Exercise and serotonin have been linked in studies, indicating that serotonin levels can be increased through exercise. Overall, exercise has a positive effect on the mind and body when done in proper doses.
Depression, Exercise and Serotonin
According to Health Direct, serotonin levels can be increased naturally by exercising, and increased serotonin can help combat depression, anxiety, panic disorder, post-traumatic stress disorder and obsessive-compulsive disorder.
One 2014 study in the European Journal of Psychology and Educational Studies found that even mild to moderate levels of exercise, two to three times a week, can reduce symptoms of depression, though the quantities of blood-level serotonin tested in a small sample size of individuals were not found to be highly significant.
Serotonin has a long history of being linked to depression. However, recent studies have demonstrated that the link is not as straightforward as thought. According to a June 2015 paper in World Psychiatry, simple biochemical theories that link low levels of serotonin with symptoms of depression are no longer viable. The connection between exercise and serotonin is a complex one that doesn't necessarily denote correlation despite widely held beliefs.
Serotonin and Dopamine Differences
What's the difference between dopamine and serotonin? Like serotonin, dopamine plays a role in mood and can be boosted with exercise. According to Health Direct, low levels of dopamine have been linked to certain mental illnesses, such as depression.
In terms of function, dopamine allows nerve cells to pass messages to each other and helps you feel pleasure, satisfaction and motivation. Similarly, serotonin helps your body to send messages between nerve cells. It serves several different functions, explains Health Direct, including controlling mood and happiness.
Exercise and Mental Health
The Department of Health and Human Services recommends that adults get at least 150 minutes to 300 minutes a week of moderate intensity aerobic exercise or 75 minutes to 150 minutes of vigorous intensity aerobic exercise per week. Adults should also do strength training activities of moderate to vigorous intensity twice a week.
According to Better Health Channel, people who exercise regularly have fewer symptoms of depression and anxiety than those who don't exercise. Moreover, 16 weeks of exercise was found to be just as effective as antidepressant medicine in treating older patients who were not exercising prior to beginning their workout routine.
Vitamin D Regulates Serotonin Synthesis
Though there aren't "serotonin vitamins," there are vitamins and supplements known to affect serotonin regulation. According to a research review article published in The FASEB Journal in February 2015, serotonin is important for proper brain functioning and vitamin D has been shown to modulate normal levels of serotonin.
Therefore preventing vitamin D deficiency can help protect from serotonin deficits associated with certain psychiatric disorders, such as attention deficit hyperactivity disorder and bipolar disorder.
Moreover, fish oil supplementation rich in omega-3 fatty acids have also been shown to have potentially beneficial effects on the brain, optimizing serotonin signaling.
- Health Direct: "Serotonin"
- European Journal of Psychology and Educational Studies: "A Pilot Study on the Effects of Exercise on Depression Symptoms Using Levels of Neurotransmitters and EEG as Markers"
- Health Direct: "Dopamine"
- Mayo Clinic: "Exercise and Anxiety: "Exercise Eases Symptoms"
- Mayo Clinic: "Stress Management"
- Department of Health and Human Services: "Physical Activity Guidelines for Americans"
- Better Health Channel: "Exercise and Mood"
- The FASEB Journal: "Vitamin D and the Omega-3 Fatty Acids Control Serotonin Synthesis and Action, Part 2: Relevance for ADHD, bipolar Disorder, Schizophrenia, and Impulsive Behavior"
- World Psychiatry: "What Does Serotonin Have to Do With Depression?"
- Frontiers in Psychology: "Neuromudulation of Aerobic Exercise - A Review"