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Judith J. Wurtman, PhD

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The Depressing Consequences Of Antidepressants

Posted: 07/07/11 09:28 AM ET

I recently saw a television advertisement for a weight loss program that showed a woman changing her shape from obese to skinny while taking the advertised product. As she stepped on the scale over a period of time, her expression changed from desperate to joyous as the scale registered her amazing weight loss.

Perhaps television advertisements for antidepressants should use the same pictures except run them in the opposite direction. The first picture would have a skinny woman stepping on the scale, looking happy, and the last picture -- the same woman, now obese -- looking horrified at the numbers on the scale.

As with the weight loss shown in the advertisement, weight gain associated with the use of some antidepressants, mood stabilizers and other drugs prescribed for mood disorders does not occur overnight. The process may be gradual and perceived initially as an unwelcome change in appetite. Often people who do gain weight on these drugs never had a problem with overeating, food cravings, portion control and unhealthy food choices until they started on their medication. After several weeks, though, they notice they are no longer feeling satisfied after a meal that would have contented them pre-medication. Snack foods that had no appeal before treatment are now irresistible. Late nights become a battleground between willpower and cravings, and willpower usually loses.

Adding to this unhappy mix of factors causing an inevitable weight gain is the inability to exercise at pre-treatment levels. An email I received recently from someone who gained more than 60 pounds on his medication attributed some of the weight gain to his inability to exercise. "I stopped going to the gym," he said, "I just feel too lethargic and tired to exercise."

Weight gain as a side effect of some antidepressants has been known since the 1960s and, despite the proliferation of new drugs over the past 20 years, it has not gone away.1 Not everyone experiences it, but for those who do the weight gain can range from trivial to heartbreaking.

No one has yet identified how these medications change the appetite, and perhaps even levels of physical activity and metabolism, to cause weight gain. It has been suggested that some of the antidepressants may act on other chemicals in the brain, called neurotransmitters, known to increase hunger. Animal studies have also found that one drug, used for severe mood disorders, might possibly block the ability of serotonin to shut off eating. But of course, even if and when we understand how these drugs cause overeating, the problem of what to do about it still remains.

Fortunately, the type of overeating caused by the medications gives us a hint of what might be taking place in the brain. Most people complain of a need to eat more carbohydrates and of an inability to feel satiated or satisfied after eating a meal. This combination of symptoms, such as carbohydrate craving and absence of satiety, point to a problem with serotonin. In addition to regulating mood, serotonin, acting on other cells in the brain, monitors our eating. Serotonin does not make us start to eat but rather turns off our eating by making us feel that we have eaten enough. The feeling of satiety or satisfaction is similar to what we feel when we have had enough liquid to drink. No matter how thirsty we may have been when we started to drink, once the body receives enough water, it is very hard to continue drinking. Serotonin makes us disinterested in eating even if the food is tempting.

Antidepressants, mood stabilizers and related medications sometimes seem to interfere with this effect. Instead of feeling content and disinterested in further eating, an individual thinks, "I feel full, but I still want to eat something," or, "Those leftovers aren't going to be left over very long because I have an urge to snack." In worst case situations, some medications leave an individual so unsatisfied another dinner may be eaten an hour or so after the first, or the person will wake up in the middle of the night feeling ravenous.

It is easy to see how adding on calories from larger portions, frequent snacks or two rather than one supper each night causes weight gain. It won't happen overnight, but like the advertisement for weight loss run backward, over weeks or a few months the body can be transformed into an unrecognizable, overweight shape.

Typical weight loss methods are irrelevant for this type of weight gain. Obesity experts promote nutritional education, calorie labeling for fast foods, increasing consumption of fruits and vegetables and strategies to prevent stress-related overeating. These wise and workable methods are fine for someone who gains weight the traditional way. But some people gaining weight because they are on Zoloft, Depakote or any other medication for mood disorder know how to eat healthily and would be doing so if they were not on their meds. 2 Their brains' control over eating has been damaged, and an admonition to eat more greens is not going to change that.

