So that could be a cause of mood change, such as more depression.
"As the months have worn on, there has been a lot more depression and a lot more suicidal ideation in the patients that I am seeing, " Barbe says.
These are all complex issues, yet wireless has proven to be more depression resistant than a lot of industries and it is still growing at a healthy rate.
"We have figures to show that poorer countries have actually more depression compared to richer countries and even poor people in rich countries have a high incidence of depression compared to the richer people in the same countries, " says Dr Saxena.
They have more stress, greater depression, and are more likely to have an external locus of control, which means that they believe that they are controlled by external events rather than vice-versa.
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That would make it more benign than the Great Depression of the 1930s but more severe than the Great Recession of the 1970s.
Having two or more episodes of depression nearly doubled the risk of dementia.
And it's becoming increasingly clear that the dopamine-rich areas of the brain are much more important in depression than previously thought.
Depression is common after a heart attack or stroke, and previous research has indicated that depression more than triples the risk of dying within the subsequent six months after a heart attack.
Many people also recognize that their moods and energies mutate with the seasons, with the most typical pattern being increased well-being and energy in spring and summer and more tiredness and depression during the gray days of winter.
But the story is a little more complicated than I've made it, because science has shown us that bad environments can affect a person so strongly that it changes the personal makeup in ways that will make the person more vulnerable to depression in the future.
The more vulnerable a person is by nature to depression, the more likely the seesaw is to become unbalanced, even when troubles in the environment are relatively small.
Women receiving normal care were significantly more likely to develop depression six months after childbirth.
At the beginning of the Depression, more than a fifth of U.S. jobs were in agriculture.
It showed that the more times someone experienced depression, the higher their dementia risk was.
For example, of 6 million Americans treated for depression, more than a million don't respond to drugs.
It wasn't long after that that his bouts with depression became more acute.
Investors were told in 1998 that the financial industry had become smarter and more sophisticated than its Depression-era predecessors.
The October 1929 stock exchange collapse did not cause the Depression any more than Black Monday did in 1987.
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The WHO points out that in the developing world nearly 95m people with depression and more than 25m with epilepsy receive no treatment or care.
Postpartum depression is more intense and intrusive: Women may lose interest in life, withdraw from family and friends, or think about harming themselves or their children.
Anxiety and panic are quite common when one has a bad depression, and they can be more miserable to endure than the feeling of depression itself.
Scientists believe glutamate is a much more direct target for depression than serotonin, a neurotransmitter affected by selective serotonin reuptake inhibitor (SSRI) drugs like Prozac and Paxil.
It may well be that raising taxes in the middle of what came to be called the great depression did more harm that raising reserve requirements, but so what?
Following the Great Depression, more than 6 million women joined the workforce, clocking in at shipyards, lumber mills and foundries, and their production helped us win the Great War.
In a study of 26 stockbrokers he conducted a decade ago, Mr. Cass found nearly one-quarter had clinical levels of depression, more than three times the rate among the general population.
But it has been known for a long time that people with no serious illness other than depression are more likely to die than those who are otherwise similar, but mentally healthy.
One had more severe dementia and depression.
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Study leader Dr Jeffrey Johnson said more research was needed to see if depression problems in teenagers were an early phase of major depressive disorder or if minor depression earlier in life contributed to the development of more serious problems later on.
The researchers found that the more relatives a person had with major depression, anxiety disorder, or alcohol or drug dependence, the more likely he or she was to have that condition too.
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