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What Does the ‘Best Evidence’ Say About Antidepressants?

Analysis by Dr. Joseph Mercola Fact Checked , 28 juillet 2022

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In June 2022, 22.4% of American adults reported symptoms of depression, compared to 7.1% in 2017. When the numbers were broken down in April 2022, half of young adults ages 18 to 24 reported feeling depressed; 22% ages 45 to 64 had depression symptoms; 9% of people age 65 or over reported feeling depressed
Antidepressant drugs — the most widely used therapy for depression — are also among the least effective, and often make the situation worse, especially in the long term
Studies have repeatedly shown antidepressants work no better than placebo for mild to moderate depression
A 2017 systematic review of 131 placebo-controlled studies found that “all trials were at high risk of bias” and that clinical significance was questionable
Antidepressants are neurotoxic and possible side effects include worsening depression, self-harm, violence and suicide, increased risk for diabetes, heart disease, heart attack, stroke and dementia, and depletion of various nutrients (depending on the type of drug you take)

This article was previously published April 4, 2019, and has been updated with new information.

In June 2022, 22.4% of American adults reported symptoms of depression, compared to 7.1% in 2017.¹ When the numbers were broken down in April 2022, half of young adults ages 18 to 24 reported feeling depressed; 22% ages 45 to 64 had depression symptoms; 9% of people age 65 or over reported feeling depressed.² While the rapid rise in depression has been attributed to the COVID-19 pandemic, the symptoms of depression have not changed.

Depression can interfere with personal and work relationships, reduce work or academic performance and affect physical health by impairing your ability to properly care for yourself and make good health decisions, including decisions about nutrition and sleep. Imbalances in nutrition, weight fluctuations and poor sleep habits may in turn compromise your immune function.³

The condition can also be lethal, as depression is a contributing factor in up to 70% of all suicides.⁴ In 2016, 44,965 Americans committed suicide.⁵ In 2020, 45,959 Americans died by suicide.⁶ Depression can also lead to self-harming behaviors such as drug or alcohol abuse,⁷ and 90% of people who struggle with suicidal thoughts experience a combination of depression and substance abuse.⁸

Unfortunately, antidepressant drugs — the most widely used therapy for depression — are also among the least effective. In fact, statistics suggest that far from being helpful, psychiatric drugs are making the situation worse.

According to research^9,¹⁰ published in February 2017, 16.7% of the 242 million U.S. adults (aged 18 to 85) included in the survey reported filling at least one prescription for a psychiatric drug in 2013.

Twelve percent reported using an antidepressant; 8.3% used anxiolytics, sedatives and hypnotics; and 1.6% used antipsychotics. With nearly 17% of the adult population in the U.S. taking psychiatric drugs, it would be prudent to evaluate the larger ramifications of these types of medications.

In 2022, more than 24% of Americans (about 50 million) are taking a prescription mental health drug.¹¹ And, while prescription rates for antidepressants and anxiolytics increased early during pandemic in 2020, they decreased near the end of that year, with researchers speculating that the decrease may have been due to fewer in-person doctor visits.¹²

Sadly, no matter what the prescription numbers are, statistics overwhelmingly fail to support the use of these drugs, yet they continue to be the leading form of treatment.

Medication Madness — A Psychiatrist Speaks Out

In a segment of Full Measure (above), award-winning investigative journalist Sharyl Attkisson interviewed psychiatrist and director of the International Center for Patient-Oriented Psychiatry, Dr. Peter Breggin. He is known to many as "the conscience of psychiatry," as he was instrumental in preventing the return of lobotomy as a psychiatric treatment in the early 1970s.

Breggin is also the author of "Medication Madness," in which he details the many hazards of psychiatric drugs. In his 50 years of practice, he has never placed a patient on drugs. In fact, he specializes in getting people off them, and wrote a book on psychiatric drug withdrawal, "Psychiatric Drug Withdrawal: A Guide for Prescribers, Therapists, Patients and Their Families."¹³

When asked what he thinks people don't know about psychiatric treatment, and ought to, Breggin responds, "They don't know that all psychiatric drugs are neurotoxins. They don't know that they aren't correcting biochemical imbalances, they are causing biochemical imbalances."

