Alternatives treatments for depression 2
alternatives treatments for depression 3
food, fish oils & other supplements, acupuncture,
relaxation, hypnosis & meditation
Only dead fish swim with the stream.
Anon
This is the last in a series of three articles by James Hawkins on alternative treatments to drugs and talking therapies for depression. The first article focused on exercise and ‘wake’ therapy. The second discussed light and St John’s wort. This third article looks at the value of food, fish oils & other supplements, acupuncture, and relaxation, hypnosis & meditation.
about the author:
I am a medical doctor, Chinese-trained acupuncturist and accredited cognitive therapist. I am also a member of the clinical advisory group for Depression Alliance Scotland, the country’s main consumer-led charity for depression sufferers. In 1983 I was one of the initial group of doctors who set up the BHMA. Currently I work through ‘Good Medicine’ a small Edinburgh-based charity that focuses on helping people with psychological difficulties. Good Medicine tries to use therapies (conventional, complementary and self-help) with better research support before, if necessary, adding in methods that are currently less evidence-based. Good Medicine is also clear that knowledge evolves but the heart of medicine remains constant in the care and sensitivity with which it is practised.
summary:
The first article in this three part series highlighted that depression is the largest single cause of non-fatal disease burden worldwide [1], accounting for nearly 12% of total days lived with disability. The second article suggested that when all depressive subtypes are included, more than 1 in 3 of us is likely to have qualified for a depression diagnosis by our mid 30’s [2]. All these depression subtypes are associated with significant suffering as well as disturbance in work and social functioning. This is true too for the even commoner subthreshold disorders [3, 4], yet the recent National Institute for Clinical Excellence (NICE) guideline for doctors on the treatment of depression concluded that there was little current firm evidence that mild to moderate depression is responsive to antidepressant medication or specific psychological treatments. A BMJ editorial identified uncertainty about the management of mild or moderate depression as the guideline’s central weakness [5]. In this situation it makes great sense to explore whether other interventions such as non-drug, non-talking therapy methods have anything worthwhile to offer.
food:
What we eat has a major impact on how we feel. This is true in a whole series of ways. Probably most importantly it is because eating healthily reduces the chance of suffering from many very unpleasant physical illnesses, including the major killers of cancer and heart disease. Eating well also gives more energy, improves self-esteem, and is enjoyable. The UK government’s eight tips for eating well, published in October 2005, are:
1. Base your meals on starchy foods
2. Eat lots of fruit and veg
3. Eat more fish
4. Cut down on saturated fat and sugar
5. Try to eat less salt – no more than 6g a day
6. Get active and try to be a healthy weight
7. Drink plenty of water
8. Don’t skip breakfast
Happily there are many great resources on the internet to help us follow up these suggestions. One excellent starting point is the British Dietetic Association – bda. – with its section ‘latest food facts’ containing many downloadable fact sheets including information on healthy snacks, packed lunches, fruit & veg, omega-3 fatty acids, fluid intake, and whole grains. Another excellent starting point is the Scottish ‘healthyliving’ website – .uk – with lots of good advice on healthy eating including a quiz on the health of your current diet, printable recipes, tips on healthier breakfasts, packed lunches, light & main meals, and the option of free personal email or phone advice from nutrition specialists. Both sites also contain a host of further good internet links.
Nearly all good advice on eating for general physical health is equally true when eating for general psychological health. There are however some specific areas that seem particularly relevant for depression sufferers. The Mental Health Foundation – .uk – has a very useful ‘Food and Mental Health Campaign’ section including downloadable reports on ‘Feeding Minds – the impact of food on mental health’ and a link to the related, longer report from the Alliance for Better Food and Farming at .
dietary supplements:
Most of the research on diet and depression treatment has focussed on adding dietary supplements to standard antidepressants rather than relying on diet as a treatment on its own.
