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Judith J. Wurtman, PhD

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Chocolate, Depression and PMS

Posted: 08/27/10 08:00 AM ET

A research team from San Diego reported recently that people who are depressed eat more chocolate than non-depressed individuals. Although this news might surprise men, any woman who has experienced premenstrual syndrome takes this for granted. PMS and chocolate cravings go together like peanut butter and jelly or fireworks and the 4th of July.

An editor of a woman's magazine told me years ago that she always knew when she was premenstrual because she was unable to walk by a gourmet chocolate shop next to her office without going in and buying a large chocolate bar. "The crankiness, fatigue, confusion and depression come later on," she told me. "The craving for chocolate is always there first. I remember once longing for a chocolate ice cream while sitting through a formal three-course dinner and after-dinner speaker. The food served at the meal did not tempt me at all but as soon as I could leave, I headed for the nearest ice cream shop. Sure enough, I was premenstrual."

The association between chocolate craving and premenstrual syndrome has been known for decades and theories promoted to explain this relationship tended toward the fanciful or bizarre: hysterical personality, malfunction of the reproductive organs or water on the brain. Moreover, because doctors noted that the women eating the chocolate were bad-tempered, depressed or confused, they concluded that the chocolate was making them that way. As recently as 10 to 15 years ago, chocolate-craving premenstrual women were told that eating chocolate, and indeed any sweet food, would make their moods worse and to eat only fruits, vegetables and lean protein. This advice can still be found in some women's health and fitness magazines. Not only is it wrong but any premenstrual women who follow it will gnash her teeth over being denied her chocolate.

There is a good reason why women with PMS go out in a blizzard to get chocolate or eat a dinner of melted chocolate on a chocolate brownie sitting on chocolate ice cream. The chocolate was making them feel better, not worse.

The improvement in mood is due to chocolate's substantial sugar content and, to a small extent, the caffeine-like ingredient is also contains. Because chocolate has a creamy texture, we are unaware of how much sugar it contains. But anybody who has accidentally mistaken baking chocolate for the eating kind knows the difference; baking chocolate is incredibly bitter. Sugar is a simple carbohydrate and when sugar of any carbohydrate, except that found in fruit, is eaten without protein, the body responds by making new serotonin in the brain. To be sure the flavor and mouth-feel of chocolate starts the eater on the road to a good mood. But the immediate sensations on the taste buds quickly disappear, whereas the relief from irritation, agitation and fatigue may last for a couple of hours.

Several years ago at the MIT clinical research center, we carried out some extremely complicated studies with premenstrual women to show scientifically that eating a brownie or even a bowl of starchy carbohydrate like cornflakes relieves the mood and eating disturbances of PMS. To begin with, we found that normal weight women may increase their calorie intake by more than 1100 calories a day when they are premenstrual compared to when they are in the first half of their menstrual cycle. And to no one's surprise, these calories came from sweet and starchy snacks and starchy meal food, and not from chicken, fish or cottage cheese. We also found the anger, confusion, depression, anxiety and cravings of PMS became more tolerable after women consumed a beverage containing a mixture of carbohydrates. When they drank a beverage containing protein, there was no improvement in how they felt. They did not know what they were drinking and the two beverages tasted exactly the same.

For reasons we still don't understand, hormonal changes associated with the menstrual cycle affect serotonin activity. This also may be true for women who are pre-menopausal. When our premenstrual volunteers ate carbohydrates, their brain cells made more serotonin and this chemical messenger brought the women back to feeling normal. An extra bonus was that they lost their intense cravings for carbohydrate so those who were trying to lose weight felt their appetite was under control.

Just to be sure that serotonin was the main actor in all this, we also carried out more studies with one of the antidepressant drugs that activated serotonin. We found that a short bout of treatment with the drug improved the moods of women who had severe PMS and this actually led to drug companies using some antidepressants for the extreme form of this disorder.

Obviously someone on a diet, or even not on a diet, cannot live on a meal plan consisting of chocolate Cheerios for breakfast, a chocolate bar between two slices of bread for dinner (they do eat this in Switzerland) and a bowl of hot fudge sauce for dinner when she has PMS.

But as long as portion control is monitored, fat is decreased as much as possible (for example, fat-free fudge sauce) and a vitamin pill is taken, no real nutritional harm will come from a once-a-month indulgence in this wonderful mood food. However, all carbohydrates except fructose (fruit sugar) will produce the same beneficial effect on premenstrual mood. If you find that your mood is bearable in the early part of the day but intolerable by afternoon eat your protein, vegetables and dairy products for breakfast and lunch and switch to carbohydrates from 3 pm on. This way your nutritional and emotional needs will be met. Rather than dreading PMS, think about chocolate and look forward to it.