Prozac was the first selective serotonin reuptake inhibitor (SSRI), approved by the U.S. Food and Drug Administration (FDA) in 1987.¹⁴ Over the years, Prozac became the target of a number of lawsuits, as patients suffered all sorts of ill effects, from birth defects to suicide and serotonin syndrome, a condition caused by excess serotonin in the brain, leading to agitation, confusion, high blood pressure and more.¹⁵

Already by 1996, 35,000 complaints about the drug had been lodged with the FDA.¹⁶ In the early 1990s, Breggin was appointed by a federal court as the medical and scientific expert for the plaintiffs in all combined lawsuits facing Eli Lilly with regard to Prozac, a role that gave him access to corporate records.¹⁷ Breggin tells Attkisson:¹⁸

"Prozac … had amphetamine affects. The chief investigators said and wrote, 'this drug has amphetamine like effects. We need to put this into the label. It can make depression worse, can make people agitated, make them angry, might increase the suicide rate,' but the FDA wouldn't allow onto the label what it's chief investigator into adverse effects was telling them.

So, from the beginning, it was all a house of cards. And, as for it's being useful, I looked it over, carefully analyzed the statistics and said the drug actually doesn't work. It's about as good as placebo.

Now, placebo will help anywhere between 40% and 80% of people, so it's a huge effect and that especially with depression, because depression is not about a biochemical imbalance. It's about hopelessness. Depression is part of the human experience."

In Breggin's view, "There is no promising medical treatment and probably there never can be," for the simple reason that depression is primarily rooted in the complexity of human emotions and experiences. He believes one needs to avoid numbing and escapist behaviors such as drug and alcohol use, and implement strategies to support healthy brain function instead, in order to "be able to deal with your issues."

Contrary to Popular Opinion, Antidepressants Don't Work

Download Interview Transcript

In 2010, I interviewed medical journalist and Pulitzer Prize nominee Robert Whitaker about the use of psychiatric drugs, as he has written two books on this topic. I've included that interview here for your convenience. In it, Whitaker details the science showing antidepressants don't work — and what actually does.

The available science has also brought Jacob Stegenga, a philosophy of science lecturer at the University of Cambridge and author of "Medical Nihilism," to the same conclusion. In a recent essay, he notes:¹⁹

"Diving into the details of how antidepressant data are generated, analyzed and reported tells us that these drugs are barely effective, if at all … The best evidence about the effectiveness of antidepressants comes from randomized trials and meta-analyses of these trials.

The vast majority of these studies are funded and controlled by the manufacturers of antidepressants, which is an obvious conflict of interest. These trials often last only weeks — far less than the duration that most people are on antidepressants.

The subjects in these trials are selected carefully, typically excluding patients who are elderly, who have other diseases, or who are on several other drugs — in other words, the very kinds of people who are often prescribed antidepressants — which means that extrapolating the evidence from these trials to real patients is unreliable.

The trials that generate evidence seeming to support antidepressants get published, while trials that generate evidence suggesting that antidepressants are ineffective often remain unpublished …

To give one prominent example, in 2012 the U.K. pharmaceutical company GlaxoSmithKline pleaded guilty to criminal charges for promoting the use of its antidepressant Paxil in children (there was no evidence that it was effective in children), and for misreporting trial data … When analyzed properly, the best evidence indicates that antidepressants are not clinically beneficial."

What Does the 'Best Evidence' Say About Antidepressants?

While some psychiatric drugs may be helpful for a small minority of people with very severe mental health problems, such as schizophrenia, it's quite clear that a vast majority of people using these drugs do not suffer from the type of psychiatric illnesses that might warrant their prudent use.

Most are struggling with sadness, grief, anxiety, "the blues" and depression, which are in many ways part of your body's communication system, revealing nutritional or sunlight deficiencies and/or spiritual disconnect, for example.

The underlying reasons for these kinds of troubles are manifold, but you can be sure that, whatever the cause, an antidepressant will not correct it. In fact, as noted by Breggin, studies^20,^21,²² have repeatedly shown antidepressants work no better than placebo for mild to moderate depression.

