A daily supplement of vitamin B6 could be a viable option for reducing symptoms of depression, according to a recent study published in the journal Depression and Anxiety. The nutrient, naturally found in foods such as tuna, bananas, and chickpeas, is thought to enhance the production of key brain chemical messengers involved in mood regulation.
In the trial involving 268 participants, those who took a 100mg daily tablet of vitamin B6 experienced a significant reduction in their depression scores. The study found that the positive impact on depressive symptoms was approximately three times greater than that observed in participants taking a placebo and five times greater than those taking vitamin B12.
Dr. David Field, the lead author of the study from the University of Reading, described the findings as a "big reduction in depression from a statistical point of view" and a "very large and robust effect." He explained that vitamin B6 aids in increasing levels of dopamine, serotonin, and gamma-aminobutyric acid (GABA) in the brain, neurotransmitters crucial for emotional regulation.
"An increase in these neurotransmitters is the most likely reason why we found that taking a regular high dose of B6 for a month produced a significant reduction in depression symptoms in people who were experiencing them," Dr. Field stated. He highlighted that depression is a widespread mental health condition, and many individuals opt against traditional drug treatments due to side effects or perceived ineffectiveness.
The study's results suggest a promising avenue for further research, with the potential for larger clinical trials to explore vitamin B6's impact on mood, either as a standalone intervention or in combination with established therapies. The researchers noted that the vitamin should be considered as a complementary treatment rather than a replacement for existing medications.
While the NHS recommends daily intakes of 1.4mg for men and 1.2mg for women, which are typically met through a balanced diet, this study utilized a significantly higher dosage of 100mg. Vitamin B6, also known as pyridoxine, plays a vital role in metabolism, brain development, immune function, and the formation of oxygen-carrying blood cells. It helps the body process proteins and carbohydrates.
However, the study also cautioned about the risks associated with excessively high doses. Consuming more than 200mg of vitamin B6 daily for extended periods can lead to peripheral neuropathy, a condition characterized by a loss of sensation in the arms and legs. Dr. Field advised against taking high doses of pyridoxine, the chemical form often found in supplements, suggesting that a supplement made from pyridoxal phosphate, which has no known side effects, might be a safer alternative for preventative doses.
Previous research has also indicated potential benefits of vitamin B6, with a 2018 study suggesting that taking a strong dose for five days could improve dream recall by 64 percent.