In our last post, we explored serotonergic herbs and their gentle way of “inclining the spirit towards joy.” Today, I want to talk about something I see often in clinical practice – the complex dance between anxiety and depression. While the serotonergic support we discussed last time remains foundational when these conditions co-occur, some people need additional help with the anxiety component of their experience.
Understanding why anxiety and depression so often appear together requires looking at how our brain’s networks interact. Remember how depression can involve the Default Mode Network getting stuck in patterns of rumination? Anxiety can amplify this effect, creating a kind of double-bind where depressive thoughts trigger anxiety, which then intensifies the depression. It’s like two instruments playing off each other, each making the other’s song louder.
This interaction shows up clearly in brain imaging studies. When anxiety accompanies depression, we often see increased activation in the amygdala (our threat detection center) alongside the disrupted network patterns we discussed last time. The GABA system plays a major role here – it’s our brain’s main inhibitory network, helping to calm overactive circuits and maintain balance in our nervous system.
This understanding helps explain why certain herbs can be particularly helpful when anxiety and depression occur together. Take lavender, for example. While most people think of it primarily for anxiety, research on standardized lavender oil (Silexan) shows it has both GABA-ergic and serotonergic effects – the calming GABA effects can be felt relatively quickly, while the mood-lifting serotonergic action typically takes a few weeks to fully develop.
This dual action mirrors what we see with saffron, which we discussed in some detail last time. Both herbs seem to work through multiple mechanisms rather than affecting just a single pathway. This might explain why they can be particularly helpful when anxiety and depression appear together – they’re addressing multiple aspects of the disrupted brain networks simultaneously.
However, sometimes these primary serotonergic herbs need support, which is where two traditional categories of herbs become valuable allies: nervine tonics and nervine sedatives. Understanding the difference between these categories opens up more nuanced ways of working with anxiety alongside depression.
Nervine tonics are like gentle teachers for your nervous system, helping to improve resilience without causing sedation (for most people). Think of herbs like milky oats, which herbalists have long used to support people who feel “burnt out” or “tired and wired” (my favorite phrase for the specific indications is “fried and dried”.)
Other important nervine tonics include skullcap, which traditionally helps ease the mental tension that often accompanies depression, and damiana, which herbalists have long used for its gently uplifting effects. Ashwagandha – while often categorized as an adaptogen (a term I find clinically useless), shows nervine tonic properties, plus improves quality of sleep, and decreases sleep onset latency (and might owe many of its effects on the nervous system to these sleep promotion properties.)
Nervine sedatives, on the other hand, work more directly to calm an overactive nervous system. Blue vervain, motherwort, pulsatilla, and chamomile fall into this category. While these can be valuable allies for acute anxiety, their real magic lies in how they can be used preventatively in lower doses. It’s like giving your nervous system a gentle reminder that it can shift into a calmer state, rather than forcing it there with higher doses.
A key point about working with these herbs – timing and dosage matter enormously. While nervine tonics and the serotonergic herbs we discussed last time generally need consistent daily use to show their full effects, sedatives can be used more flexibly. Some people do best with daily small doses while others might need larger doses of nervine sedatives only during periods of acute anxiety.
This flexibility in approach reflects a deeper understanding that traditional herbalists captured beautifully in their language. When old herbals talk about ‘strengthening the spirits’ with nervine tonics or ‘calming disturbed spirits’ with nervine sedatives, they’re describing what we now understand as supporting healthier network function and balance in neurotransmitter systems.
Supporting this balance becomes even more important when we consider motivation and energy – which brings us to our next topic.
In our next post, we’ll explore the third category in our series – stimulant herbs that support dopamine and norepinephrine, particularly helpful when depression manifests with severe fatigue and lack of motivation. Until then, consider how this understanding of anxiety and depression as interrelated patterns might change how you think about supporting mental health – whether your own or others’.
With care,
-Thomas