Irving Kirsch, associate director of the Program in Placebo Studies at Harvard Medical School, has conducted several meta-analyses of antidepressants in comparison to placebo, concluding there's virtually no difference in their effectiveness. According to Kirsch, "The difference is so small, it's not of any clinical importance."²³ For example:

In a 1998 meta-analysis²⁴ that looked at 19 double-blind studies, Kirsch and colleagues noted that:

"These data indicate that virtually all of the variation in drug effect size was due to the placebo characteristics of the studies.

The effect size for active medications that are not regarded to be antidepressants was as large as that for those classified as antidepressants, and in both cases, the inactive placebos produced improvement that was 75% of the effect of the active drug. These data raise the possibility that the apparent drug effect (25% of the drug response) is actually an active placebo effect."

Research published in 2008 found major discrepancies between published and unpublished research makes antidepressants appear far more beneficial and effective than the sum total of the research actually reveals them to be. Of 74 FDA-registered studies, 31% were never published.

As noted by the authors, "According to the published literature, it appeared that 94% of the trials conducted were positive. By contrast, the FDA analysis showed that 51% were positive … Selective reporting of clinical trial results may have adverse consequences for researchers, study participants, health care professionals and patients."

A 2010 meta-analysis²⁵ concluded that "The magnitude of benefit of antidepressant medication compared with placebo increases with severity of depression symptoms and may be minimal or nonexistent, on average, in patients with mild or moderate symptoms."

In a 2011 paper,²⁶ Kirsch notes that six-week trials have a higher success rate than eight-week trials — 55 versus 42% — which suggests long-term use of antidepressants is likely ineffective.

In a 2014 paper,²⁷ Kirsch notes that "analyses of the published data and the unpublished data that were hidden by drug companies reveals that most (if not all) of the benefits are due to the placebo effect." In this paper, he notes that two of his earlier meta-analyses^28,²⁹ actually revealed that when both published and unpublished trials were included, the placebo response accounted for a whopping 82% of the beneficial response to antidepressants.

A major benefit of evaluating FDA trial data was that all of the trials used the same primary measure of depression, which made the drug-to-placebo effects very easy to identify and compare. The primary measure of depression used in these studies was the Hamilton depression scale, a 17-item scale with a possible score of 0 to 53 points.

The higher your score, the more severe your depression. Importantly, the mean difference between antidepressants and placebo was less than 2 points (1.8) on this scale. To illustrate just how insignificant of a difference this is, you can score a 6-point difference simply by changing sleep patterns without any reported change in other depressive symptoms.

Simply fidgeting less results in a 4-point decrease in your depression score, so as noted by Stegenga in his essay,³⁰ "a drug that simply made people sleep better and fidget less could lower one's depression score by 10 points."

What's more, clinical guidelines in the U.K. require antidepressants to lower depression scores by a mere 3 points,³¹ and this too reveals why and how the benefits of antidepressants have been overestimated and oversold.

Most recently, a 2017 systematic review with meta-analysis and trial sequential analysis of 131 placebo-controlled studies found that "all trials were at high risk of bias and the clinical significance seems questionable. SSRIs significantly increase the risk of both serious and non-serious adverse events. The potential small beneficial effects seem to be outweighed by harmful effects."

None of the trials, even when reporting a positive result, met the threshold for clinical significance of 3 points on the depression score.

Long-Term, Antidepressant Users Fare Much Worse

What's more, research has shown that patients who do not take antidepressants fare better in the long term compared to those taking drugs,³² and research³³ comparing exercise and drug treatment for depression suggests those not taking drugs have a lower risk of relapse. This risk is also addressed in Kirsch's 2014 paper³⁴ on antidepressants and the placebo effect.

"The serotonin theory is as close as any theory in the history of science to having been proved wrong. Instead of curing depression, popular antidepressants may induce a biological vulnerability making people more likely to become depressed in the future," Kirsch writes.

