impairment, potentially causing long-term damage to the nervous system if left untreated.


If you continue to experience night sweats and suspect vitamin B12 deficiency as a contributing factor, we encourage you to consult with a healthcare professional. They can help pinpoint the root cause of your symptoms and recommend the most suitable course of action tailored to your specific situation.

Keep in mind that taking control of your health by understanding the potential causes of night sweats and making informed decisions about your diet and lifestyle is essential. By doing so, you can work towards alleviating the discomfort of night sweats and enhancing your overall well-being.

Medical Disclaimer: This article is for informational purposes only and should not be considered professional medical advice. It is always recommended to consult with a healthcare professional before making any changes to your treatment plan, diet, or lifestyle. StopTheNightSweats.com is not responsible for any actions taken as a result of the information provided in this article.