Of the several interesting reviews of complementary therapies that are particularly relevant for depression [6-14], the most recent retrieved was Werneke et al’s 2006 article ‘Complementary medicines in psychiatry: review of effectiveness and safety’ [6]. This paper concluded that ‘Potentially useful substances include ... St John’s wort and s-adenosylmethionine as antidepressants, and selenium and folate to complement antidepressants.’ St John’s wort is easily available in the UK and it was discussed in the second article in this series. My impression is that s-adenosylemethionine (SAMe) is not widely used in the UK, despite a recent relatively favourable systematic review[13]. There is also an encouraging paper whose summary is downloadable from the US Agency for Healthcare Research and Quality (AHRQ) at . Research on oral SAMe has tended to use 1,600 milligrams daily [15]. This makes it a fairly expensive form of treatment and there are also concerns about the quality and content of some available SAMe products [16]. SAMe does however seem well worth researching further. Possibly it is an agent that we will see more of in the future.
Werneke et al are fairly dismissive of the helpfulness of the omega-3 fatty acids (EPA & DHA) in fish oils for depression. Their approximately 50 word comment is dramatically dwarfed by the 418 page US Agency for Healthcare Research and Quality (AHRQ) systematic review ‘Effects of omega-3 fatty acids on mental health.’ which is freely downloadable from clinic/tp/o3menttp.htm . AHRQ however also highlight that much more research is needed before it becomes clear how useful the omega-3 fatty acids are. The AHRQ review covers articles published up to 2003/2004 and there have been a number of relevant further papers published since. Examples include positive findings from a small study using EPA as add-on to standard treatment for adult bipolar depression [17], from a small study using omega-3 fatty acids as pharmacological monotherapy for childhood depression [18], and from small studies suggesting low DHA level might be a risk factor for suicide attempts in depression [19] and depressive risk in cardiovascular disease [20]. There have also been a couple more reviews with tentatively positive conclusions [21, 22]. Although there are risks associated with too high a fish oil intake such as excessive intake of mercury and dioxins [23, 24], there also seem to be probable benefits for risk of heart disease [25] and possibly too dementia development [26]. The American Heart Association website provides helpful advice about fish intake and about the risk of mercury and other toxins. See presenter.jhtml?identifier=4632 . My overall impression is that supplementing the diet with about 1 gram per day of EPA is quite possibly going to help many people recover more quickly from depression. It is unclear whether it is more or less effective to take this EPA with an equivalent amount of DHA, so the jury is still out whether to take oily fish in the diet, whole concentrated fish oil supplements or supplements consisting mostly of just EPA. Of coure, the more general health benefits associated with fish intake have involved taking EPA and DHA, not just EPA.
Wernecke et al’s comments about selenium are interesting. Selenium levels tend to be low across the general UK and Scottish populations [27, 28]. Low selenium levels are associated with increased risk of a number of cancers [29, 30], viral infections, reproductive problems and other disorders [27]. There have been several small scale studies suggesting selenium supplementation might be helpful for improving mood [31-35], but a recent larger scale study throws doubt on this suggestion [36]. For general health reasons, it makes sense for people in the UK to take a dietary supplement that contains selenium. A 200 microgram supplement of selenium as selenium methionine has been used in some research trials. Care should be taken to avoid too high a selenium intake as this is toxic, but a total daily dose from all sources of up to 450 micrograms per day is probably well within safety limits [37]. At the moment though it is unclear whether or not selenium supplementation will help with mood as well as producing its better documented general health benefits.
Folic acid supplementation currently looks a better bet for helping with depression. There is a huge amount of research on folate. A Medline search using ‘folic acid’ as a keyword turned up 1,000 articles for 2005 alone. Low folic acid seems to predispose to all kinds of health problems including depression [38-40]. This seems partly to do with some people having a particular genetic vulnerability to such problems [41, 42]. Folic acid does not appear to be an adequate treatment for depression on its own (although it might reduce the risk of developing depression in the first place). Supplementation may well however improve the response to standard antidepressants and also make maintenance antidepressant treatment more effective [11, 43, 44]. Taking 400-800 micrograms of supplemental folic acid daily seems sensible as too does emphasising folate rich foods in the diet.