Known Side Effects of Antidepressants

In addition to not working better than placebo, antidepressants also come with a long list of potential side effects, which include but are not limited to:^35,³⁶

Worsening depression

Self-harm, violence and suicide

Increased risk of developing Type 2 diabetes,³⁷ even after adjusting for risk factors such as body mass index³⁸

Thickening of the greater carotid intima-media (the lining of the main arteries in your neck that feed blood to your brain),³⁹ which could contribute to the risk of heart disease and stroke. This was true both for SSRIs and antidepressants that affect other brain chemicals

An increased risk of heart attack, specifically for users of tricyclic antidepressants, who have a 36% increased risk of heart attack⁴⁰

An increased risk of dementia; as the dose increases, so does the risk for dementia⁴¹

Depletion of various nutrients, including coenzyme Q10 and vitamin B12 — in the case of tricyclic antidepressants — which are needed for proper mitochondrial function. SSRIs have been linked to iodine and folate depletion⁴²

Depression Treatments That Actually Work

If you're at all interested in following science-based recommendations, you'd place antidepressants at the very bottom of your list of treatment candidates. Far more effective treatments for depression include:

Exercise — A number of studies have shown exercise outperforms drug treatment. Exercise helps create new GABA-producing neurons that help induce a natural state of calm, and boosts serotonin, dopamine and norepinephrine, which helps buffer the effects of stress.

Studies have shown there is a strong correlation between improved mood and aerobic capacity, but even gentle forms of exercise can be effective. Yoga, for example, has received particular attention in a number of studies. One study found 90-minute yoga sessions three times a week reduced symptoms of major depression by at least 50%.⁴³

Nutritional intervention — Keeping inflammation in check is an important part of any effective treatment plan. If you're gluten sensitive, you will need to remove all gluten from your diet. A food sensitivity test can help ascertain this. Reducing lectins may also be a good idea.

As a general guideline, eating a whole food diet as described in my optimal nutrition plan can go a long way toward lowering your inflammation level. A cornerstone of a healthy diet is limiting sugar of all kinds, ideally to no more than 25 grams a day.

In one study,⁴⁴ men consuming more than 67 grams of sugar per day were 23% more likely to develop anxiety or depression over the course of five years than those whose sugar consumption was less than 40 grams per day. Certain nutritional deficiencies are also notorious contributors to depression, especially:

Marine-based omega-3 fats — Omega-3 fats have been shown to improve major depressive disorder,⁴⁵ so make sure you're getting enough omega-3s in your diet, either from wild Alaskan salmon, sardines, herring, mackerel and anchovies, or a high-quality supplement. I recommend getting an omega-3 index test to make sure you're getting enough. Ideally, you want your omega-3 index to be 8% or higher.
B vitamins (including B1, B2, B3, B6, B9 and B12) — Low dietary folate can raise your risk by as much as 300%.^46,⁴⁷ One of the most recent studies^48,⁴⁹ showing the importance of vitamin deficiencies in depression involved suicidal teens. Most turned out to be deficient in cerebral folate and all of them showed improvement after treatment with folinic acid.
Magnesium — Magnesium supplements led to improvements in mild-to-moderate depression in adults, with beneficial effects occurring within two weeks of treatment.⁵⁰

Vitamin D — Studies have shown vitamin D deficiency can predispose you to depression and that depression can respond favorably to optimizing your vitamin D stores, ideally by getting sensible sun exposure.^51,⁵² In one study,⁵³ people with a vitamin D level below 20 nanograms per milliliter (ng/mL) had an 85% increased risk of depression compared to those with a level greater than 30 ng/mL.

A double-blind randomized trial⁵⁴ published in 2008 concluded that supplementing with high doses of vitamin D "seems to ameliorate [depression] symptoms indicating a possible causal relationship." Recent research⁵⁵ also claims that low vitamin D levels appear to be associated with suicide attempts. For optimal health, make sure your vitamin D level is between 60 and 80 ng/mL year-round. Ideally, get a vitamin D test at least twice a year to monitor your level.

