Integrative Approach to Anxiety and Depression (Brown, 10/30/2024)

A recording of this presentation is available HERE.

Many thanks to Dr. Andrew Brown, who gave an excellent Grand Rounds presentation this week on Integrative Approach to Anxiety and Depression. Anyone in primary care knows that we do a lot of management of psychiatric disorders in the primary care setting, often with very little specialty support. Many patients are interested in pursuing not just standard medical therapy (SSRI + cognitive behavioral therapy), but also integrative modalities.

Dr. Brown laid out the evidence for a wide range of non-pharmaceutical and non-psychotherapy treatments for anxiety and depression. The bottom line is that there are many, many, many integrative options with a range of small to moderate to strong evidence for the management of anxiety/depression. Put your seatbelts on. And don't use too many at once!

Integrative modalities, for the purpose of this talk include 

• lifestyle/behavioral 
• nutrition 
• supplements and 
• physical practices

Lifestyle/behavioral

Exercise works! The USPSTF recommends 2.5 hours/week of aerobic exercise for overall improved health. And good news, exercise can improved depression!  Some exercise modalities may be better than others, including: include walking/jogging/yoga/strength training. The more "intense" the better. However, in a 2023 review article, ANY regular exercise, regardless of type, setting, or supervision decreased depression scores by 5-7 points. 

There is not much evidence for exercise in anxiety, with a different review paper finding a benefit of exercise for anxiety in 7 of 25 studies and no benefit in the remaining 18.

It should come as no surprise that substance use and substance use disorders are frequent comorbidities with anxiety and depression. Note in the chart below:

• 16% of people with anxiety disorder also have SUD
• 16% of people with an adjustment disorder also have SUD
• 16% of people with depression also have SUD

Nicotine and tobacco, alcohol, and yes, even marijuana>>worsen anxiety

Sleep and anxiety/depression, as we know, have a bidirectional relationship. Treating the underlying cause of sleep helps (e.g. sleep disordered breathing). If you target insomnia, you improve mental health.

Social support helps too. Social support and connectedness -- perhaps even via online platforms-- helps depression and anxiety, even in people with a diagnosed social anxiety disorder!

Time spent in the natural world, including activities like "forest bathing", nature-based treatment, gardening, wilderness time, outdoor adventuring all have a positive effect on mood and anxiety. Many of the studies looking at time in nature are Korean studies, and plenty show positive effect, which is durable (at least up to 12 weeks after the outdoor time). One study even found that LOOKING at images of nature had a positive impact on mood. 

Nutrition 

Eating a healthy diet improves depression and anxiety! And there are plenty of different healthy diets that have been shown to improve mood in a 2021 Systematic Review: a diet high in fruits/veggies, a diet with less calories, a diet high in omega-3 fatty acids, probiotics, a diet rich in dietary minerals, and a ketogenic diet. Even eating breakfast works!

What doesn't work? An unhealthy diet: insufficient protein, high fat, lots of carbs/sugars, and a diet low in tryptophan (which is found in protein-rich foods, not just turkey).

Supplements

Many many botanicals are used to treat symptoms of depression anxiety. Four that Dr. Brown highlighted with moderate/strong evidence for positive effect are:

• Kava Kava (Piper methysticum): 50-70mg TID, mixed evidence, some concern for hepatoxicity
• St. John's Wort (Hypericum perforatum): strong evidence in depression, 500-1800mg/day. A 2017 Meta-analysis found it to be equivalent to SSRIs (of note, not safe to take at same time as SSRIs)
• Saffron (Crocus sativus): 30-200mg/day, strong evidence for depression and anxiety, $$ cost can be an issue, also concerns regarding first trimester SAB in early pregnancy
• Lavender (Lavandula angustifolia): "a few drops", moderate evidence, compared to lorazepam in a trial of preoperative patients was found to be "equivalent". SE: gynecomastia
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Probiotics: studies show a small but consistent positive effect in depression/anxiety (not enough to be used as monotherapy, but consider for adjunct)

Vitamin Supplements

Dr. Brown highlighted five vitamins with some efficacy in depression/anxiety:

• Vitamin D: stronger evidence in depression (than anxiety)
• B Complex, found in dark/green/leafy veggies, may be good adjunct
• Zinc: dose response benefit in depression and anxiety
• Magnesium: strong evidence as either monotherapy OR adjunct, depression more than anxiety, change of 4 points on GAD7 or PHQ9, so may be good choice for mild-mod depression/anxiety

Physical Practices

Dr. Brown finished up his presentation talking about a range of physical practices that, again, have some evidence for treatment of depression and/or anxiety, specifically:

• Acupuncture: 2024 Meta-analysis found that acupuncture was BETTER than SSRIs for depression, particularly if electro-acupuncture techniques are used. Most studies indicate that a combination of SSRI and acupuncture decreases rates of remission. There is less evidence for acupuncture in anxiety.
• Acupressure: no evidence for durable benefit, but may be good for episodic symptoms (and can be self-done)
• Progressive Muscle Relaxation: strong evidence in pre-procedural anxiety and symptoms report for patients. There are a wide range of muscle relaxation techniques, many can be taught in just a few minutes in the office setting
• Breathwork: Once again, there are many different breath practices. Two easy ones to teach in the office are: Box, 4-7-8 (see images below). Both have been shown to help with symptom management

Finally, do Apps work? Apps tend to be cheap and easy for patients to get, particularly in a low resource. According to Dr. Brown. There have been 50+ studies, including an RCT, looking at apps for physical practice changers, and they have shown a significant but small/moderate effect on depression/anxiety. So consider apps an option too!

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