Although a challenging life event, such as the death of a loved one or financial hardship, can trigger depressive episodes, the causes of depression are complex and overlapping. There are two main categories of risks that can contribute to depression—those that you can't change, and those that you can.
Uncontrollable Risk Factors These variables are out of your control. Although you can't do anything to change them, it's important to know whether you fall into any of these higher-risk categories.
- Your family history. Depression appears to have a genetic component. You are more likely to experience depression if one of your parents also suffered from depression. If both parents had depression, your risk of developing it is twice as high.
- Your gender. Women are twice as likely to experience depression as men. Experts believe this is due to fluctuating hormone levels that women experience throughout life.
- Your age. While you may think that the risk of developing depression increases with age, that's not the always the case. In fact, studies show that the elderly are more likely to be happy and content with their lives than their younger counterparts. Depression can occur at any age (even in children), but it is most common in people between the ages of 24 and 44.
- Your health history. Chronic health conditions such as disability, heart disease, hypothyroidism, stroke, cancer, diabetes, multiple sclerosis (MS), and Parkinson’s disease can lead to depression. A history of depression also increases your risk for future episodes.
- Psychosocial factors. Depression is more common in people who have a history of trauma, abuse (sexual, physical or emotional), neglect, alcoholism, drug addiction, and insufficient family structure.
- Environmental factors. Chronic depression occurs more often in people who live in areas afflicted with war, natural disasters, and poverty. Seasonal depression is most common in high latitudes with extreme seasonal changes.
- Life changes. The loss of a loved one, conflicts with others, losing or starting a new job, the end of a relationship, retirement, moving to a new city and more—many life events can trigger depressive episodes.
While you can’t change things like family history or your environment, you can control certain factors related to your lifestyle—the choices you make each day about what to eat and how to care for yourself. These are areas of your life where you can take proactive steps to help prevent and treat depression and enhance your overall health.
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Member Comments
Having depression is different. Think back to the commercials you see on TV. Does it last more than two weeks? Does your life come to a halt because of this serious altered mood? Do you feel like a completely different version of yourself? These are signs that the lowered mood state is more serious and needs assistance.
To Jenn, if you're still reading this, there are breaking studies in the past few years that suggest the effects of PTSD can lessen to such a degree that they no longer impact the person's daily life. The difference between the PTSD of Vietnam and that of the Gulf Wars is the kind of care that's available today. Medication to treat the immediate effects makes space for talk-therapy (counseling) to be effective. While you used to need to be on medications permanently, they are finding that it may no longer be the case. However, if you do go on medications (and they do a wonderful job when the right one is found), do not go off them alone - do it with the advice and oversight of a trained medical professional.
Remember, if you need it, it's okay. No one would tell a diabetic to get it together and just start making insulin. No one would tell a cancer patient to fight it harder so those cells go away. They rely on a medical team to help them manage and work with what's going on. You can manage depression with help and live a very full life.
- 11/22/2011 9:04:32 AM
I have tried and tried to change my attitude, reduce my stress, eat better, exercise more, etc, etc, etc, but none of those things have provided the relief I seek. The Army doc told me that I'd be on medication 'til the day I die. I refuse to accept that and will continue to seek a coping mechanism that works for me without using drugs. We'll see how it goes... - 10/18/2011 2:49:22 PM
WebMD has useful information about the multiple causes as well.
http://www.webm
d.com/depress
ion/guide/cau
ses-depression
How Is Biology Related to Depression?
Researchers have noted differences in the brains of people who are depressed as compared to people who are not. For instance, the hippocampus, a small part of the brain that is vital to the storage of memories, appears to be smaller in people with a history of depression than in those who've never been depressed. A smaller hippocampus has fewer serotonin receptors. Serotonin is a calming brain chemical known as a neurotransmitter that allows communication between nerves in the brain and the body. It's also thought that the neurotransmitter norepinephrine may be involved in depression.
Scientists do not know why the hippocampus is smaller in those with depression. Some researchers have found that the stress hormone cortisol is produced in excess in depressed people. These investigators believe that cortisol has a toxic or poisonous effect on the hippocampus. Some experts theorize that depressed people are simply born with a smaller hippocampus and are therefore inclined to suffer from depression.
One thing is certain -- depression is a complex illness with many contributing factors. The latest scans and studies of brain chemistry that show the effects of antidepressants help broaden our understanding of the biochemical processes involved in depression. As scientists gain a better understanding of the cause(s) of depression, health professionals will be able to make better "tailored" diagnoses and, in turn, prescribe more effective treatment plans.
How Is Genetics Linked to the Risk of Depression?
We know that depression seems to run in families. This suggests that there's a genetic link to depression. Children, siblings, and parents of people with severe depression are much more likely to suffer from depression than are members of the general population. Multiple genes interacting with one another in special ways probably contribute to the variou... - 4/19/2011 9:44:02 AM
http://www.nimh
.nih.gov/heal
th/publicatio
ns/depression
/complete-index.shtml
"There is no single known cause of depression. Rather, it likely results from a combination of genetic, biochemical, environmental, and psychological factors.
"Research indicates that depressive illnesses are disorders of the brain. Brain-imaging technologies, such as magnetic resonance imaging (MRI), have shown that the brains of people who have depression look different than those of people without depression. The parts of the brain responsible for regulating mood, thinking, sleep, appetite and behavior appear to function abnormally. In addition, important neurotransmitters
–chemicals that brain cells use to communicate–appea
r to be out of balance. But these images do not reveal why the depression has occurred." - 3/9/2011 10:59:38 AM
- 4/24/2010 8:32:13 AM
org. Its a wonderful site that was started by Glenn Close. Her sister is bipolar (like me) and her newphew has schizophrenia. It is for anybody affected by such diseases. It is estimated that 1 in 4 families is impacted by somebody they know or love. It has super information, and perhaps can be helpful in some small way to you. I know its helpful to me to not feel alone in my struggles with bipolar and weight. - 12/31/2009 9:08:56 AM
Wishing you all good things......... - 12/31/2009 8:59:06 AM
Once I found out what was wrong with me, it was like the weight of the universe had been taken off my shoulders. There was actually a name for what I was feeling. I wasn't just an uncaring, unfeeling person after all. I could be FIXED!!
I have been treated off and on ever since that time. The last time I started taking meds (Effexor), my doctor at that time told me that I needed to stay on them so I didn't have a relapse along the way. Even with medication, there are some situations that one can't help but get depressed over. These are tough times for most people. Finances are being squeezed right and left. Having too much month at the end of the money is very hard to deal with, and it is almost impossible to keep from getting depressed over that situation!
I would advise anyone who shows signs of depression to see a doctor. There is no shame in admitting to being depressed. It doesn't mean that one is mentally ill. Best of all, there is help to be had. All one has to do is get checked out, and help will be there. What an encouragement it is just to know that! :-)) - 10/25/2008 9:04:36 PM