We human beings are social animals. It seems intuitive (even for introverts!) that social contact has benefits. Obviously we need other people to fulfill basic needs such making sure that our genes outlive. Maybe less obviously we seem to need other people to maintain adequate levels of mental well being and motivation.

Even less obviously, social contact may help us improve our brain functions…

Mental fitness seems to depend on a large part on being connected with other people. For instance people with low social support seem to be more prone to mental illness (McGuire & Raleigh, 1986). In 2007, Gladstone and colleagues studied 218 patients with major depression and found out that low social support, especially coming from the family, was associated with chronic depression.

Merely imagining loneliness can negatively affect our behavior…

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Hi! It’s Andreas, the Norwegian MD/PhD intern at SharpBrains.

Last week Alvaro wrote about how people with low stress levels are better able to tolerate age-related changes in the brain. The other side of the coin, as mentioned today in the Wall Street Journal, is that chronic stress is a risk factor of dementia and might be related to harmful stress hormones called glucocorticoids.

So why do we have glucocorticoids? Well, they are steroids produced to help us manage short-term periods of stress. However, long-term release may erode pathways (connetions) between brain cells and can potentially accelerate cognitive decline.

Why is this relevant to all of us? Because depression can be seen as a chronic state of brain stress, and explain why stress management is important. Studies now show that depression may actually damage brain structures responsible for memory. The findings from a study in Archives of General Psychiatry showed patients with a history of depression are more likely to suffer from cognitive problems later in life, such as Alzheimer’s or dementia. As the journalist writes, “In findings that highlight the importance of mood and stress to maintaining a healthy brain, researchers and psychiatrists say that a bout of depression may raise the risks of developing dementia later in life.”

In some cases, patients with untreated depression exhibit an 10% volume reduction of the brain’s memory center Read the rest of this entry »