Light therapy — Light therapy alone and placebo were both more effective than Prozac for the treatment of moderate to severe depression in an eight-weeklong study.⁵⁶ Spending time outdoors in broad daylight is the least expensive and likely most effective option.

Probiotics — Keeping your gut microbiome healthy also has a significant effect on your moods, emotions and brain.

Emotional Freedom Techniques (EFT) — EFT is a form of psychological acupressure that has been shown to be quite effective for depression and anxiety.^57,^58,^59,⁶⁰ For serious or complex issues, seek out a qualified health care professional who is trained in EFT to guide you through the process.

That said, for most of you with depression symptoms, this is a technique you can learn to do effectively on your own. In the video below, EFT practitioner Julie Schiffman shows you how.

Other Helpful Treatment Strategies

Here are several additional strategies that can help improve your mental health:

Minimize electromagnetic field (EMF) exposure — In 2016, Martin Pall, Ph.D., published a review⁶¹ in the Journal of Neuroanatomy showing how microwave radiation from cellphones, Wi-Fi routers and computers and tablets not in airplane mode is clearly associated with many neuropsychiatric disorders.

These electromagnetic fields (EMFs) increase intracellular calcium and trigger the production of extremely damaging free radicals by acting on your voltage gated calcium channels (VGCCs), and the tissue with the highest density of VGCCs is your brain.

Once these VGCCs are stimulated they also cause the release of neurotransmitters and neuroendocrine hormones, which contribute not only to anxiety and depression but also neurodegenerative diseases like Alzheimer's.

So, if you struggle with anxiety or depression, be sure to limit your exposure to wireless technology. Simple measures include turning your Wi-Fi off at night, not carrying your cellphone on your body unless it's in airplane mode, and not keeping portable phones, cellphones and other electric devices in your bedroom.

Clean up your sleep hygiene — Make sure you're getting enough high quality sleep, as sleep is essential for optimal mood and mental health. The inability to fall asleep and stay asleep can be due to elevated cortisol levels, so if you have trouble sleeping, you may want to get your saliva cortisol level tested with an Adrenal Stress Index test.

Adaptogens, herbal products that help lower cortisol and adjust your body to stress, can be helpful if your cortisol is running high. There are also other excellent herbs and amino acids that help you to fall asleep and stay asleep.

Optimize your gut health — A number of studies have confirmed gastrointestinal inflammation can play a critical role in the development of depression.⁶² Optimizing your gut microbiome will also help regulate a number of neurotransmitters and mood-related hormones, including GABA and corticosterone, resulting in reduced anxiety and depression-related behavior.⁶³

To nourish your gut microbiome, be sure to eat plenty of fresh vegetables and traditionally fermented foods such as fermented vegetables, lassi, kefir and natto. If you do not eat fermented foods on a regular basis, taking a high-quality probiotic supplement is recommended. Also remember to severely limit sugars and grains, to rebalance your gut flora.

Visualization — Visualization and guided imagery have been used for decades by elite athletes before an event, successful business people and cancer patients — all to achieve better results through convincing your mind you have already achieved successful results.^64,⁶⁵ Similar success has been found in people with depression.⁶⁶

Cognitive behavioral therapy (CBT) — CBT has been used successfully to treat depression.^67,⁶⁸ This therapy assumes mood is related to the pattern of thought. CBT attempts to change mood and reverse depression by directing your thought patterns.

Make sure your cholesterol levels aren't too low for optimal mental health — You may also want to check your cholesterol to make sure it's not too low. Low cholesterol is linked to dramatically increased rates of suicide, as well as aggression toward others.⁶⁹

This increased expression of violence toward self and others may be due to the fact that low membrane cholesterol decreases the number of serotonin receptors in the brain, which are approximately 30% cholesterol by weight.

Lower serum cholesterol concentrations therefore may contribute to decreasing brain serotonin, which not only contributes to suicidal-associated depression, but prevents the suppression of aggressive behavior and violence toward self and others.

Ecotherapy — Studies have confirmed the therapeutic effects of spending time in nature. Ecotherapy has been shown to lower stress, improve mood and significantly reduce symptoms of depression.⁷⁰ Outdoor activities could be just about anything, from walking a nature trail to gardening, or simply taking your exercise outdoors.