Restoring the ability of the brain to control appetite is the only strategy that will work, and this means restoring serotonin's appetite-controlling function.

We discovered somewhat by accident that increasing serotonin in the brain brought about this effect. The pesky, and sometimes almost frightening, need to eat brought about by antidepressant use goes away when serotonin is made. Dieters whose weight gain was caused by a mixture of medications (antidepressants, mood stabilizers and anti-anxiety drugs) were able to stop gaining and start losing weight when they increased serotonin levels prior to meals. Patients who came to TRIAD, the weight management center I ran at Harvard University, were told to eat a specific amount of carbohydrate an hour or so prior to meals, and also as a snack. The carbohydrate, eaten on an empty stomach and with little or no protein or fat, stimulated the production of serotonin. Less than one hour after eating the carbohydrate, new serotonin was made and it decreased the nagging need to eat. Our patients reported feeling content, and often for the first time in weeks the constant need to put food in their mouths was gone. They lost weight because they gained control over their eating.

Eating carbohydrates to make serotonin may seem like too simple a solution to antidepressant weight gain. Moreover, given the belief that carbohydrates are a "fattening" food, perhaps a hard solution to accept. But healthy, fat-free or very low-fat carbohydrates (e.g., pretzels, rice cakes, or even marshmallows) are a potent tool to fight the weight-gaining potential of antidepressants, and you and your scale will benefit.

  1. Hardman JG, Limbird LE, Gilman AG. Goodman & Gilman's The Pharmacological Basis of Therapeutics. 10th ed. New York: McGraw-Hill, 2001. ISBN 0-07-135469-7.
  2. Hardman JG, Limbird LE, Gilman AG. Goodman & Gilman's The Pharmacological Basis of Therapeutics. 10th ed. New York: McGraw-Hill, 2001. ISBN 0-07-135469-7.

 

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I recently saw a television advertisement for a weight loss program that showed a woman changing her shape from obese to skinny while taking the advertised product. As she stepped on the scale over a ...
I recently saw a television advertisement for a weight loss program that showed a woman changing her shape from obese to skinny while taking the advertised product. As she stepped on the scale over a ...
 
 
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08:48 AM on 07/11/2011
A very insightful article and a converstation that should be initiated to patients once they go on these meds. If these patients are at risk to gain weight, which only spirals into more depression, then this subject should be front and center so they can make the right choices in how to recognize the triggers. Overeating remains a complicated, multi-dimensional behavior. I am glad a PhD touched on this.
www.happierthanabillionaire.com
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emily tripp
Names have been changed to protect the innocent
08:42 AM on 07/10/2011
Just a couple of years ago, I read an article in Time Magazine about what seemed at the time to be a breakthrough in understanding overeating as connected to brain function. It referred to the MESOLIMBIC, which is the reward region of the brain which proceses pleasurable feelings. They found that in some obese people (which, I found out, doesn't necessarily have to mean you weigh 300 pounds, but rather have a BMI over 30) - just as in the brains of drug addicts - there is a general deficit of activity in this region. As a result, compulsive overeating may be an attempt to compensate for this deficit.
I've never heard anything more about this. Anyone?
03:27 PM on 07/17/2011
It is hard to do know exactly what is happening in the brain in people, but you are right about pleasure centers which may be activated by eating. In fact there have been attempts, so far unsuccessful, to remove the pleasure we get from eating as a method of weight reduction. And recently some studies have suggested that eating fat-rich foods may activate some area in the brain, giving us the pleasure we feel when we eat fried chicken, or potato chips or a croissant.