Further aspects of diet that have been looked at in depression include other B vitamins, chromium, zinc, tryptophan and inositol. Vitamin B6 may be useful for pre-menopausal women [45], and there is also limited evidence suggesting benefits from vitamin B12 in depression across the general population [46-48]. There is some work on a possible role for chromium supplementation – for example chromium picolinate at 600 micrograms daily – particularly for atypical depression sufferers with high carbohydrate craving [49-52]. Atypical depression is commoner in women than men and it is characterised by symptoms such as swings in mood (mood reactivity), over eating, over sleeping, and weight gain (rather than the poor sleep and loss of appetite often seen in ‘typical’ depression). A website (and book) by Dr McLeod, the originator of the treatment seems to claim more than the current fairly sparse research underpinning justifies. It is a treatment however that is interesting and worth keeping an eye on. See . There is also some very preliminary work looking at a possible role for zinc [53, 54]. Tryptophan depletion has been used for many years as an experimental inducer of depression [55] and there is a good deal of rather poor quality research suggesting taking tryptophan may be of some use as a depression treatment [56]. Finally a 2004 meta-analysis of inositol treatment for depression showed unclear results [57] but a more recent trial using inositol as an add-on treatment in bipolar depression was somewhat more encouraging [58].
As can be seen from this article so far, many non-drug, non-talking therapy treatments for depression involve dietary supplements. It has been argued by very well-informed specialists that pretty much everyone should consider taking a general dietary supplement. To quote a major scientific review on vitamin use published in the Journal of the American Medical Association : ‘Most people do not consume an optimal amount of all vitamins by diet alone. Pending strong evidence of effectiveness from randomized trials, it appears prudent for all adults to take vitamin supplements.’ [59, 60] I would add that it is probably also prudent – especially in the UK – to make sure the supplement contains other ingredients such as selenium. Depression sufferers would do well to consider taking a general multi-vitamin and multi-mineral supplement to complement the main forms of treatment they are using. This supplement should, amongst other ingredients, contain vitamins B6 and B12, at least 400 micrograms of folic acid, and – in the UK – at least 200 micrograms of selenium. Of course this is a supplement to, not a substitute for, a generally healthy diet.
acupuncture:
It is reasonable to consider acupuncture as a treatment for depression, but supportive evidence is sketchy. Reports comparing it’s effectiveness with standard antidepressants began emerging over twenty years ago [61]. This early research, however, is of poor quality and the results should be treated with caution. More modern work – for example on using acupuncture as a treatment for depression during pregnancy – has been better and more encouraging [62]. Two recent systematic reviews of acupuncture for depression are very cautious about possible benefits [63, 64]. The 2006 review identified 9 randomized controlled trials, 5 of which were classified as “of low quality”. The authors went on to state “General trends suggest that acupuncture modalities were as effective as antidepressants employed for treatment of depression in the limited studies available for comparison. However, placebo acupuncture treatment was often no different from intended verum (true) acupuncture.” The paper went on to conclude “ ... the evidence thus far is inconclusive. However ... further systematized research ... is warranted.” As a medical doctor, psychotherapist, and Chinese-trained acupuncturist with a particular interest in depression, my sense is that acupuncture may well produce its possible benefits for depression by non-specific mechanisms such as engendering hope through having a skilled therapist performing a structured time-limited treatment which acts via potentially credible mechanisms. Of course, this is also partly true for probably all depression treatments, but I still suspect that acupuncture may lack any specific treatment effect for depression. Until better research emerges, I would put acupuncture further down my list of potentially useful depression treatments than some food supplements or meditation forms, but further up the list than many other types of complementary therapy such as homoeopathy, osteopathy, or reflexology.
relaxation, hypnosis & meditation:
The use of so-called ‘altered states of consciousness’ for helping people suffering from depression is a fascinating and promising area. Although now often forgotten, early studies of simple relaxation procedures produced quite encouraging results as treatments for depression. For example, a clinical trial conducted in the 1970’s showed no significant difference between relaxation therapy and antidepressants [65]. A subsequent study published in 1990 suggested that the effects of antidepressants and relaxation are additive [66], while further research concluded that both cognitive-behavioural therapy (CBT) and relaxation training (RT) are more potent than antidepressants with no significant differences in the outcomes produced by the these two non-drug approaches [67]. I hasten to add that these research studies all only involved quite small numbers of participants and their results should be treated as tentative. However it is worth remembering that well taught relaxation procedures can be of benefit for some depression sufferers. Relaxation is easily teachable in group format by therapists who may not need very extensive training. It is noteworthy though that optimal ‘dose’ may involve at least a dozen one hour classes in addition to regular home practice [68].