Breathing exercises — Breath work such as the Buteyko breathing technique also has enormous psychological benefits and can quickly reduce anxiety by increasing the partial pressure of carbon dioxide in your body.

Helpful supplements — A number of herbs and supplements can be used in lieu of drugs to reduce symptoms of anxiety and depression. These include:

St. John's Wort (Hypericum perforatum) — This medicinal plant has a long historical use for depression, and is thought to work similarly to antidepressants, raising brain chemicals associated with mood such as serotonin, dopamine and noradrenaline.⁷¹ However, never mix St. John's Wort with prescription antidepressants as it can cause dangerously high levels of serotonin.⁷²
S-Adenosyl methionine (SAMe) — SAMe is an amino acid derivative that occurs naturally in all cells. It plays a role in many biological reactions by transferring its methyl group to DNA, proteins, phospholipids and biogenic amines. Several scientific studies indicate that SAMe may be useful in the treatment of depression.
5-Hydroxytryptophan (5-HTP) — 5-HTP is another natural alternative to traditional antidepressants. When your body sets about manufacturing serotonin, it first makes 5-HTP. Taking 5-HTP as a supplement may raise serotonin levels. Evidence suggests 5-HTP outperforms a placebo when it comes to alleviating depression,⁷³ which is more than can be said about antidepressants.
XingPiJieYu — This Chinese herb, available from doctors of traditional Chinese medicine, has been found to reduce the effects of "chronic and unpredictable stress," thereby lowering your risk of depression.⁷⁴

Guidelines for Safe Drug Withdrawal

If you're currently on an antidepressant and want to get off it, ideally, you'll want to have the cooperation of your prescribing physician. It would also be wise to do some homework on how to best proceed.

Breggin's book, "Psychiatric Drug Withdrawal: A Guide for Prescribers, Therapists, Patients and Their Families,"⁷⁵ and/or "The Antidepressant Solution: A Step-by-Step Guide to Overcoming Antidepressant Withdrawal, Dependence, and Addiction"⁷⁶ by Dr. Joseph Glenmullen can be helpful.

You can also turn to an organization with a referral list of doctors who practice more biologically or naturally, such as the American College for Advancement in Medicine at www.acam.org. A holistic psychiatrist will have a number of treatment options in their tool box that conventional doctors do not, and will typically be familiar with nutritional supplementation.

Once you have the cooperation of your prescribing physician, start lowering the dosage of the medication you're taking. There are protocols for gradually reducing the dose that your doctor should be well aware of. At the same time, it may be wise to add in a multivitamin and/or other nutritional supplements or herbs. Again, your best bet would be to work with a holistic psychiatrist who is well-versed in the use of nutritional support.

If you have a friend or family member who struggles with depression, perhaps one of the most helpful things you can do is to help guide them toward healthier eating and lifestyle habits, as making changes can be particularly difficult when you're feeling blue — or worse, suicidal.

Encourage them to unplug and meet you outside for walks. We should not underestimate the power of human connection, and the power of connection with nature. Both, I believe, are essential for mental health and emotional stability.

If you are feeling desperate or have any thoughts of suicide, please call the National Suicide Prevention Lifeline, a toll-free number: 1-800-273-TALK (8255), or call the new, federal suicide and crisis hotline at 988.⁷⁷ Or, simply go to your nearest hospital emergency department. You cannot make long-term plans for lifestyle changes when you are in the middle of a crisis.

Rechercher dans ce blog

etouffoir

Les problèmes de dépression expliqués par Dr Mercola

What Does the ‘Best Evidence’ Say About Antidepressants?

Story at-a-glance

Medication Madness — A Psychiatrist Speaks Out

Contrary to Popular Opinion, Antidepressants Don't Work

What Does the 'Best Evidence' Say About Antidepressants?

Long-Term, Antidepressant Users Fare Much Worse

Known Side Effects of Antidepressants

Depression Treatments That Actually Work

Other Helpful Treatment Strategies

Guidelines for Safe Drug Withdrawal

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