During this year, 2010, many people asked me about the relation between weather and emotions, so might a winter like the one we had this year in Spain, create a negative mood, or even increase the incidence of depression?
It’s obvious that in this country, even if cold winters are common in some areas, it’s unusual to have so many grey and dark days as the last winter. I’ve heard many people complaining and saying they need the sun, or that grey days makes them anxious. Maybe it’s true that most of us love sunny days and we associate rainy days with sadness. But the relation between weather and emotions, far away from subjective impressions, it’s still a topic for research.
The DSM-IV manual of diagnosis includes in the mood disorders the Seasonal Affective disorder, witch describes the appearance of depressive symptoms related with the beginning of autumn or winter. It’s held these symptoms to the lack of light, witch changes the function of the hormones responsible of the sleep-wake cycle, melatonin and serotonin. A lack of light increases the production of melatonin, that makes us feel more sleepy and tired, and also reduces the production of serotonin that makes us more energetic and active; these changes can settle the basis for a depression. But some cases of Seasonal Affective Disorder appear also at the beginning of the spring and even during the summer, so the causes are still not clear. But seems that the people affected should have a special sensibility to this lack of sun light, because even if the incidence of this disorder it’s higher in the northic areas, it’s not so high to let the scientist think that winter weather affects all the humans in the same way.
Some researches disproved a relation between weather and emotions, a recent investigation made in Germany by Japp Denissen, didn’t find a significant relation between these variables. In this research it was found a little relation between winter climate conditions, as rain or wind, and feelings of sadness or fatigue, but was so insignificant that didn’t let them take any conclusions about it, but they noticed that sunny days didn’t get better the mood of the people object of this study. Other researches, Watson 2000; Keller 2005, end up with similar conclusions and denied our mood depends so much on the weather. So probably, the weather doesn’t affect everybody in the same way, maybe we are facing with cultural influences, more than biological causes related with the lack of light.
Cultural factors are probably responsible of the sad mood many people felt last winter, how many times did we change our plans because of the bad weather, how many times a weekend passed staying at home, because nobody felt like going out in the rain.
Being active and do pleasant things creates a different state of mind, and maybe here in Spain we are not used to stay active, or do something we like with bad weather, and when the enjoyable things reduce, it’s probably that we will feel more sad.
So there’s still a lot to discuss about this topic to a good knowledge of our emotions, what I can tell it’s that our attitude towards the weather it’s more important than the weather conditions itself, some people love rainy days, some feel more relax, and some people suffer a lot with hot weather, at the end seems a matter of tastes. But even if we love sunny or rainy days, the truth it’s the weather it’s one of those things we cannot change; maybe if we try to accept it and enjoy our time, sunny or cold, our mood will be more positive.