Copyright 2010 Judith J. Wurtman, PhD, co-author of The Serotonin Power Diet: Eat Carbs -- Nature's Own Appetite Suppressant -- to Stop Emotional Overeating and Halt Antidepressant-Associated Weight Gain

 

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A research team from San Diego reported recently that people who are depressed eat more chocolate than non-depressed individuals. Although this news might surprise men, any woman who has experienced p...
A research team from San Diego reported recently that people who are depressed eat more chocolate than non-depressed individuals. Although this news might surprise men, any woman who has experienced p...
 
 
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12:03 AM on 09/03/2010
Chocolate cravings aren't just about getting sugar, which you could get from any type of candy or other sweets. It's been shown that those with chocolate cravings may show a need for magnesium, and this mineral is often recommended for women with mood problems and/or symptoms of PMS, who are often magnesium deficient. And the comment below about anandamide is also a good point - cannabinoids can be soothing to some people.
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jgarma
12:13 AM on 08/31/2010
It makes a lot of sense to eat chocolate if depressed, or simply looking to feel comforted. Decades ago, Candice Pert published ground breaking work on the molecules of emotion, meaning that our emotions have chemical (hormonal) underpinnings.

The right type of chocolate (high grade bittersweet) can spike dopamine levels in the brain as this article, "Make Love with Bittersweet Chocolate" explains:
http://www.garmaonhealth.com/2009/08/make-love-with-bittersweet-chocolate/
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11:14 AM on 08/30/2010
Apparently this writer has not heard of the endocannabinoid anandamide, found in the human brain and in chocolate.

Otherwise known as the bliss chemical, its presence in chocolate creates feelings of well being.
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kenhamlett
02:08 AM on 08/29/2010
It took a study by a research team to determine that depressed people eat more chocolate? I believe in scientific research and I am horrified by the abandonment of science and math studies in this country. But, really, I am a man, and chocolate relieves virtually any negative symptoms I have ever had. While undergoing chemotherapy for lymphoma, I lived in a chocolate box, and it helped everything but my waistline. I figured out that it would, even in the absence of a research team or study of my hormone levels or symptomology! Science is science and common sense is common sense!
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Mary Aspinwall
Homeopathy lover and health educator
03:40 PM on 08/28/2010
I'm not sure how helpful these disease labels, such as PMS, are. Although women may share some symptoms every one's experience of it will be unique to them. Any attempt to address it, rather than just suppress it, will come about by a deep understanding of each individual's underlying dis-ease. One woman may feel trapped and claustophobic, another might long for order and tidiness, another might feel isloated and abandoned. These feelings are probably already familiar, but heightened pre-menstrually. Homeopathy honors these differences and works to find the most perfectly matched remedy for each person. BTW there is even a homeopathic medicine made from fine Belgian chocolate and it turns out to be great for addictive personalities and those with hormonal disturbances!
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Mister Biggles
08:19 PM on 08/27/2010
PMS is a lie used to excuse selfish and immature behavior.

Biology has no effect on human behavior, we are not animals.

Women should learn to control themselves.

Does anyone agree with that? I'd guess no, since this is take two, but...

Then why do they agree that men's biological inclinations for variety are meaningless and mere excuses, etc.

How can you have it both ways?
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alieninvader
01:12 PM on 08/28/2010
There's a difference between being in a bad mood and infidelity.
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Mister Biggles
02:40 PM on 08/28/2010
They are two different things, yes.

Doesn't really address my point...
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janisa
04:56 PM on 08/28/2010
"Biology has no effect on human behavior, we are not animals."

wrong and wrong. that's a joke, right? no one could possibly believe that. but if you aren't jesting, i'm assuming you have no knowledge of the human body, including things like the endocrine system or psychiatric disorders. you may want to read up.
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11:21 AM on 08/30/2010
Just there to generate more gender squabble. And see? It worked!
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midwesthousewife
02:57 PM on 08/27/2010
I thought chocolate had some estrogen-like component in it. I noticed when I was peri-menopausal, I couldn't get enough chocolate. Made sense to me that as my own estrogen decreased, my desire for chocolate would increase, but maybe I was misinformed.
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Susan Orlins
Writer and author of blog Confessions of a Worrywa
12:41 PM on 08/27/2010
Excellent article! Although my PMS days are behind me, chocolate is part of my very best diet tip and is how I control my weight. Every day at around 5 or so (not too late b/c of the caffeine), I eat a bit less than an ounce of dark chocolate and a big handful of almonds and wash it down with a large glass of skim milk. This prevents me from over eating at dinner and satisfies my sweet tooth too. I no longer worry about my weight, but I worry about other things (with humor) and also give worry tips on my blog www.confessionsofaworrywart.com.
11:25 AM on 08/27/2010
I'm surprised zinc was not mentioned and wonder if a study has ever been made about how that mineral effects PMS. I mentioned chocolate cravings to my physician and was told about zinc however I have no desire to give up chocolate - that would be just plain silly!