Fasting and Depression: How Fasting Affects Mental Health

Fasting has been used for centuries by various cultures and religions as a way to cleanse the body and mind. Recent studies suggest that fasting can also improve mental health by reducing the symptoms of depression. The following article will explore the relationship between fasting and depression, and the potential benefits and risks of fasting for individuals with depression.

What is Depression?

Depression is a common mental health disorder that affects millions of people worldwide. It is characterized by persistent feelings of sadness, hopelessness, and worthlessness, which can have a significant impact on daily activities, relationships, and overall quality of life. Depression can be caused by a wide range of factors, including genetics, environment, and life events, and it can be treated with therapy, medication, and lifestyle changes.

What is Fasting?

Fasting is the practice of abstaining from food and drink for a certain period of time. It has been used for thousands of years as a religious and cultural practice and has gained popularity in recent years as a health and wellness trend. There are several ways to fast, including:

  • Intermittent fasting: Eating within a specific window of time each day, usually between 8-10 hours.
  • Water fasting: Not consuming any food or drink except for water for a specific period of time.
  • Juice fasting: Consuming only fruit and vegetable juices for a specific period of time.

The Link Between Fasting and Depression

Research suggests that fasting can have a positive effect on mental health, including reducing the symptoms of depression. According to a 2019 study published in the Journal of Affective Disorders, intermittent fasting showed significant improvements in symptoms of depression, anxiety, and stress in patients with major depressive disorder.

The study found that fasting improved brain function by increasing the production of brain-derived neurotrophic factor (BDNF) and reducing inflammation. BDNF is a protein that helps support the growth and survival of neurons in the brain, and low levels of BDNF have been linked to depression and other mental health disorders.

In addition, fasting promotes autophagy, a process by which the body breaks down and recycles damaged or dysfunctional cells to improve cellular health. This process reduces oxidative stress and inflammation, which have been linked to depression and other mental health disorders.

The Benefits of Fasting for Depression

In addition to reducing symptoms of depression, fasting has several potential benefits for mental health, including:

Improving Brain Function

As mentioned above, fasting can increase the production of BDNF, which can improve cognitive function and reduce the risk of neurodegenerative diseases like Alzheimer’s and Parkinson’s.

Reducing Inflammation

Inflammation has been linked to depression, anxiety, and other mental health disorders. Fasting can reduce inflammation by promoting autophagy and reducing oxidative stress.

Regulating Mood

Fasting can help regulate mood by reducing fluctuations in blood sugar levels and promoting the production of endorphins, which are natural mood-boosters.

The Risks of Fasting for Depression

While fasting can have several potential mental health benefits, there are also risks associated with fasting for individuals with depression. Fasting can lead to low blood sugar levels, which can cause irritability, fatigue, and difficulty concentrating.

In addition, fasting can exacerbate symptoms of depression for some individuals. It is important to talk to a healthcare provider before starting a fasting regimen, especially if you have a history of depression or other mental health disorders.


Fasting has several potential mental health benefits, including reducing symptoms of depression, improving brain function, reducing inflammation, and regulating mood. However, fasting should be approached with caution, especially for individuals with depression or other mental health disorders. It is important to talk to a healthcare provider before starting a fasting regimen and to monitor any changes in symptoms or mood during the fasting period.


FAQs about Fasting and Depression

1. Can fasting help with depression?

Fasting has been shown to have potential benefits for mental health, including depression. When our body is in a fasted state, it produces ketones, which have an antidepressant effect. Additionally, fasting can increase brain-derived neurotrophic factor (BDNF), a protein that promotes the growth and survival of neurons, which can improve our mood and cognitive function.

2. Is fasting safe for people with depression?

While fasting can have potential benefits for people with depression, it’s important to consult with a healthcare professional before starting any fasting regimen. Fasting can trigger mood changes and other side effects, and may not be suitable for everyone, especially those with certain medical conditions or on medication.

3. What types of fasting are recommended for depression?

There are several types of fasting, including water fasts, juice fasts, and intermittent fasting. More research is needed to determine which type of fasting is most effective for depression. However, it’s important to choose a fasting plan that is safe, sustainable, and fits your individual needs and lifestyle. Working with a healthcare professional or registered dietitian can help you develop a safe and effective fasting plan.


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3. Schürmann, L., Foroni, F., & Wiebking, C. (2019). Effects of prolonged fasting on the neural correlates of empathic processing. Social cognitive and affective neuroscience, 14(1), 49-56. Retrieved from