Hypnosis is a related approach that could prove helpful as a treatment for depression. The psychologist Michael Yapko has been particularly active in this area. He has written books and articles – see – but there is a dearth of well controlled research back up. There is an argument that hypnosis itself is not so much a therapy as a vehicle for therapy. So hypnosis can be taught as a form of relaxation or meditation training. It can be used as a way of eliciting past trauma and aiding emotional processing. It can be used to give a variety of post-hypnotic suggestions for improvement. It can be used in an attempt to enhance success imagery, for example with phobia desensitisation or sports performance. It can also be used as a vehicle to introduce cognitive therapy interventions. Research is patchy on how helpful hypnosis is in all of these situations. It seems clear that relaxation, imagery, and encouraging suggestions can all at times be helpful. It is much less clear whether packaging these interventions as hypnosis adds any therapeutic value when working with depression sufferers. Cognitive therapy is one of the best validated treatments for depression and there is some more general evidence that hypnosis can boost the effectiveness of cognitive therapy [69-72]. With relaxation, imagery and suggestions, Alastair Dobbin, an Edinburgh GP, has been producing encouraging findings using hypnosis CD’s for primary care patients suffering from depression. The results of a pilot study comparing this approach to antidepressant treatment is available in the resources section of his professional website – hypnodoc.co.uk – and the CD’s can be bought from a linked commercial site. Larger controlled trials are clearly needed and one involving his approach is already underway. Even if better research does demonstrate that hypnosis can enhance the effectiveness of various depression treatments, it is still quite likely that a similar enhancement can be achieved with forms of relaxation, imagery and suggestion that do not involve any reference to hypnosis.
In probably the most exciting development in the use of altered states of consciousness to help with depression, a multicentre randomized controlled trial has shown that a form of meditation called mindfulness-based cognitive therapy (MBCT) reduces relapse rates in people who have suffered three or more previous episodes of depression [73]. Despite being well at the time of treatment, subjects were at clear risk of developing depression again. Learning this meditation technique in a training group reduced relapse by 40-50% over the following 60 weeks as compared with a comparison treatment-as-usual sample. More encouragingly still, these results have been replicated in a further study [74]. A fine book, giving detailed descriptions, has been published [75] and there is a very helpful website at giving explanations, access to books and a set of CD’s, and links to other useful sites.
As is so often the case, such interesting and positive findings generate a whole series of further questions. It appears that participants who had only suffered two or less previous episodes of depression were not helped by learning MBCT and may even have been harmed. Numbers were small, but for this sub-section of the MBCT trainees, relapse rates in both research studies were worse than in the treatment-as-usual comparison groups. It is well known that, as the number of depression episodes a sufferer has experienced increases, the importance of external life event triggers appears to become less important [76]. John Teasdale and his fellow researchers argued that MBCT is particularly helpful when internal ruminative thinking (rather than responding to an external life event) is a key treatment target [77]. For those who have only suffered two or less previous depressive episodes, a more externally focussed treatment might well be more relevant – for example boosting subjects’ confidence in problem-solving [78-80].
It will also be interesting and important to test how useful MBCT or related methods are for people who are currently depressed. A small exploratory study has suggested MBCT may help some people with current depression [81] and there are a whole series of psychotherapies that include mindfulness-related methods as important components of their treatment packages. Examples include Acceptance & Commitment Therapy [82], Dialectical Behavior Therapy [83] and Metacognitive Therapy [84]. Additionally, whether for the treatment of current depression or the prevention of relapse, it will be important to test MBCT against credible active alternatives such as simple applied relaxation training.