Even though we see this pleasure as leading to obesity, it makes sense for us to get pleasure from fat. When we were evolving, and food was of course scarce, especially fat, seeking it out may have made the difference beween survival and death when food was scarce. Fat is more calorie dense than protein or carbohydrates so if our ancestors could eat a nice chunk of deer or rabbit fat, those calories might have allowed him/her to survive another day. Of course these days eating a lot of fat has the opposite effect of decreasing our survival rate because of its effect on our cardio vascular health.
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emily tripp
Names have been changed to protect the innocent
08:16 AM on 07/10/2011
(I apologize if this was already addressed)
I thought many anti-depressants already worked on the premise of Serotonin.?
03:44 PM on 07/10/2011
Yes you are right.

Antidepressants work on the brain chemical or neurotransmitter serotonin, and some also affect norepeniphrine. But serotonin has several functions in the brain beyond regulating mood. Serotonin also attaches itself to specific sites on brain cells involved in food intake, and other sites involved in pain perception. In its role in regulating eating, we and others discovered that serotonin turns off appetite. It causes satiety, or a feeling of satisfaction that enough food has been eaten.

Some research has found that certain drugs used for mood disorders block the sites on these brain cells so serotonin can't attach and turn off eating. Other research has found that antidepressants increase the activity of other brain chemicals like histamine which increase hunger. We still don't know what exactly is going on. But we found that if we could pump up serotonin's ability to increase satiety by a diet that increased the level of serotonin in the brain, people lost their appetite and lost weight.
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emily tripp
Names have been changed to protect the innocent
12:02 AM on 07/11/2011
I very much appreciate your reply. But I have to say that being sated by eating something before a meal sounds an awful lot like what Mother warned us of as kids: :You're gonna spoil your apetite!"
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Imago1122
Without a hurt, the heart is hollow...
05:10 PM on 07/09/2011
This article definitely echoed my experience with antidepressants. While I had always had a healthy appetite, I'd been easily able to keep it domesticated so to speak and my figure trim, with allowances for occasional, sinful, guilt-free indulgences here and there. Antidepressants in my early twenties changed this for me. I was continually ravenous. My physique became unrecognizable to me, my face full and flushed as a ham. I'd become a zombie on all existential dimensions.

Thank goodness I've finally escaped this web. Meditation, memories of productive talk therapy with a now retired shrink, yoga and long walks with the dogs have brought me back great measures of equilibrium in both mind and body. The antidepressants are gone. Life is always going to be an ebb and flow, and from time to time I still do experience flare ups of ravenous mad-dog eating, remnants and anxieties from old days, but I am able to reel the blackouts in now before they get out of hand. I'm still gaining psychological poise everyday and know that perspective brings an acceptance of the continuing balancing of scales that weigh changes inherent in the human condition.
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J P P
I think ergo I am agnostic and not conservative.
10:35 AM on 07/10/2011
Nicely articulated Imago1122. Thank you.
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Imago1122
Without a hurt, the heart is hollow...
01:43 PM on 07/10/2011
'Preciate it, J P P. Take care.
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senorlou
Why would anyone vote GOP?
10:15 PM on 07/08/2011
I've yo-yo 'd around on Zoloft.  The key is, never eat until you are full.  Only until you aren't hungry anymore, and if you're not hungry, don't eat.  I believe it's true the anti-depressants slow the metabolism down and you do feel lethargic.  Exercise with another person - they'll force you to do it when you don't want to.
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kellygrrrl
06:59 PM on 07/08/2011
I've never known anyone to gain more than 10 pounds from an antidepressant, and I've known several who have lost weight due to the increased energy level arising from the lifting of depression.
Anyone who is dealing with true depression should be in therapy, coupled with their medication, and work through any latent body image issues / OCD etc.

