The Brain

With St. John's Wort, there isn't a cloud in the sky. Or is there?

21 March 2023
Alex Schulz

Can St. John's Wort really make dark clouds disappear? This ancient plant has long been used as a natural remedy for low moods and depression. But despite its popularity and the growing number of recommendations, questions remain about its effectiveness and safety as a treatment for mental health issues.

Let's delve deeper into what St. John's Wort is, how it is used, and the science behind it.

The origin of St. John's Wort

St. John's Wort has a long history of use as a medicinal herb. Originally used by the ancient Greeks and Romans for its healing properties, the herb later became popular in the Middle Ages, where it was used to treat various ailments, from wounds to anxiety. Its name, derived from the day it was traditionally harvested, St. John's Day on June 24, adds to its mystical aura.

How does St. John's Wort work?

But let's look at the science behind St. John's Wort's ability to improve our mood. The herb contains several active compounds, including hypericin and hyperforin, which play a role in increasing the levels of neurotransmitters like serotonin in the brain. These neurotransmitters are involved in regulating our mood and sense of well-being.

"Hypericin and hyperforin in St. John's Wort inhibit the reuptake of serotonin in the synapses, leaving more of these 'happy hormones' available in the brain. This can lead to an improved mood and relief from symptoms of depression."

Possible side effects and interactions

Although St. John's Wort is known for its positive effects on mood, there are some potential adverse effects to keep in mind. For instance, the herb can cause side effects such as stomach upset, dizziness, and fatigue, especially with long-term use or high doses. Additionally, it can reduce the effectiveness of certain medications by interacting with their metabolism in the liver, including birth control pills, antidepressants, and blood thinners.

The simultaneous use of St. John's Wort and certain antidepressants can lead to a potentially severe reaction known as serotonin syndrome. Antidepressants, such as selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs), work by increasing the levels of serotonin in the brain. When St. John's Wort is taken in combination with these medications, it can lead to an excess of serotonin in the brain, resulting in serotonin syndrome.

Conclusion

St. John's Wort is an herb with a long history of use as a natural remedy for low moods and depression. While it may be effective for some in improving mood and promoting well-being, it is important to be cautious with its use, especially in combination with other medications.