In conclusion to this section, it seems increasingly clear that ‘altered states of consciousness’ do have a role in helping depression sufferers. An important next step will be to clarify more precisely how these approaches actually produce their benefits. I currently find it helpful to think of four overlapping mechanisms – reducing negative mind-body states, increasing positive mind-body states, encouraging mindfulness, and eliciting and processing emotions. Reduction of negative mind-body states typically involves relaxation and imagery to ease muscle tension, settle autonomic nervous system over-activation, reduce stress hormone levels, and calm thinking. I have already mentioned three studies that have explored relaxation treatment of depression. Herbert Benson’s 1970’s book ‘The Relaxation Response’ was a standard bearer for this reduction of negative overactivated states approach and Ost’s applied relaxation studies extended these ideas further [85, 86]. Biofeedback training too is often conceptualized as targetting ‘negative states’ such as excessive muscle tension. A second mechanism is promotion of positive mind-body states. Barbara Fredrickson’s broaden-and-build theory of positive emotions is central here – see . Positive states like contentment, curiosity, appreciation and friendliness can act as springboards for improved problem-solving, memory, exploration, confidence and relationship building. Imagery interventions promoting positive mind states can improve performance for psychological difficulties [87], sport [88] and more general achievement [89]. Recent research interest in compassionate mind training (CMT) can also be classified as positive state promotion. CMT has been used successfully in the treatment of anger and chronic pain [90]. The place of compassion – particularly self-compassion – is also being explored for general psychological resilience [91], and in helping depression sufferers reduce toxic levels of self-criticism [92]. The whole positive psychology movement is orientated towards this kind of strength building with a series of developing research areas such as the health benefits of enhancing forgiveness and gratitude [93].
The third of these proposed overlapping mechanisms can variously be described as mindfulness, or disentangling from unhelpful mind-body states, or metacognitive ability, or attention refocusing. It is a particularly active research area at the moment [94]. It will be important to clarify what is meant by some of these traditional terms – for example there are already at least five different scales that have been developed to assess mindfulness [95] – and to explore more thoroughly how mindfulness is helpful [96]. It is however an exciting approach for easing suffering with many potential applications including depression.
The fourth of these proposed overlapping therapeutic mechanisms is eliciting and processing emotions. Emotion-focused therapies that move easily in and out of working in the present and past have been increasingly demonstrated to be helpful for depression [97, 98]. Eliciting and processing past traumas seems an important area to develop for many depression sufferers [99, 100] with helpful lessons to be learned from effective treatments for post-traumatic stress disorder [101]. Typically this emotion processing mechanism is part of various ‘talking therapies’, but it can also be tapped into using self-help methods such as focusing or therapeutic writing. See for example the Focusing Institute at or Jamie Pennebaker’s website at .
Relaxation, hypnosis and meditation are promising areas to consider when exploring how best to help depression problems. There seem to be a number of therapeutic mechanisms involved when using these techniques. Often these interventions will be part of more general ‘talking therapies’, but they can also be used as self-help methods in their own right. Much further research is needed to clarify how helpful these approaches are for whom, with what aspects of depression, and via what methods of learning and delivery.
other approaches:
At present there seems to be very little research evidence supporting the use of other complementary therapies as treatments for depression. Certain individuals with depression may find that they benefit from therapies such as homoeopathy, massage, manipulation, reflexology, Bach flower remedies, and so on. Currently, however, there is no good reason for recommending any of these practices as general treatments for depression sufferers.
There is, however, growing evidence to support the use of self-help books [102], computerized cognitive therapy [103], and the internet [104-106]. Although there are dangers from access to inaccurate or misleading information [107], it seems likely that computers and the internet may become major players in encouraging greater access to well-validated depression treatments. This may involve education, screening, support groups and computerized versions of well-validated talking therapies. These important developments are outside the remit of this current series of articles.
conclusion:
Recent research suggests that about 27% of European adults will suffer from a formally diagnosable mental disorder in any one year, but only about a quarter have any consultation with professional health services [108]. Better education and identification of depression are crucially important. Improved treatment options too would be hugely useful. Currently the two major types of treatment for depression are drugs and talking therapies. There are major problems, however, with the availability and effectiveness of these interventions. This series of three articles on non-drug, non-talking therapy treatments for depression has looked at physical exercise, ‘wake’ therapy, light, herbs, food, dietary supplements, acupuncture, relaxation, hypnosis and meditation. The good news is that there are very clearly benefits to be gained from incorporating some of these approaches into the treatment responses we consider for depression. It is also good news that many of these alternatives to drugs and psychotherapy – for example approaches involving exercise and diet – can be easier to access and may prove less stigmatizing, more acceptable, and of more general health benefit.
a note for depression sufferers:
Information in this article is not a substitute for seeking expert help. If you feel you may be depressed, please see your family doctor or other qualified health professional. You can always show them this article and discuss these treatments with them.
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