Compared to the effects of true depression / anxiety / OCD, a size or two up is a worthy tradeoff.
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senorlou
Why would anyone vote GOP?
10:16 PM on 07/08/2011
While I agree with you, it's better than depression, etc, I gained 60 lbs the first time I got on Zoloft.  This time I gained 25.
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Moriquenda M Moriquenda
07:30 AM on 07/09/2011
Just because you don't personally know anyone who has gained weight while on anti-depressants, doesn't mean that it doesn't happen. Anti-depressants--for most people--are simply masking agents or stop-gap measures. Therapy is the best long-term treatment approach. Anti-depressants are over-used in this society and the side-effects the drugs create can often be worse than the issue for which they were prescribed.
04:46 PM on 07/08/2011
This, unfortunately is only one side effect among many that antidepressants can produce. And, while this article focuses on the behavioral changes antidepressants cause that lead to weight gain, there are also other less easily detectable metabolic changes that can occur as well. There is some evidence that the use of these drugs can negatively affect thyroid functioning, typically slowing it down, which results in hypothyroidism. The irony here is that some people who are depressed actually have underative thyroids in the first place (and not clinical depression) which can can produce a similar slew of symptoms as depression. There are many other variables to look at and a host of pros and cons when it comes to these drugs. A thorough discussion would be almost interminable, but it's a good read nonetheless.

From someone who has suffered from anxiety and depression personally, I have found that medication is just one option out there. Meditation, cognitive behavioral therapy and daily positive self talk are all equally important and effective.

Changing your mindset as well as the way you look at past and present events is super important as well: http://mylifemybody.com/2011/06/how-to-feel-good/
10:26 AM on 07/12/2011
You touched on metabolic changes brought on by taking antidepressants. I would also like to add that some mood altering medications increase production of cortisol. When cortisol is increased it blocks thyroid hormone from being used properly. With these medications acting like a whip on the adrenal glands, overtime this action can 'tire out' the adrenal glands, thereby decreasing cortisol production, having a similar effect on thyroid hormones. Not enough cortisol is just as bad as too much.

One of cortisol’s more important functions is to act in concert or synergy with thyroid hormone at the receptor-gene level. Cortisol makes thyroid work more efficiently. A physiologic amount of cortisol—not too high and not too low—is very important for normal thyroid function, which is why a lot of people who have an imbalance in adrenal cortisol levels usually have thyroid-like symptoms but normal thyroid hormone levels.
07:34 PM on 07/14/2011
Thank you for these points about changes in metabolic rate and increased cortisol. The drugs I took for over 15 years did not cause me to over eat. The weight gain was swift and large. 50lbs in 3 months and another 50+ over time. All while I was very careful to eat healthily and exercise even when I didn't feel like it. Did I over eat sometimes? Certainly. But more often than not I ate normal portions of healthy food and exercised regularly. I've lost some of the weight but I may never be able to get back to my pre illness 140lbs or even close. Currently I walk about 3 miles to and from work each day, I eat healthy about 80% of the time and my work keeps me active most of the day. But I still weigh over 200 lbs. For the past 3 years I have used natural methods to curb my symptoms. Hopefully I will eventually regain a healthier body while maintaining a healthy mind. The psychiatric "profession" really needs to reconsider it's absolute reliance on drugs. And patients need to speak up more and demand respect.
03:39 PM on 07/08/2011
Notes from a psychiatrist: True, many people gain weight after starting antidepressant medication, but not everyone, and those who do may not necessarily gain so much as to make them very unhappy about it. A good psychiatrist will work with patients to minimize weight gain, which may include changing meds are trying alternative methods. Wellbutrin is much less likely to cause weight gain, but does not work for everyone, and has its own potential side effects (for some patients). Some of my patients have gained a little weight, even though they are NOT eating more and may be exercising regularly. Antidepressant medications do not work for EVERYONE, but there are some who will not get better unless they take medication. MANY people respond very well to medication, without marked side effects. FDA approved antidepressants DO work; they are not placebos. Some people with serious depression do get better without medication - with or without psychotherapy - but overall your odds of improving are increased with medication. Some people who have episodes of depression will do better with a mood stabilizer - such as lithium, lamotrigine, or valproate - rather than an antidepressant.
09:46 PM on 07/08/2011
Thank you for your input. I'd take the extra 10lbs over my past anxiety and depression problems any day.
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RhiannonRings
Childfree and loving it!
12:23 PM on 07/10/2011
Same here...
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Tree S-B
Well, you know...
11:48 AM on 07/08/2011
This is a powerful validation of my own experiences.
After swearing I would never take these drugs again, two months ago I began Zoloft to help with postpartum depression. It is now hopefully out of my system and I am making the time for exercise and meditation to help with my anxiety and depression. The drug caused weight gain and a dramatic change in my eating habits so that I would not eat healthy foods, just a constant stream of carbs and sugars.
While I do find the drug helps with my anxiety, I believe the poor eating habits, inability to exercise and weight gain only added to my depression.
11:38 AM on 07/08/2011
Serotonin boosting medications also frequently interfere with sleep, leading to imbalances in the appetite regulating hormones leptin and ghrelin and resulting in weight gain.
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fnygy
It seems my micro bio is empty. Hmmm...
10:06 AM on 07/08/2011
Anti-depressants don't really work, do they? Wasn't there a large study that showed they had no better track record than placebos? So... about treating the depression in other ways? Diet, exercise, cognitive behavioral therapy. Our health care system treats symptoms, not causes. It's expensive AND ineffectual. Crazy.
06:11 AM on 07/08/2011
This is why I stopped taking antidepressants years ago and got into fitness. I think antidepressants are a quick fix and they might help some people, but in the long term they do more harm than good. At least in my case.
For years I was hiding my bipolar disorder from my friends, it was a struggle to control it all the time and I felt completely trapped by taking antidepressants.

