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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The Dana Foundation kindly sent us a copy of the great book Best of the Brain from Scientific American, a collection of 21 superb articles published previously in Scientific American magazine. A very nicely edited and illustrated book, this is a must for anyone who enjoys learning about the brain and speculating about what the future will bring us.

Some essays, like the ones by Eric Kandel (The New Science of Mind), Fred Gage (Brain, Repair Yourself), Carl Zimmer (The Neurobiology of the Self) and that by Steven Hollon, Michael Thase and John Markowitz (Treating Depression: Pills or Talk), are both intellectual feasts and very relevant to brain fitness. And finally starting to percolate into mainstream consciousness.

Let me quote some quotes and reflections as I was reading the book a couple of days ago, in the courtyard of a beautiful French cafe in Berkeley:

1)  On Brain Plasticity (the ability of the brain to rewire itself), Fred Gage says: “Within the past 5 years, however, neuroscientists have discovered that the brain does indeed change throughout life-…The new cells and connections that we and others have documented may provide the extra capacity the brain requires for the variety of challenges that individuals face throughout life. Such plasticity offers a possible mechanism through which the brain might be induced to repair itself after injury or disease. It might even open the prospect of enhancing an already healthy brain’s power to think and ability to feel”  

2)  and How Experience affects Brain Structure: Under the section title “A Brain Workout”, Fred Gage says “One of the mot striking aspects of neurogenesis (Note: the creation of new neurons) is that experience can regulate the rate of cell division, the survival of newborn neurons and their ability to integrate into the existing neural circuits…The best way to augment brain function might not involve drugs or cell implants but lifestyle changes.”

3) Biology of Mind: Eric Kandel provides a wonderful overview of the most Read the rest of this entry »

Well, today we have an exceptional collection of blog carnivals to mention. Please only start browsing if you do have some time to spare…otherwise you will end up spending more time reading the articles than you really can afford to

First, some superb editions of:

Grand Rounds (Medicine). An amazing collection of medicine-related articles, with fun guidance. You can also check the previous edition of this carnival, greatly presented, that we had forgotten to mention (no brain is perfect, if you mind to ask!). 

Encephalon (neuroscience and psychology)

Education Wonks (education, perhaps?)

Tangled Bank (general science)

A new edition of Brain Fitness (we launched this carnival in January and Talia hosted this edition; let us know if you want to host future ones).

And posts on a variety of topics:

Brain Blogging,   Video Game Bloggers,   Nursing,   Economics and Social Policy,   Entrepreneurs,   Family Life,   Teacher In Service,   Online Education,   Personal Development,   Online University,   ADD Blog,   Total Mind and Body Fitness,   Arsenal Of Goals & Plans,   Doing it Differently,   Observations on Life,   Brain Code,   Education and School Issues,   Depression and Mental health,   Special Needs,   Personal Growth.

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 »