More on zinc and depression

In my last post, I described a study in which zinc was shown to enhance antidepressant activity. In this study, rats whose depression and anxiety-related behaviors had been successfully treated with antidepressants were then placed on a zinc-deficient diet.

What happened?

They started to act anxious and depressed again.

We live in a culture that has created the mentality that if you're not feeling well, you go to the doctor, she prescribes you a pill, you take the pill, and you feel all better.

Unfortunately, pills can only work some of the time. And they tend to work best when you're using them in conjunction with healthy self-care behaviors. As far as I know, and I am a voracious consumer of psychiatric and neurological research, there is no pill developed that will overcome what you choose not to do.

Medication, in most cases, should be considered an ADJUNCT to treatment, not the ONLY solution to a medical problem.

The whammy here is that when you're depressed, it can be challenging to feel like doing anything for yourself at all. If you're not up to "healthy living" but you ARE motivated to take your prescription medication...at least consider taking a zinc supplement alongside the prescription. They are easy to find and inexpensive.

And they just might be what determines whether you crawl out of that whole.....

...or feel hopelessly stuck there.

Whittle N, Lubec G, Singewald N. Zinc deficiency induces enhanced depression-like behaviour and altered limbic activation reversed by antidepressant treatment in mice. Amino Acids. 2009 Jan;36(1):147-58. Epub 2008 Oct 31.

A little red meat may help your depression

If you have depression, you are not depressed because there is a deficiency of antidepressants in your body...

...however...

...you may be depressed because you have some basic nutritional deficiencies. One mineral that is involved in numerous brain and nervous system functions, and that has been extensively studied with regards to its role in the development of depression, is zinc.

Various doses of zinc were recently shown to improve immobility time in rats. Immobility in a stressful situation is a common behavior in depression. (When you are not depressed, you have better decision making and response times when it comes to managing stressful situations.)

That's exactly what fluoxetine (Prozac), paroxetine (Paxil), imipramine (Tofranil), desipramine (Norpramin), and bupropion (Wellbutrin) do!

When zinc and antidepressants were administered together, immobility time was reduced by more than either therapy produced on its own.

Practically what that says is that:
(1) if you are at risk for, or have had a history of depression, emphasizing high-zinc dietary choices and/or zinc supplementation would be a smart strategy, and
(2) if you are on an antidepressant, supplementing with zinc would be important to be sure that you get enough medication to do the job without getting so much that you set yourself up for detrimental side effects.

In fact, it seems to me that it should be an automatic recommendation of any physician, when prescribing an antidepressant, to write "zinc supplement" in the script as well...

FYI, your best sources of zinc include: red meats, liver, and oyster. And, when the originating soil is in good condtion...wheat, sweet corn, lettuce, beans, nuts, almonds, whole grains, pumpkin seeds, sunflower seeds and blackcurrant. That's a lot of different options, something for practically everyone, meat eater or not!

Cunha MP, Machado DG, Bettio LE, Capra JC, Rodrigues AL. Interaction of zinc with antidepressants in the tail suspension test. Prog Neuropsychopharmacol Biol Psychiatry. 2008 Dec 12;32(8):1913-20. Epub 2008 Sep 11.

Zinc KO's Prozac in the fight against depression

Zinc is an essential mineral that can cause depression when it is deficient. In a recent study, scientists produced depression in a population of rats by creating a zinc deficiency. They went one step further and tried to reverse the depression with an antidepressant. Turns out, the rats did not respond to the medication.

Makes me wonder about another relationship. The fact that medical schools often give as little as one hour of nutrition to medical students in a four year curriculum. Could that be why, the first thing physicians think of when a patient is depressed, is to use the therapy on which semester-long courses are created, rather than to recommend something mentioned in passing in that long lost hour?

If you want to do something about your own zinc intake, remember that the highest levels of the best absorbed kind of zinc is found in protein-based choices such as beef, lamb, pork, crabmeat, turkey, chicken, lobster, clams and salmon. If you're vegan, your best bets are milk and cheese, yeast, peanuts, beans, and wholegrain cereals, brown rice, whole wheat bread, potato and yogurt.

Interestingly, pumpkin seeds are a great source of zinc. I keep running across pumpkin seeds for a lot of different pieces I'm writing these days. They just might be one of those foods you should never let yourself run out of. Trail mix, anyone?

Tassabehji NM, Corniola RS, Alshingiti A, Levenson CW. Zinc deficiency induces depression-like symptoms in adult rats. Physiol Behav. 2008 Oct 20;95(3):365-9. Epub 2008 Jul 3.

Zinc supplementation during lithium therapy

One of the most important things to understand about psychiatric disorders, is that they induce metabolic stress on the brain that can be significant enough to induce degeneration. An important treatment goal for any psychiatric disorder is to pursue balance and deter this process as much as possible.

Sometimes, as is the case with lithium, the treatment can be as deleterious as the disorder. In the process of stabilizing mood, lithium can also reduce the activity of several antioxidant enzymes. Antioxidants are chemicals that delay and prevent degeneration and aging. These enzymes promote chemical reactions that help to preserve brain tissue.

One very powerful tool that can slow down this process, is nutrition. Researchers in India were able to demonstrate that zinc supplementation given to rats who were also being given lithium, helped to restore antioxidant enzyme activity.

Zinc is required for many reactions occurring in the brain and nervous system so I'm not surprised at this. I also would venture to guess that other antioxidants would have been helpful as well. The message is not to load up on zinc, but to be sure that if you have bipolar disorder, that your nutritional choices include a wide variety of foods from all food groups. I'm always surprised at how little nutrition information is given to people for their psychiatric diagnoses. It's a powerful little strategy that can go such a long way!

Bhalla P, Chadha VD, Dhar R, Dhawan DK. Neuroprotective effects of zinc on antioxidant defense system in lithium treated rat brain. Indian J Exp Biol. 2007 Nov;45(11):954-8.