Depressed? Then you are 3 times more likely to have choronary problems

You are ('probably' so they say)three times more likely to die from a heart attack if you are depressed than if you are not, for instance, and depression has a huge impact on diabetes as well, stated Coyle. Taking a step backward, clinical data also show that people who experience multiple stressful episodes in their lives tend to suffer from clinical depression. But there is tremendous variation: Some people are resistant to stress and others are not.

“It turns out that the pattern is correlated with a polymorphic variation in one particular gene, the gene for the transporter for serotonin, a transmitter which is known to be involved in regulating mood,” 

http://www.ncbi.nlm.nih.gov/books/NBK50991/

More on serotonin in Peter Cheevers book SAD Seasonal Affective Disorder PUBLISHED by Sheldon Press; he his short stories and journalism are
Read the short story on the benifits of light publlished by Ether Books                                                       To Self Help or not to self help