http://www.lovingfit.com/life/how-fitness-helped-me-to-alleviate-a-bipolar-disorder/
02:50 AM on 07/08/2011
A very, very sage article. America's obesity problem may in large part due to America's medical profession. One wonders, however, if the increased serotonin from carbs doesn't interfere with the effectiveness, such as it is, of the drugs.

Reading the consumer reviews of antidepressants is itself depressing. Patients embrace the newest prescription, joyously swearing that at last they've found something that works, only to find it failing a few months later. Patients who claim their antidepressants are doing nothing for them are urged to continue the treatment for miserable months before the medication is switched in hopes that the next version will work better. In fact, the actual success rate for antidepressant treatment is fairly low. There is nothing easy about the pharmaceutical treatment for depression.

Perhaps it is time to consider short-term talk therapy, particularly cognitive-behavioral approaches, as first line treatment for depression well before reaching for the prescription pad. Providing incentives and strategies to change depressing situations such as alcoholism, abusive marriages or horrible employment conditions would also be useful.
And yes, chocolate has its place (in moderation!).
12:59 AM on 07/08/2011
I also have to say that vigorous exercise cutting down on refined sugar ALONG with taking anti-depressants has been a grand help.
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emily tripp
Names have been changed to protect the innocent
11:55 PM on 07/10/2011
I was a former college athlete who continued to compete on the post-collegiate level into my mid- to late 20s. During that time I became increasingly interested in nutrition, to the point that I was considered the health-nut of the family. It was during this healthiest time of my life that depression creeped in. I've done quite a bit of therapy, and for 10 years I rejected the advice of therapists who suggested that I needed to be on medication. I ate well, I exercised a lot, I meditated, I did my "work." In my thirties I decided to give meds a try. Now at age fifty I have tried Zoloft, Wellbutrin, Paxel, Lexapro, Effexor, Lamictal,...My depression has only escalated over the years. To those who say that exercise and eating right work, I can only say: "Not for everybody." (Sorry, Iannetteramos, I didn't mean to direct this at you personally; I realize I hit the "reply" button, when I should've just started my own thread. Apologies, as I didn't intend to invalidate your experience.)
12:55 AM on 07/08/2011
Zoloft absolutely kills my appetite. No antidepressant has ever caused me to OVER-EAT. In fact, anti-depressants helped me discontinue stress-eating/ eating to mask depression. I will admit that the only time I EVER had an increase in appetite after taking an anti-depressant, was when my depressive symptoms included a loss of appetite--but then, I just resumed normal eating habits, instead of shunning food.